CN115961199A - High-strength, high-toughness and high-wear-resistance titanium-based high-manganese steel bonded ceramic alloy and preparation method thereof - Google Patents
High-strength, high-toughness and high-wear-resistance titanium-based high-manganese steel bonded ceramic alloy and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a high-toughness and high-wear-resistance titanium-based high-manganese steel bonded ceramic alloy and a preparation method thereof, relates to the technical field of metal ceramic materials, and solves the problems that the wear rate of the material is greatly accelerated due to fracture damage and low hardness caused by insufficient toughness when the impact of the conventional high-manganese steel bonded hard alloy is high, and the high-toughness and high-wear-resistance titanium-based high-manganese steel bonded ceramic alloy comprises hard phase powder: tiC; strengthening phase powder: WC; tiN; ti (C, N); binder phase powder: ni, co, fe, mn-Fe, mo-Fe, cr-Fe, si-Fe; interface strengthening powder: reNi; carbon black micropowder; the TiC high manganese steel composite material is a composite material formed by powder metallurgy combination between ceramic TiC and alloy components for preparing high manganese steel, and the hardness, the wear resistance, the strength and the toughness of the material are between those of the traditional hard alloy and high-speed steel, so that the blank between the hard alloy and steel is effectively filled.
Description
Technical Field
The invention relates to the technical field of metal ceramic materials, in particular to the technical field of high-strength, high-toughness and high-wear-resistance titanium-based high-manganese steel bonded ceramic alloy.
Background
In recent years, the industries such as mines, metallurgy, cement and the like are developed in large scale, and in the industrial fields such as building materials, thermal power generation, metallurgical mines, equipment manufacturing and the like, the direct economic loss of products due to product failure caused by abrasion at home and abroad reaches hundreds of billions or even more than billions of yuan RMB, wherein, the abrasion-resistant materials of millions of tons of metals are abraded every year by only consuming abrasives, and the abrasion-resistant materials are still increased by 15 percent every year at present. According to the incomplete statistics of the industries such as metallurgy, coal, electric power and the like in China, the operation environment is metal parts of media such as silt, dust, ore and the like, metal abrasion is one of the main reasons for failure of mechanical parts, the loss is quite remarkable, the weight of abraded metal materials is more than three million tons every year, and the loss is up to billions of yuan RMB. The data show that nearly one third of the world's primary energy is lost due to wear. In order to prevent the occurrence of fracture failure, causing shutdown or safety accidents, high manganese steel with excellent toughness is usually adopted for manufacturing, but due to insufficient strength of the high manganese steel, the high manganese steel is plastically deformed in the using process, so that a mounting bolt can be sheared and fly out under the action of deformation stress, and great potential safety hazards are caused. The research and development of novel materials with high wear resistance, high temperature resistance, corrosion resistance, fatigue resistance and the like is an important task to be solved, and has important economic significance and social significance.
The steel bonded hard alloy is developed successfully in the 60 th century by the American chrome company at the earliest and put into industrial production, and then a plurality of industrial countries are involved in the field, wherein hard phase is mainly indissolvable metal carbide (mainly WC, tiC and the like), and the steel is used as a bonding phase, and high-life die materials and engineering materials between the hard alloy and alloy tool steel, die steel and high-speed steel are produced by using a powder metallurgy method. The hard phase of the steel bonded hard alloy generally accounts for 30-50% of the total mass of the alloy, and the rest is a steel matrix.
At present, the components and the performances of the alloy are still TM60 and TM52 which are expressed in the book of Steel bonded hard alloy in China. Although having sufficient strength and work hardening effect, the hardness is still significantly lower, e.g. TM52 has only HRC 45-58 hardness, and under some conditions the wear resistance is not sufficient, so that the engineer has to choose expensive WC — Co cemented carbide. The high manganese steel has the characteristic of 'soft-gram steel' and becomes the key of an important wear-resistant material, but the high manganese steel has low hardness, and the surface layer of the high manganese steel can be quickly hardened through deformation under the action of strong impact or large pressure stress, so that the high-hardness and high-wear-resistant surface layer is generated. The special performance of the high manganese steel enables the high manganese steel to be widely applied to various mechanical equipment for a long time, such as crusher hammers, excavator bucket teeth, railway turnouts and the like. However, as the industrial conditions become more complex, the drawbacks of wear-resistant manganese steels become increasingly exposed. For example, under low-impact service conditions such as a lining plate of a crusher, a rolling mortar wall and the like, the wear resistance of high manganese steel is reduced, so that the service life is short, and the requirements of high-end crushing and grinding equipment cannot be met. Although the existing TiC high manganese steel bonded hard alloy such as TM52 and TM60 can play a certain role in enhancing toughness and impact resistance, the existing TiC high manganese steel bonded hard alloy still has the technical problems that the strength and toughness are insufficient under high impact, the wear resistance is not high due to low hardness, and the TM52 steel bonded hard alloy is easy to deform or break and the like, so that the actual structure and the mechanical property of the internal high manganese steel can be further influenced. In recent years, steel bonded cemented carbide prepared by in-situ synthesis has been developed at home and abroad, but the reinforced particles are limited to thermodynamically stable particles in a specific matrix; the generated phase is complex and difficult to control; the particle size and shape are controlled by the dynamics of nucleation and growth processes, and after in-situ particles are formed, the particles are usually segregated in dendritic crystal gaps or crystal grain boundaries in the casting process, which has adverse effects on material structure and performance, and the manufacturability is poor, the preparation cost is higher than that of the existing process, and the method is not suitable for large-scale production.
Disclosure of Invention
The invention aims to: the invention provides a high-toughness high-wear-resistant titanium-based high-manganese steel bonded ceramic alloy and a preparation method thereof, aiming at solving the problem that the wear rate of a material is greatly accelerated due to fracture breakage and low hardness caused by insufficient toughness when the impact of the conventional high-manganese steel bonded hard alloy is high. The high-strength, high-toughness and high-wear-resistance titanium-based steel bonded metal ceramic alloy developed by the invention can effectively prevent sudden failure modes such as fracture, cracking, short service life and the like, can keep enough rigidity, prevents excessive deformation of materials, has excellent wear resistance, and has extremely important engineering application value. The TiC high manganese steel composite material is a composite material formed by powder metallurgy between ceramic TiC and metal high manganese steel components, and the hardness, the wear resistance, the strength and the toughness of the material are between those of the traditional hard alloy and high-speed steel, so that the blank between the hard alloy and steel is effectively filled.
