CN114438421B - Phase-change induced plasticity steel, and preparation method and application thereof - Google Patents

Phase-change induced plasticity steel, and preparation method and application thereof Download PDF

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Publication number
CN114438421B
CN114438421B CN202011116135.6A CN202011116135A CN114438421B CN 114438421 B CN114438421 B CN 114438421B CN 202011116135 A CN202011116135 A CN 202011116135A CN 114438421 B CN114438421 B CN 114438421B
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induced plasticity
plasticity steel
powder
homogenization treatment
tissue homogenization
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CN114438421A (en
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朱和明
侯乃贺
魏辽
薛占峰
谷磊
赵向阳
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China Petroleum and Chemical Corp
Sinopec Research Institute of Petroleum Engineering
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China Petroleum and Chemical Corp
Sinopec Research Institute of Petroleum Engineering
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous alloys
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/04—Making ferrous alloys by melting
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese

Abstract

The invention provides phase change induced plasticity steel, a preparation method and application thereof. The transformation induced plasticity steel comprises 15-20% of Mn, 1-2% of Al, 0.4-0.6% of C, 0.1-0.3% of Si, 0.01-0.05% of additives and the balance of Fe, wherein the total mass of the transformation induced plasticity steel is taken as 100%.

Description

Phase-change induced plasticity steel, and preparation method and application thereof
Technical Field
The invention provides phase change induced plasticity steel, a preparation method and application thereof.
Background
The transformation induced plasticity (TRIP) steel is one of the ultrahigh-strength steels, is in the leading field of the development of the ultrahigh-strength steels, wherein the Fe-Mn-Al-C-Si TRIP steel has the advantages of high strength, high elongation at break, no magnetism, good low-temperature toughness, low alloy density and the like, and has great application prospect and potential in the fields of advanced transportation systems, particularly the automobile industry and the train industry with high safety standards.
In addition, the Fe-Mn-Al-C-Si TRIP steel can partially replace expensive austenitic stainless steel in a non-corrosive environment, and can be used for other liquid storage and transportation in the technical field of refrigeration. One of the factors limiting the application of the Fe-Mn-Al-C-Si TRIP steel is poor corrosion resistance, so that the development of the Fe-Mn-Al-C-Si TRIP steel with low cost and excellent corrosion resistance is urgently needed.
Disclosure of Invention
One of the present invention provides a phase change induced plasticity steel, including 15 to 20% of Mn, 1 to 2% of Al, 0.4 to 0.6% of C, 0.1 to 0.3% of Si, 0.01 to 0.05% of an additive, and the balance Fe, by 100% of the total mass of the phase change induced plasticity steel. Further, it is to be noted that impurities approaching 0 are inevitably present in the transformation-induced plasticity steel.
In one embodiment, the additive is MoO 3 、Mn 5 N 2 、Si 3 N 4 At least one of silicon calcium powder, silicon iron powder and silicon zirconium powder.
The second invention provides a method of producing a transformation induced plasticity steel according to any one of the first to third inventions, comprising the steps of:
1) Adding the raw materials into a smelting furnace to prepare an ingot; forging the cast ingot to obtain an original blank; the raw materials comprise manganese, aluminum, carbon powder, silicon powder, an additive and iron;
2) Carrying out tissue homogenization treatment on the original blank to obtain a tissue homogenization treatment material;
3) And carrying out hot rolling on the tissue homogenization treatment material to obtain the transformation induced plasticity steel.
In one embodiment, in step 1), the ingot is made by melting at 1950 to 2050 ℃ for 30 to 50 minutes.
In one embodiment, in step 1), forging is performed at 1580 to 1620 ℃ for 2 to 4 hours.
In one embodiment, in step 2), the tissue homogenization treatment is performed at 1130 to 1170 ℃ for 220 to 260 min.
In a specific embodiment, in step 3), the bloom temperature of the hot rolling is 1030 ℃ to 1070 ℃.
In a specific embodiment, in step 3), the final rolling temperature of the hot rolling is 880 to 920 ℃.
In a specific embodiment, in step 3), the time for the hot rolling is 1.5 to 2 hours.
The third aspect of the invention provides the use of a transformation induced plasticity steel according to any one of the first aspect of the invention or prepared by the method of any one of the second aspect of the invention for corrosion resistance.
The invention has the beneficial effects that:
the transformation induced plasticity steel has the excellent characteristics of high strength, high hardness, high elongation at break, good corrosion resistance and the like.
Drawings
FIG. 1 shows the potentiodynamic polarization curves of example 1.
Figure 2 shows the potentiodynamic polarization curve of example 2.
Fig. 3 shows the potentiodynamic polarization curve of example 3.
Fig. 4 shows the potentiodynamic polarization curve of comparative example 1.
Fig. 5 shows the potentiodynamic polarization curve of comparative example 2.
Fig. 6 shows the potentiodynamic polarization curve of comparative example 3.
Detailed Description