The invention specifically adopts the following technical scheme for realizing the purpose:
a high-strength, high-toughness and high-wear-resistance titanium-based high-manganese steel bonded ceramic alloy comprises the following components in percentage by mass:
hard phase powder: 35 to 85 percent of TiC, and the particle size of the powder FSSS is 2.5 to 6.0 microns;
strengthening phase powder: 1.5 to 10 percent of WC, and the particle size of FSSS powder is not more than 12.0 microns;
0-5% of TiN, the FSSS particle size of the powder is not more than 3.5 microns;
0-5% Ti (C, N), powder FSSS particle size not greater than 3.5 micron;
binder phase powder: 0-5% of Ni, and the FSSS particle size of the powder is not more than 3.0 microns;
0-5% of Co, and the FSSS particle size of the powder is not more than 3.0 microns;
0-25% of Fe, and the FSSS particle size of the powder is not more than 100.0 microns;
10-30% of Mn-Fe, and the FSSS particle size of the powder is not more than 100.0 microns;
0-20% of Mo-Fe, and the FSSS particle size of the powder is not more than 100.0 microns;
0-20% of Cr-Fe, and the particle size of FSSS powder is not more than 100.0 microns;
0-5% Si-Fe, the FSSS particle size of the powder is not more than 100.0 micron;
interface strengthening powder: 0-5% ReNi, the FSSS particle size of the powder is not more than 3.0 microns;
0-1.5% carbon black micron powder;
the Fe powder is carbonyl iron powder or reduced iron powder; the mass percent of Mn accounting for Mn-Fe is 45-85%, the mass percent of Mo accounting for Mo-Fe is 40-80%, and the mass percent of Cr accounting for Cr-Fe is 50-80%; the mass percentage of Si in Si-Fe is 50-80%; re accounts for 5 to 15 percent of ReNi in percentage by mass.
Preferably, the titanium-based high manganese steel bonded ceramic alloy with high strength, toughness and wear resistance comprises the following components in percentage by mass:
hard phase powder: 35 to 82 percent of TiC, and the particle size of the powder FSSS is 2.5 to 6.0 microns;
strengthening phase powder: 1.5 to 10 percent of WC, and the FSSS particle size of the powder is not more than 12.0 microns;
1-5% of TiN, the FSSS particle size of the powder is not more than 3.5 microns;
0-5% Ti (C, N), powder FSSS particle size not greater than 3.5 micron;
binder phase powder: 1-5% of Ni, and the FSSS particle size of the powder is not more than 3.0 microns;
1-5% of Co, and the particle size of the powder FSSS is not more than 3.0 microns;
5-25% of Fe, and the particle size of the powder FSSS is not more than 100.0 microns;
10-25% of Mn-Fe, and the particle size of FSSS powder is not more than 100.0 microns;
2.5 to 20 percent of Mo-Fe, and the particle size of the FSSS powder is not more than 100.0 microns;
0-10% of Cr-Fe, and the FSSS particle size of the powder is not more than 100.0 microns;
0.20 to 3 percent of Si-Fe, and the grain size of the FSSS powder is not more than 100.0 microns;
interface strengthening powder: 0.1-5% ReNi, the FSSS particle size of the powder is not more than 3.0 microns;
0.5 to 1.5 percent of carbon black micron powder.
More preferably, the titanium-based high manganese steel bonded ceramic alloy with high strength, toughness and wear resistance comprises the following components in percentage by weight:
hard phase powder: 40 to 70 percent of TiC, and the particle size of the powder FSSS is 2.5 to 4.5 microns;
strengthening phase powder: 2.5 to 8 percent of WC, and the grain size of FSSS powder is 2.5 to 10.0 microns;
1-2.5% of TiN, the particle size of the powder FSSS is 1.0-2.5 microns;
1-2.5% Ti (C, N), powder FSSS particle size 1.0-2.5 micron;
binder phase powder: 1.5 to 3.5 percent of Ni, and the particle size of FSSS powder is 1.5 to 3.5 microns;
1-3% Co, powder FSSS granularity 1.5-3.0 micron;
5-15% Fe, powder FSSS particle size of 45.0-75.0 micron,
15-25% Mn-Fe, powder FSSS particle size 45.0-75.0 μm,
2.5 to 10 percent of Mo-Fe, the FSSS particle size of the powder is 45.0 to 75.0 microns,
2-8% of Cr-Fe, and the particle size of FSSS powder is 45.0-75.0 microns;
0.25-2.0% Si-Fe, powder FSSS particle size 45.0-75.0 micron;
interface strengthening powder: 0.5 to 2 percent of ReNi, and the particle size of FSSS powder is not more than 3.0 microns;
0.5 to 1.0 percent of carbon black powder.
The preparation method of the high-strength, high-toughness and high-wear-resistance titanium-based high-manganese steel bonded ceramic alloy comprises the following steps:
step 1, weighing raw material powder according to the weight percentage, mixing the raw material powder (namely the total amount of the mixture), adding a dispersing agent and a forming agent, and uniformly mixing to obtain a prepared raw material;
step 4, directly filling the sieved mixed material or the dried granulated powder into a die to be pressed into a blank;
and 5, loading the compression-molded blank into a sintering furnace, sequentially entering a heating degreasing stage, a solid-phase sintering stage and a liquid-phase sintering stage, entering a furnace cooling stage after the liquid-phase sintering is finished, and taking out the high-strength, high-toughness and high-wear-resistance light titanium-based steel bonded metal ceramic alloy from the furnace.
Further, in the step 1, the dispersant is dodecyl benzene sulfonic acid, stearic acid or ethofenamine, and the mass fraction of the dispersant in the total amount of the mixture is 0.1-0.5%; the forming agent is any one of rubber, paraffin or PEG, the mass fraction of the forming agent in the total amount of the mixture is 2.5-5%, the solvent comprises gasoline, ethylene glycol or hexane, and the volume mass ratio of the solvent to the total amount of the mixture is 280-400ml.
Further, the ball mill in the step 2 is a rolling ball mill, the diameter of the hard alloy ball is 6.25-10 mm, and the ball-material ratio is 2.5-5: l; the ball milling rotating speed of the ball mill is 70-80 r/min, and the ball milling time is 16-48 h.
Furthermore, the pressure intensity of the pressing in the step 4 is 150-200 Mpa, and the pressure maintaining time is 5-120 s.
Further, the heating and degreasing stage is carried out according to the working procedures of preheating, vacuumizing, heating and heat preservation, wherein the preheating is carried out to 80-100 ℃, the heat preservation is carried out for 30-60min, the vacuumizing is carried out to below 10Pa, the heating is carried out to 380-450 ℃, the heating speed is not more than 5 ℃/min, and the heat preservation is carried out for 50-120 min at 380-450 ℃.
Furthermore, the heating temperature in the solid phase sintering stage is increased from 380-450 ℃ to 1200-1250 ℃, the heating rate is not more than 10 ℃/min, the temperature is kept for 30-60min when the sintering temperature reaches 900-1120 ℃, and the temperature is kept for 30-60min when the sintering temperature reaches 1200-1250 ℃.
Further, when the solid phase sintering stage is finished and the liquid phase sintering stage is started, the temperature is increased to 1340-1480 ℃ at the heating rate of 2-5 ℃/min, the heat preservation time of the liquid phase sintering stage is 45-90 min, and meanwhile, 1-5 MPa of argon gas is introduced, wherein the purity of the argon gas is more than 99.995%.
The invention has the following beneficial effects:
1. according to the invention, high-hardness TiC particles and multi-element powder for generating a high-manganese steel bonding matrix are mixed to prepare the high-toughness high-wear-resistance titanium-based high-manganese steel bonding ceramic alloy, the bonding property of a hard phase and a bonding phase interface is better, the impact toughness is better, tiC and WC can effectively strengthen the formed high-manganese steel bonding phase-based composite material, and W element can be used for solid solution and strengthening the bonding phase, so that the hardness of the material is improved, and the wear resistance of the material is improved. TiCN and TiN are used to refine TiC grains, improve toughness and increase hardness of hard particles. The higher carbon content can improve the hardness, strength and wear resistance of the steel, but too high carbon content can reduce the toughness and increase the cracking tendency, so the carbon content is most suitable in the range of 1.15-1.25%; fe-Mn alloy powder is added into a binding phase, and when the carbon content in steel is constant, the microstructure of the binding phase is gradually changed from a pearlite type to a martensite type and finally to an austenite type along with the increase of the manganese content. Manganese element is dissolved in austenite in a solid solution to cause solid solution strengthening, thereby promoting the growth of austenite and improving the stability of austenite. The manganese-carbon ratio (Mn/C) is controlled to be 8-10, and the silicon element is added in the iron-silicon alloy powder mode to improve the wear resistance of the material under the strong impact condition; chromium is added into the iron-chromium powder to form a continuous solid solution, and the yield strength of the alloy matrix is improved after the continuous solid solution is dissolved in austenite so as to ensure that excellent comprehensive performance is obtained; re element added in the ReNi powder mode can block the growth of crystal grains and the formation and development of grain boundary cracks, and effectively weaken the growth of dendritic crystals, thereby obviously improving the toughness of steel, improving the work hardening capacity and obviously improving the wear resistance of high manganese steel.
2. Compared with steel bonded hard alloy adopting WC as a hard phase, the TiC-based steel bonded hard alloy has obvious advantages, in cost, ti is more abundant than W resource, and TiC powder is simple in preparation process, so that the overall price is low and the cost is low; from the product performance, the density of TiC is low and is 4.8-6.5 g/cm3, and the density of WC is 14.9-15.4 g/cm 3 Only about 1/3-1/2 of the alloy, the hardness of the TiC-based steel cemented hard alloy prepared by the TiC-based steel cemented hard alloy is obviously higher than that of the WC-based steel cemented hard alloy, the thermal stability is better, and the high-temperature oxidation resistance is good, so that the TiC-based steel cemented hard alloy has good high-temperature oxidation resistance for carrying vehicles and navigation vehiclesThe air vehicle and the wear-resistant part running at high speed have unique advantages;
3. the method adopts the steel powder as the binding phase in the preparation process, has 50-100 ℃ lower sintering temperature than that of the hard alloy, small tendency of grain growth, high plastic deformation capacity under high temperature condition and excellent service performance, and can carry out various mechanical processing, heat treatment, forging and welding according to requirements in the subsequent processability, thereby obtaining the service performance such as strength, hardness, toughness and the like required by the tool and die material, greatly improving the wear resistance of the die, playing an important role as a wear-resistant part in the fields of machinery, mining and metallurgy, construction, military, aerospace and the like, and being widely applied to the fields of dies and cutting tools, such as manufacturing cutting tools, rock drilling tools, digging tools, drilling tools, measuring tools, wear-resistant parts, metal grinding tools, cylinder liners, precision bearings, rocket nozzles and hardware dies.
4. The method of the invention is seen from processed products, the TiC high manganese steel composite material can be deeply processed by adopting a more common cast-in process and a build-up welding process, such as a large crusher hammer head and an engineering drill bit, and TiC high manganese steel bonded hard alloy is cast-in on a working surface of a wear-resistant component and a small piece of TiC high manganese steel bonded hard alloy is welded on a steel component, so that the application in the material industry and the mining industry is realized, and the replacement is convenient, such as: gear teeth on a crusher, rollers on a rolling mill, a fuel pump rotor and blades of a jet engine, a gas bearing in a manned spacecraft navigation system, and the like;
5. the high-strength, high-toughness and high-wear-resistance titanium-based high-manganese steel bonded ceramic alloy prepared by the invention has excellent physical and mechanical properties such as low density, high hardness, wear resistance and the like, is simple and convenient in preparation process, convenient to operate, strong in sintering period controllability and low in process cost, can be widely applied to industrial production, has extremely high cost performance, can provide a good initial structure state and an excellent comprehensive performance matrix for widely applied tool and die materials, effectively fills the blank between hard alloy and steel, can greatly save the use of noble metals such as W, co, ta and other strategic alloy elements, and effectively reduces the production cost of the alloy.
Drawings
FIG. 1 is a scanning electron micrograph of an alloy of example 1 of the present invention at a magnification of 500.
FIG. 2 is a scanning electron micrograph of an alloy of example 1 of the present invention magnified 1000 times.
FIG. 3 is a scanning electron micrograph of an alloy of example 2 of the present invention magnified 1000 times.
FIG. 4 is a scanning electron micrograph of an alloy of example 3 of the present invention magnified 1000 times.
FIG. 5 is a scanning electron micrograph of an alloy of example 4 of the present invention magnified 500 times.
FIG. 6 is a scanning electron micrograph of an alloy of example 4 of the present invention magnified 1000 times.
FIG. 7 is a scanning electron micrograph of an alloy of example 5 of the present invention magnified 1000 times.
FIG. 8 is a scanning electron micrograph of an alloy of example 6 of the present invention magnified 500 times.
FIG. 9 is a scanning electron micrograph of an alloy of example 6 of the present invention magnified 1000 times.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments.
Therefore, based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.
Example 1
As shown in fig. 1 to 2, this embodiment provides a high-toughness high-wear-resistance titanium-based high-manganese steel bonded ceramic alloy, which comprises the following components by mass percent: 54% TiC, powder particle size FSSS of 3 microns, 3% wc, powder particle size FSSS of 8 microns, 2.5% TiN, powder particle size FSSS of 2 microns, 2.5% Ni, powder particle size FSSS of 1.5 microns, 2% Co, powder particle size FSSS of 1.5 microns, 10% Fe, powder particle size FSSS of 75 microns, 10% Mn-Fe, powder particle size FSSS of 80 microns, 9% Mo-Fe, powder particle size FSSS of 70 microns, 1% Cr-Fe, powder particle size FSSS of 90 microns, 2% Si-Fe, powder FSSS of 85 microns, 3% ReNi, powder particle size FSSS of 2 microns, 1% carbon black micron powder.
The Fe powder is carbonyl iron powder or reduced iron powder; the mass percent of Mn accounting for Mn-Fe is 80%; mo accounts for 40 percent of the Mo-Fe by mass; the mass percent of Cr in Cr-Fe is 50%; the mass percent of Si in Si-Fe is 50%; the mass percent of Re in ReNi is 5%.
The preparation method of the titanium-based high manganese steel bonded ceramic alloy with high strength, toughness and wear resistance comprises the following steps:
step 1, weighing and mixing the raw material powder according to the weight percentage, adding a dispersing agent and a forming agent, and uniformly mixing to obtain a prepared raw material; the dispersant is dodecyl benzene sulfonic acid which accounts for 0.2 percent of the total mass of the mixture; the forming agent is paraffin, and accounts for 3% of the total mass of the mixture;
step 4, directly filling the sieved mixed material or the dried granulated powder into a die to be pressed into a blank, wherein the pressing pressure is 180Mpa, and the pressure maintaining time is 60s;
step 5, loading the compression-molded blank into a sintering furnace, sequentially entering a heating degreasing stage, a solid-phase sintering stage and a liquid-phase sintering stage, entering a furnace cooling stage after the liquid-phase sintering is finished, taking out the high-strength, high-toughness and high-wear-resistance light titanium-based steel bonded metal ceramic alloy from the furnace, wherein the heating degreasing stage is carried out according to the procedures of preheating, vacuumizing, heating and heat preservation, preheating to 90 ℃, preserving heat for 40min, vacuumizing to below 8Pa, heating to 400 ℃, heating at a speed of not more than 5 ℃/min, and preserving heat for 80min at 400 ℃; in the solid phase sintering stage, the heating temperature is increased from 400 ℃ to 1250 ℃, the heating rate is not more than 5 ℃/min, the heat is preserved for 30min when the sintering temperature reaches 1120 ℃, and the heat is preserved for 30min when the sintering temperature reaches 1250 ℃; and when the solid phase sintering stage is finished and the liquid phase sintering stage is started, the temperature is increased to 1420 ℃ at the temperature rise rate of 2.5 ℃/min, the heat preservation time of the liquid phase sintering stage is 60min, and meanwhile 4MPa of argon gas is introduced, wherein the purity of the argon gas is more than 99.995%.
Example 2
As shown in fig. 3, this embodiment provides a high-toughness and high-wear-resistance titanium-based high-manganese steel bonded ceramic alloy, which comprises the following components in percentage by mass: 56% TiC, powder particle size FSSS of 2.5 microns, 3% WC, powder particle size FSSS of 3 microns, 1% Ti (C, N), powder particle size FSSS of 1.5 microns, 1.5% Ni, powder particle size FSSS of 1.5 microns, 1.5% Co, powder particle size FSSS of 1.5 microns, 6% Fe, powder particle size FSSS of 50 microns, 25% Mn-Fe, powder particle size FSSS of 60 microns, 2% Mo-Fe, powder particle size FSSS of 65 microns, 1% Cr-Fe, powder particle size FSSS of 60 microns, 1% Si-Fe, powder FSSS particle size of 55 microns, 1% ReNi, powder particle size FSSS of 1.5 microns, 1% carbon black micron powder.
The Fe powder is carbonyl iron powder or reduced iron powder; the mass percent of Mn accounting for Mn-Fe is 45%; mo accounts for 50 percent of the Mo-Fe by mass; the Cr accounts for 80 percent of the Cr-Fe by mass; the mass percent of Si in Si-Fe is 80%; the mass percent of Re in ReNi is 15%.
The preparation method of the titanium-based high manganese steel bonded ceramic alloy with high strength, toughness and wear resistance comprises the following steps:
step 1, weighing and mixing the raw material powder according to the weight percentage, adding a dispersing agent and a forming agent, and uniformly mixing to obtain a prepared raw material; the dispersant is dodecyl benzene sulfonic acid, and the mass fraction of the dispersant in the total amount of the mixture is 0.1%; the forming agent is paraffin, and accounts for 2.5 percent of the total mass of the mixture;
step 4, directly filling the sieved mixed material or the dried granulated powder into a die to be pressed into a blank, wherein the pressing pressure is 150Mpa, and the pressure maintaining time is 120s;
step 5, loading the compression-molded blank into a sintering furnace, sequentially entering a heating degreasing stage, a solid-phase sintering stage and a liquid-phase sintering stage, entering a furnace cooling stage after the liquid-phase sintering is finished, taking out the high-strength, high-toughness and high-wear-resistance light titanium-based steel bonded metal ceramic alloy from the furnace, wherein the heating degreasing stage is carried out according to the procedures of preheating, vacuumizing, heating and heat preservation, preheating to 80 ℃, preserving heat for 50min, vacuumizing to below 7Pa, heating to 380 ℃, heating at a speed of not more than 5 ℃/min, and preserving heat for 120min at 380 ℃; in the solid phase sintering stage, the heating temperature is increased from 380 ℃ to 1200 ℃, the heating rate is not more than 8 ℃/min, the heat is preserved for 60min when the sintering temperature reaches 900 ℃, and the heat is preserved for 60min when the sintering temperature reaches 1200 ℃; and when the solid phase sintering stage is finished and the liquid phase sintering stage is started, the temperature is increased to 1340 ℃ at the heating rate of 2 ℃/min, the heat preservation time of the liquid phase sintering stage is 90min, and meanwhile, 1MPa of argon gas is introduced, wherein the purity of the argon gas is more than 99.995%.
In FIG. 3, 1 is a TiC hard phase, 2 is a binder phase formed by the components of the high manganese steel group, and 3 is a strengthening phase.
Example 3
As shown in fig. 4, this embodiment provides a high-toughness and high-wear-resistance titanium-based high-manganese steel bonded ceramic alloy, which comprises the following components in percentage by mass: 65% TiC, powder particle size FSSS 4.5 microns, 4% WC, powder particle size FSSS 6 microns, 2% TiN, powder particle size FSSS 2 microns, 1% Ni, powder particle size FSSS 2.5 microns, 1% Co, powder particle size FSSS 2.5 microns, 6% Fe, powder particle size FSSS 65 microns, 13.5% Mn-Fe, powder particle size FSSS 70 microns, 5% Mo-Fe, powder particle size FSSS 70 microns, 0.5% Si-Fe, powder FSSS particle size 65 microns, 1% ReNi, powder particle size FSSS 2 microns, 1% carbon black micron powder.
The Fe powder is carbonyl iron powder or reduced iron powder; mn accounts for 70 percent of the Mn-Fe by mass; the Mo accounts for 80 percent of the Mo-Fe by mass; the mass percent of Cr in Cr-Fe is 70%; the mass percent of Si in Si-Fe is 60%; the mass percent of Re accounting for ReNi is 10 percent.
The preparation method of the titanium-based high manganese steel bonded ceramic alloy with high strength, toughness and wear resistance comprises the following steps:
step 1, weighing and mixing the raw material powder according to the weight percentage, adding a dispersing agent and a forming agent, and uniformly mixing to obtain a prepared raw material; the dispersant is dodecyl benzene sulfonic acid, and the mass fraction of the dispersant in the total amount of the mixture is 0.3%; the forming agent is paraffin, and accounts for 3.5 percent of the total mass of the mixture;
step 4, directly filling the sieved mixed material or the dried granulated powder into a die to be pressed into a blank, wherein the pressing pressure is 160Mpa, and the pressure maintaining time is 100s;
step 5, loading the compression-molded blank into a sintering furnace, sequentially entering a heating degreasing stage, a solid-phase sintering stage and a liquid-phase sintering stage, entering a furnace cooling stage after the liquid-phase sintering is finished, taking out the high-strength, high-toughness and high-wear-resistance light titanium-based steel bonded metal ceramic alloy from the furnace, wherein the heating degreasing stage is carried out according to the procedures of preheating, vacuumizing, heating and heat preservation, preheating to 85 ℃, preserving heat for 45min, vacuumizing to below 6Pa, heating to 400 ℃, heating speed not more than 5 ℃/min, and preserving heat for 100min at 400 ℃; in the solid phase sintering stage, the heating temperature is increased from 400 ℃ to 1220 ℃, the heating rate is not more than 8 ℃/min, the heat is preserved for 50min when the sintering temperature reaches 950 ℃, and the heat is preserved for 50min when the sintering temperature reaches 1220 ℃; and when the solid-phase sintering stage is finished and the liquid-phase sintering stage is started, the temperature is increased to 1380 ℃ at the heating rate of 3 ℃/min, the heat preservation time of the liquid-phase sintering stage is 70min, and 3MPa of argon gas is introduced, wherein the purity of the argon gas is more than 99.995%.
Example 4
As shown in fig. 5 to 6, this embodiment provides a high-toughness high-wear-resistance titanium-based high-manganese steel bonded ceramic alloy, which comprises the following components by mass percent: 40% TiC, powder particle size FSSS of 4 microns, 8% wc, powder particle size FSSS of 10 microns, 4% Ti (C, N), powder particle size FSSS of 2.5 microns, 3% ni, powder particle size FSSS of 2 microns, 4% Co, powder particle size FSSS of 3 microns, 12% Fe, powder particle size FSSS of 50 microns, 14% Mn-Fe, powder particle size FSSS of 75 microns, 10% Mo-Fe, powder particle size FSSS of 75 microns, 1.5% Si-Fe, powder FSSS of 75 microns, 2% ReNi, powder particle size FSSS of 2.5 microns, 1.5% carbon black micron powder.
The Fe powder is carbonyl iron powder or reduced iron powder; the mass percent of Mn accounting for Mn-Fe is 72 percent; mo accounts for 55 percent of the Mo-Fe by mass; the mass percent of Cr in the Cr-Fe alloy is 65 percent; the mass percent of Si in Si-Fe is 50%; the mass percent of Re in ReNi is 5%.
The preparation method of the titanium-based high manganese steel bonded ceramic alloy with high strength, toughness and wear resistance comprises the following steps:
step 1, weighing and mixing the raw material powder according to the weight percentage, adding a dispersing agent and a forming agent, and uniformly mixing to obtain a prepared raw material; the dispersant is dodecyl benzene sulfonic acid, and the mass fraction of the dispersant in the total amount of the mixture is 0.3%; the forming agent is rubber, and the mass fraction of the rubber in the total amount of the mixture is 3.5%;
step 4, directly filling the sieved mixed material or the dried granulated powder into a die to be pressed into a blank, wherein the pressing pressure is 200Mpa, and the pressure maintaining time is 15s;
step 5, loading the compression-molded blank into a sintering furnace, sequentially entering a heating degreasing stage, a solid-phase sintering stage and a liquid-phase sintering stage, entering a furnace cooling stage after the liquid-phase sintering is finished, taking out the high-strength, high-toughness and high-wear-resistance light titanium-based steel bonded metal ceramic alloy from the furnace, wherein the heating degreasing stage is carried out according to the procedures of preheating, vacuumizing, heating and heat preservation, preheating to 95 ℃, preserving heat for 35min, vacuumizing to below 6Pa, heating to 420 ℃, heating at a speed of not more than 4 ℃/min, and preserving heat for 70min at 420 ℃; in the solid phase sintering stage, the heating temperature is increased from 420 ℃ to 1240 ℃, the heating rate is not more than 6 ℃/min, the heat is preserved for 40min when the sintering temperature reaches 1000 ℃, and the heat is preserved for 40min when the sintering temperature reaches 1240 ℃; and when the solid phase sintering stage is finished and the liquid phase sintering stage is started, the temperature is increased to 1400 ℃ at the heating rate of 4 ℃/min, the heat preservation time of the liquid phase sintering stage is 50min, 3MPa argon gas is introduced, and the purity of the argon gas is more than 99.995%.
Example 5
As shown in fig. 7, this embodiment provides a high-toughness high-wear-resistance titanium-based high-manganese steel bonded ceramic alloy, which comprises the following components in percentage by mass: 35% TiC, powder particle size FSSS of 6 microns, 9% WC, powder particle size FSSS of 10 microns, 4.5% Ti (C, N), powder particle size FSSS of 3 microns, 4% Ni, powder particle size FSSS of 2.5 microns, 3.5% Co, powder particle size FSSS of 2.5 microns, 12% Fe, powder particle size FSSS of 95 microns, 15% Mn-Fe, powder particle size FSSS of 95 microns, 10% Mo-Fe, powder particle size FSSS of 90 microns, 3% Si-Fe, powder FSSS particle size of 85 microns, 2.5% ReNi, powder particle size FSSS of 2.5 microns, 1.5% carbon black micron powder.
The Fe powder is carbonyl iron powder or reduced iron powder; the mass percent of Mn accounting for Mn-Fe is 65%; mo accounts for 40 percent of the Mo-Fe by mass; the mass percent of Si in Si-Fe is 50%; re accounts for 5 percent of ReNi in mass percent.
The preparation method of the titanium-based high manganese steel bonded ceramic alloy with high strength, toughness and wear resistance comprises the following steps:
step 1, weighing and mixing the raw material powder according to the weight percentage, adding a dispersing agent and a forming agent, and uniformly mixing to obtain a prepared raw material; the dispersant is dodecyl benzene sulfonic acid which accounts for 0.5 percent of the total mass of the mixture; the forming agent is PEG, and the PEG accounts for 5% of the total mass of the mixture;
step 4, directly filling the sieved mixed material or the dried granulated powder into a die to be pressed into a blank, wherein the pressing pressure is 200Mpa, and the pressure maintaining time is 20s;
step 5, firstly, filling the compression-molded blank into a sintering furnace, and sequentially entering a heating degreasing stage, a solid-phase sintering stage and a liquid-phase sintering stage, entering a furnace cooling stage after the liquid-phase sintering is finished, and then taking out the blank from the furnace to take out the high-strength, high-toughness and high-wear-resistance light titanium-based steel bonded metal ceramic alloy, wherein the heating degreasing stage is carried out according to the procedures of preheating, vacuumizing, heating and heat preservation, the preheating is carried out to 100 ℃, the heat preservation is carried out for 30min, the vacuumizing is carried out to below 6Pa, the heating is carried out to 450 ℃, the heating speed is not more than 4 ℃/min, and the heat preservation is carried out for 50min at 450 ℃; in the solid phase sintering stage, the heating temperature is increased from 450 ℃ to 1250 ℃, the heating rate is not more than 8 ℃/min, the heat is preserved for 30min when the sintering temperature reaches 1120 ℃, and the heat is preserved for 30min when the sintering temperature reaches 1250 ℃; and when the solid phase sintering stage is finished and the liquid phase sintering stage is started, the temperature is raised to 1480 ℃ at the heating rate of 4 ℃/min, the heat preservation time of the liquid phase sintering stage is 45min, and meanwhile 4MPa of argon gas is introduced, wherein the purity of the argon gas is more than 99.995%.
Example 6
As shown in fig. 8 to 9, this embodiment provides a high-toughness high-wear-resistance titanium-based high-manganese steel bonded ceramic alloy, which comprises the following components by mass percent: 80% TiC, powder particle size FSSS of 4 microns, 2% WC, powder particle size FSSS of 10 microns, 1.5% TiN, powder particle size FSSS of 3 microns, 1.5% Ni, powder particle size FSSS of 2.5 microns, 1.5% Co, powder particle size FSSS of 2.5 microns, 4% Fe, powder particle size FSSS of 90 microns, 4% Mn-Fe, powder particle size FSSS of 95 microns, 3% Mo-Fe, powder particle size FSSS of 95 microns, 1% Cr-Fe, powder particle size FSSS of 95 microns, 0.5% Si-Fe, powder FSSS of 90 microns, 0.5% ReNi, powder particle size FSSS of 2.5 microns, 0.5% carbon black micron powder.
The Fe powder is carbonyl iron powder or reduced iron powder; the mass percent of Mn accounting for Mn-Fe is 85%; mo accounts for 40 percent of the Mo-Fe by mass; the mass percent of Cr in Cr-Fe is 50%; the mass percent of Si in Si-Fe is 80%; the mass percent of Re in ReNi is 15%.
The preparation method of the titanium-based high manganese steel bonded ceramic alloy with high strength, toughness and wear resistance comprises the following steps:
step 1, weighing and mixing the raw material powder according to the weight percentage, adding a dispersing agent and a forming agent, and uniformly mixing to obtain a prepared raw material; the dispersant is dodecyl benzene sulfonic acid, and the mass fraction of the dispersant in the total amount of the mixture is 0.3%; the forming agent is PEG, and the PEG accounts for 4% of the total weight of the mixture;
step 4, directly filling the sieved mixed material or the dried granulated powder into a die to be pressed into a blank, wherein the pressing pressure is 170Mpa, and the pressure maintaining time is 45s;
step 5, loading the compression-molded blank into a sintering furnace, sequentially entering a heating degreasing stage, a solid-phase sintering stage and a liquid-phase sintering stage, entering a furnace cooling stage after the liquid-phase sintering is finished, taking out the high-strength, high-toughness and high-wear-resistance light titanium-based steel bonded metal ceramic alloy, wherein the heating degreasing stage is carried out according to the procedures of preheating, vacuumizing, heating and heat preservation, preheating to 85 ℃, preserving heat for 45min, vacuumizing to below 6Pa, heating to 420 ℃, heating at a speed of not more than 5 ℃/min, and preserving heat for 70min at 420 ℃; in the solid phase sintering stage, the heating temperature is increased from 420 ℃ to 1220 ℃, the heating rate is not more than 6 ℃/min, the heat is preserved for 35min when the sintering temperature reaches 1100 ℃, and the heat is preserved for 35min when the sintering temperature reaches 1220 ℃; and when the solid phase sintering stage is finished and the liquid phase sintering stage is started, the temperature is increased to 1400 ℃ at the heating rate of 3 ℃/min, the heat preservation time of the liquid phase sintering stage is 70min, 3MPa argon gas is introduced, and the purity of the argon gas is more than 99.995%.
Example 7
The embodiment provides a high-strength, high-toughness and high-wear-resistance titanium-based high manganese steel bonded ceramic alloy which comprises the following components in percentage by mass: 85% TiC, powder particle size FSSS 2.5 microns, 1.5% WC, powder particle size FSSS 3 microns, 1% TiN, powder particle size FSSS 1.5 microns, 1% Ni, powder particle size FSSS 2 microns, 1% Co, powder particle size FSSS 2 microns, 2% Fe, powder particle size FSSS 96 microns, 4.5% Mn-Fe, powder particle size FSSS 97 microns, 1.5% Mo-Fe, powder particle size FSSS 95 microns, 0.5% Cr-Fe, powder particle size FSSS 90 microns, 0.5% Si-Fe, powder FSSS 92 microns, 1% ReNi, powder particle size FSSS 2.5 microns, 0.5% carbon black micron powder.
The Fe powder is carbonyl iron powder or reduced iron powder; the mass percent of Mn accounting for Mn-Fe is 85%; the Mo accounts for 80 percent of the Mo-Fe by mass; the Cr accounts for 80 percent of the Cr-Fe by mass; the mass percent of Si in Si-Fe is 80%; the mass percent of Re in ReNi is 15%.
The preparation method of the titanium-based high manganese steel bonded ceramic alloy with high strength, toughness and wear resistance comprises the following steps:
step 1, weighing and mixing the raw material powder according to the weight percentage, adding a dispersing agent and a forming agent, and uniformly mixing to obtain a prepared raw material; the dispersant is dodecyl benzene sulfonic acid which accounts for 0.3 percent of the total mass of the mixture; the forming agent is PEG, and the PEG accounts for 4% of the total weight of the mixture;
step 4, directly filling the sieved mixed material or the dried granulated powder into a die to be pressed into a blank, wherein the pressing pressure is 180Mpa, and the pressure maintaining time is 60s;
step 5, firstly, filling the compression-molded blank into a sintering furnace, and sequentially entering a heating degreasing stage, a solid-phase sintering stage and a liquid-phase sintering stage, entering a furnace cooling stage after the liquid-phase sintering is finished, and then taking out the blank from the furnace to take out the high-strength, high-toughness and high-wear-resistance light titanium-based steel bonded metal ceramic alloy, wherein the heating degreasing stage is carried out according to the procedures of preheating, vacuumizing, heating and heat preservation, the preheating is carried out to 95 ℃, the heat preservation is carried out for 35min, the vacuumizing is carried out to below 8Pa, the heating is carried out to 440 ℃, the heating speed is not more than 5 ℃/min, and the heat preservation is carried out for 60min at 440 ℃; in the solid phase sintering stage, the heating temperature is increased from 440 ℃ to 1230 ℃, the heating rate is not more than 6 ℃/min, the temperature is kept for 50min when the sintering temperature reaches 1000 ℃, and the temperature is kept for 45min when the sintering temperature reaches 1230 ℃; and when the solid phase sintering stage is finished and the liquid phase sintering stage is started, the temperature is increased to 1450 ℃ at the heating rate of 3.5 ℃/min, the heat preservation time of the liquid phase sintering stage is 50min, and 3.5MPa of argon gas is introduced, wherein the purity of the argon gas is more than 99.995%.
Example 8
The embodiment provides a high-strength, high-toughness and high-wear-resistance titanium-based high-manganese steel bonded ceramic alloy which comprises the following components in percentage by mass: 50% TiC, powder particle size FSSS of 5 microns, 6% WC, powder particle size FSSS of 5 microns, 1.5% TiN, powder particle size FSSS of 2.5 microns, 1.5% Ti (C, N), powder particle size FSSS of 2.5 microns, 3.5% Ni, powder particle size FSSS of 2 microns, 2% Co, powder particle size FSSS of 2 microns, 10% Fe, powder particle size FSSS of 60 microns, 12% Mn-Fe, powder particle size FSSS of 70 microns, 10% Mo-Fe, powder particle size FSSS of 65 microns, 1% Si-Fe, powder FSSS particle size of 55 microns, 1.5% ReNi, powder particle size FSSS of 2.5 microns, 1% carbon black micron powder.
The Fe powder is carbonyl iron powder or reduced iron powder; the mass percent of Mn accounting for Mn-Fe is 65%; mo accounts for 40 percent of the Mo-Fe by mass; the mass percent of Si in Si-Fe is 50%; the mass percent of Re in ReNi is 10%.
The preparation method of the titanium-based high manganese steel bonded ceramic alloy with high strength, toughness and wear resistance comprises the following steps:
step 1, weighing and mixing the raw material powder according to the weight percentage, adding a dispersing agent, a forming agent and a solvent, and uniformly mixing to obtain a prepared raw material; the dispersant is dodecyl benzene sulfonic acid, and the mass fraction of the dispersant in the total amount of the mixture is 0.3%; the forming agent is PEG, and the PEG accounts for 4% of the total weight of the mixture;
step 4, directly filling the sieved mixed material or the dried granulated powder into a die to be pressed into a blank, wherein the pressing pressure is 190Mpa, and the pressure maintaining time is 45s;
step 5, loading the compression-molded blank into a sintering furnace, sequentially entering a heating degreasing stage, a solid-phase sintering stage and a liquid-phase sintering stage, entering a furnace cooling stage after the liquid-phase sintering is finished, taking out the high-strength, high-toughness and high-wear-resistance light titanium-based steel bonded metal ceramic alloy from the furnace, wherein the heating degreasing stage is carried out according to the procedures of preheating, vacuumizing, heating and heat preservation, preheating to 85 ℃, preserving heat for 45min, vacuumizing to below 6Pa, heating to 410 ℃, heating at a speed of not more than 5 ℃/min, and preserving heat for 75min at 410 ℃; in the solid phase sintering stage, the heating temperature is increased from 410 ℃ to 1220 ℃, the heating rate is not more than 6 ℃/min, the heat is preserved for 40min when the sintering temperature reaches 980 ℃, and the heat is preserved for 45min when the sintering temperature reaches 1220 ℃; and when the solid phase sintering stage is finished and the liquid phase sintering stage is started, the temperature is increased to 1460 ℃ at the heating rate of 2.5 ℃/min, the heat preservation time of the liquid phase sintering stage is 50min, and 3MPa of argon gas is introduced, wherein the purity of the argon gas is more than 99.995%.
Example 9
The embodiment provides a high-strength, high-toughness and high-wear-resistance titanium-based high-manganese steel bonded ceramic alloy which comprises the following components in percentage by mass: 75% TiC, powder particle size FSSS of 2.5 microns, 4% WC, powder particle size FSSS of 6 microns, 1.5% TiN, powder particle size FSSS of 1.5 microns, 1.5% Ni, powder particle size FSSS of 1 micron, 1.5% Co, powder particle size FSSS of 1 micron, 5% Fe, powder particle size FSSS of 80 microns, 4% Mn-Fe, powder particle size FSSS of 70 microns, 3% Mo-Fe, powder particle size FSSS of 80 microns, 1.5% Cr-Fe, powder particle size FSSS of 80 microns, 0.5% Si-Fe, powder FSSS particle size of 65 microns, 1.5% ReNi, powder particle size FSSS of 1 micron, 1% carbon black micron powder.
The Fe powder is carbonyl iron powder or reduced iron powder; the mass percent of Mn accounting for Mn-Fe is 85%; mo accounts for 40 percent of the Mo-Fe by mass; the mass percent of Cr in the Cr-Fe alloy is 65 percent; the mass percent of Si in Si-Fe is 72%; the mass percent of Re in ReNi is 7%.
The preparation method of the titanium-based high manganese steel bonded ceramic alloy with high strength, toughness and wear resistance comprises the following steps:
step 1, weighing and mixing the raw material powder according to the weight percentage, adding a dispersing agent and a forming agent, and uniformly mixing to obtain a prepared raw material; the dispersant is dodecyl benzene sulfonic acid which accounts for 0.2 percent of the total mass of the mixture; the forming agent is PEG, and the PEG accounts for 3.5 percent of the total mass of the mixture;
step 4, directly filling the sieved mixed material or the dried granulated powder into a die to be pressed into a blank, wherein the pressing pressure is 170Mpa, and the pressure maintaining time is 80s;
step 5, loading the compression-molded blank into a sintering furnace, sequentially entering a heating degreasing stage, a solid-phase sintering stage and a liquid-phase sintering stage, entering a furnace cooling stage after the liquid-phase sintering is finished, taking out the high-strength, high-toughness and high-wear-resistance light titanium-based steel bonded metal ceramic alloy from the furnace, wherein the heating degreasing stage is carried out according to the procedures of preheating, vacuumizing, heating and heat preservation, preheating to 85 ℃, preserving heat for 60min, vacuumizing to below 6Pa, heating to 430 ℃, heating at a speed of not more than 5 ℃/min, and preserving heat for 90min at 430 ℃; in the solid phase sintering stage, the heating temperature is increased from 430 ℃ to 1240 ℃, the heating rate is not more than 8 ℃/min, the heat is preserved for 35min when the sintering temperature reaches 1080 ℃, and the heat is preserved for 35min when the sintering temperature reaches 1240 ℃; and when the solid phase sintering stage is finished and the liquid phase sintering stage is started, the temperature is increased to 1460 ℃ at the heating rate of 4 ℃/min, the heat preservation time of the liquid phase sintering stage is 50min, and 3MPa of argon gas is introduced, wherein the purity of the argon gas is more than 99.995%.
In order to verify the properties of the high-strength, high-toughness and high-wear-resistance titanium-based high-manganese steel bonded ceramic alloy obtained in each embodiment of the invention, the products of the above embodiments are used for measuring relevant parameters, and the average value of the results of 5-7 test samples is selected as the test result in the test. The comparative example was 42% by mass of Ti C, the remainder using high manganese steel alloy powder as the binder phase.
TABLE 1 wear resistance test of high strength, toughness and wear resistance Ti-based high manganese steel bonded ceramic alloy and conventional MT52 alloy
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, and the scope of the present invention is defined by the appended claims, and all changes that come within the meaning and range of equivalency of the specification are therefore intended to be embraced therein. As shown in Table 1, the high manganese steel bonded ceramic alloy prepared by the method has high strength, high hardness and good fracture toughness, and compared with a comparative example, the bending strength of the index is improved by 15% -20%, the hardness is improved by 20% -40%, and the fracture toughness is improved by 20% -45%.
Claims (10)
1. The high-strength high-toughness high-wear-resistance titanium-based high-manganese steel bonded ceramic alloy is characterized by comprising the following components in percentage by mass:
hard phase powder: 35-85% of TiC, powder FSSS particle size 2.5-6.0 μm;
strengthening phase powder: 1.5-10% WC, powder FSSS particle size not greater than 12.0 microns;
0-5% TiN, powder FSSS particle size not greater than 3.5 microns;
0-5% Ti (C, N), powder FSSS particle size not greater than 3.5 microns;
binder phase powder: 0-5% Ni, powder FSSS particle size not greater than 3.0 microns;
0-5% Co, powder FSSS particle size not greater than 3.0 microns;
0-25% Fe, powder FSSS particle size not greater than 100.0 microns;
10-30% mn-Fe, powder FSSS particle size not greater than 100.0 microns;
0-20 percent of Mo-Fe, the FSSS particle size of the powder is not more than 100.0 microns;
0-20% of Cr-Fe, the FSSS particle size of the powder is not more than 100.0 microns;
0-5% Si-Fe, powder FSSS particle size not greater than 100.0 microns;
interface strengthening powder: 0-5% ReNi, powder FSSS particle size not greater than 3.0 microns;
0-1.5% carbon black micron powder;
the Fe powder is carbonyl iron powder or reduced iron powder; the mass percentage of Mn in Mn-Fe is 45-85%; mo accounts for 40-80% of the Mo-Fe by mass percent; the mass percent of Cr in Cr-Fe is 50-80%; the mass percentage of Si in Si-Fe is 50-80%; re accounts for 5 to 15 percent of ReNi in percentage by mass.
2. The high-strength high-toughness high-wear-resistance titanium-based high-manganese steel bonded ceramic alloy according to claim 1, which is characterized by comprising the following components in percentage by mass:
hard phase powder: 35-82% of TiC, powder FSSS particle size 2.5-6.0 micron;
strengthening phase powder: 1.5-10% wc, powder FSSS particle size not greater than 12.0 microns;
1-5% TiN, powder FSSS particle size not greater than 3.5 microns;
0-5% Ti (C, N), powder FSSS particle size not greater than 3.5 microns;
binder phase powder: 1-5% ni, powder FSSS particle size not greater than 3.0 microns;
1-5% Co, powder FSSS particle size not greater than 3.0 microns;
5-25% Fe, powder FSSS particle size not greater than 100.0 μm;
10-25% Mn-Fe, powder FSSS particle size not greater than 100.0 microns;
2.5-20% Mo-Fe, powder FSSS particle size is not more than 100.0 micron;
0-10% of Cr-Fe, the FSSS particle size of the powder is not more than 100.0 microns;
0.20 to 3% Si-Fe, powder FSSS particle size not greater than 100.0 microns;
interface strengthening powder: 0.1-5% ReNi, powder FSSS particle size not greater than 3.0 microns;
0.5-1.5% carbon black micron powder.
3. The high-strength high-wear-resistance titanium-based high-manganese steel bonded ceramic alloy according to claim 1 or 2, which is characterized by comprising the following components in percentage by weight:
hard phase powder: tiC 40-70% and FSSS powder size 2.5-4.5 μm;
strengthening phase powder: 2.5-8% WC, powder FSSS particle size 2.5-10.0 microns;
1-2.5% TiN, powder FSSS particle size 1.0-2.5 microns;
1-2.5% ti (C, N), powder FSSS particle size 1.0-2.5 microns;
binder phase powder: 1.5-3.5% Ni, powder FSSS particle size 1.5-3.5 μm;
1-3% Co, powder FSSS particle size 1.5-3.0 microns;
5-15% of Fe, powder FSSS particle size 45.0-75.0 μm,
15-25% Mn-Fe, powder FSSS particle size 45.0-75.0 μm,
2.5-10% Mo-Fe, powder FSSS particle size 45.0-75.0 μm,
2-8% of Cr-Fe, the grain size of FSSS powder is 45.0-75.0 microns;
0.25-2.0% Si-Fe, powder FSSS particle size 45.0-75.0 μm;
interface strengthening powder: 0.5-2% ReNi, powder FSSS particle size not greater than 3.0 microns;
0.5 to 1.0 percent of carbon black powder.
4. The preparation method of the high-strength-toughness high-wear-resistance titanium-based high-manganese steel bonded ceramic alloy according to the claims 1 to 3, which is characterized by comprising the following steps of:
step 1, weighing and mixing the raw material powder according to the weight percentage, adding a dispersing agent and a forming agent, and uniformly mixing to obtain a prepared raw material;
step 2, putting the prepared raw materials into a grinding hard alloy or stainless steel ball milling tank of a ball mill, adding a solvent, and performing ball milling to obtain mixed slurry;
step 3, drying the mixed slurry, and then carrying out sieving or spray granulation by using a 200-300-mesh sieve;
step 4, directly filling the sieved mixed material or the dried granulated powder into a die to be pressed into a blank;
and 5, loading the compression-molded blank into a sintering furnace, sequentially entering a heating degreasing stage, a solid-phase sintering stage and a liquid-phase sintering stage, entering a furnace cooling stage after the liquid-phase sintering is finished, and taking out the high-strength, high-toughness and high-wear-resistance light titanium-based steel bonded metal ceramic alloy from the furnace.
5. The preparation method according to claim 4, wherein in the step 1, the dispersant is dodecylbenzene sulfonic acid, stearic acid or ethofenomycin, and the mass fraction of the dispersant in the total amount of the mixture is 0.1-0.5%; the forming agent is rubber, paraffin or PEG, the forming agent accounts for 2.5-5% of the total weight of the mixture, the solvent comprises gasoline, glycol or hexane, and the volume mass ratio of the solvent to the total weight of the mixture is 280-400ml.
6. The preparation method according to claim 4, wherein the ball mill in the step 2 is a rolling ball mill, the diameter of the cemented carbide ball is 6.25-10 mm, the ball-to-material ratio is 2.5-5: l; the ball milling rotation speed of the ball mill is 70-80 r/min, and the ball milling time is 16-48 h.
7. The method according to claim 4, wherein the pressure for the pressing in step 4 is 150 to 200MPa, and the dwell time is 5 to 120s.
8. The preparation method according to claim 4, wherein the heating and degreasing step is carried out by preheating to 80-100 ℃, maintaining the temperature for 30-60min, vacuumizing to below 10Pa, raising the temperature to 380-450 ℃, keeping the temperature at 380-450 ℃ at a speed of not more than 5 ℃/min, and maintaining the temperature for 50-120 min.
9. The preparation method according to claim 4, wherein the heating temperature in the solid phase sintering stage is increased from 380-450 ℃ to 1200-1250 ℃, the heating rate is not more than 10 ℃/min, the temperature is maintained for 30-60min when the sintering temperature reaches 900-1120 ℃, and the temperature is maintained for 30-60min when the sintering temperature reaches 1200-1250 ℃.
10. The preparation method according to claim 4, wherein when the liquid phase sintering stage is started after the solid phase sintering stage is completed, the temperature is raised to 1340-1480 ℃ at a temperature rise rate of 2-5 ℃/min, the holding time of the liquid phase sintering stage is 45-90 min, and argon gas with the purity of more than 99.995% is introduced at the same time under the pressure of 1-5 MPa.
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