The present invention is further described below with reference to examples, which are intended to be illustrative only, and are not intended to limit the scope of the present invention in any way.
Example 1
1) Mixing pure manganese, pure aluminum, carbon powder, silicon powder and MoO 3 、Mn 5 N 2 Weighing pure iron according to the proportion of 15%, 1%, 0.4%, 0.1%, 0.005%, 83.49%, adding into a smelting furnace, introducing argon gas into the smelting furnace as protective gas, heating the smelting furnace to 1950 ℃, melting the molten steel, preserving heat for 30min, and cooling the molten steel to room temperature in the furnace to obtain an ingot; forging the cast ingot at 1580 ℃ for 2 hours to obtain an original blank;
2) Preserving the heat of the original blank at 1130 ℃ for 220min to obtain a tissue homogenization treatment material;
3) And rolling the tissue homogenization treatment material, wherein the initial rolling temperature is 1030 ℃, the final rolling temperature is 880 ℃, and the rolling time is 1.5h, so as to obtain the hot rolled sheet of the transformation induced plasticity steel with the final thickness of 4.0 mm.
Example 2
1) Mixing pure manganese, pure aluminum, carbon powder, silicon powder and Si 3 N 4 Weighing the silicon calcium powder and the pure iron according to the proportion of 18%, 1.5%, 0.5%, 0.2%, 0.01% and 79.78%, then adding into a smelting furnace, introducing argon gas into the smelting furnace as protective gas, heating the smelting furnace to 2000 ℃, melting the molten steel, preserving heat for 40min, and cooling the molten steel in the furnace to room temperature to obtain an ingot; forging the cast ingot at 1600 ℃ for 3 hours to obtain an original blank;
2) Preserving the temperature of the original blank at 1130 ℃ for 240min to obtain a tissue homogenization treatment material;
3) And rolling the material subjected to the tissue homogenization treatment, wherein the initial rolling temperature is 1050 ℃, the final rolling temperature is 900 ℃, and the rolling time is 1.7h, so that the hot rolled plate of the transformation induced plasticity steel with the final thickness of 4.0mm is obtained.
Example 3
1) Weighing pure manganese, pure aluminum, carbon powder, silicon powder, ferrosilicon powder, silicon zirconium powder and pure iron according to the proportion of 20%, 2%, 0.6%, 0.3%, 0.015% and 77.07%, adding into a smelting furnace, introducing argon gas into the smelting furnace as protective gas, heating the smelting furnace to 2050 ℃, melting molten steel, preserving heat for 50min, and cooling the molten steel in the furnace to room temperature to obtain an ingot; forging the cast ingot at 1620 ℃ for 4 hours to obtain an original blank;
2) Preserving the original blank at 1170 ℃ for 260min to obtain a tissue homogenization treatment material;
3) And rolling the tissue homogenization treatment material, wherein the initial rolling temperature is 1070 ℃, the final rolling temperature is 920 ℃, and the rolling time is 2 hours, so as to obtain the transformation induced plasticity steel hot rolling plate with the final thickness of 4.0 mm.
Comparative example 1
1) Weighing pure manganese, pure aluminum, carbon powder, silicon powder and pure iron according to the proportion of 15%, 1%, 0.4%, 0.1% and 83.5%, adding the weighed pure manganese, pure aluminum, carbon powder, silicon powder and pure iron into a smelting furnace, introducing argon into the smelting furnace as protective gas, heating the smelting furnace to 1950 ℃, melting molten steel, keeping the temperature for 30min, and cooling the molten steel in the furnace to room temperature to obtain an ingot; forging the cast ingot at 1580 ℃ for 2 hours to obtain an original blank;
2) Preserving the temperature of the original blank at 1130 ℃ for 220min to obtain a tissue homogenization treatment material;
3) And rolling the material subjected to the tissue homogenization treatment, wherein the initial rolling temperature is 1030 ℃, the final rolling temperature is 880 ℃, and the rolling time is 1.5h, so that the hot rolled plate of the transformation induced plasticity steel with the final thickness of 4.0mm is obtained.
Comparative example 2
1) Weighing pure manganese, pure aluminum, carbon powder, silicon powder and pure iron according to the proportion of 18%, 1.5%, 0.5%, 0.2% and 79.8%, adding into a smelting furnace, introducing argon gas into the smelting furnace as protective gas, heating the smelting furnace to 2000 ℃, melting molten steel, preserving heat for 40min, and cooling the molten steel in the furnace to room temperature to obtain an ingot; forging the cast ingot at 1600 ℃ for 3 hours to obtain an original blank;
2) Preserving the temperature of the original blank at 1130 ℃ for 240min to obtain a tissue homogenization treatment material;
3) And rolling the material subjected to the tissue homogenization treatment, wherein the initial rolling temperature is 1050 ℃, the final rolling temperature is 900 ℃, and the rolling time is 1.7h, so that the hot rolled plate of the transformation induced plasticity steel with the final thickness of 4.0mm is obtained.
Comparative example 3
1) Weighing pure manganese, pure aluminum, carbon powder, silicon powder and pure iron according to the proportion of 20%, 2%, 0.6%, 0.3% and 77.1%, adding the weighed pure manganese, pure aluminum, carbon powder, silicon powder and pure iron into a smelting furnace, introducing argon into the smelting furnace as protective gas, heating the smelting furnace to 2050 ℃, melting molten steel, keeping the temperature for 50min, and cooling the molten steel to room temperature in the furnace to obtain an ingot; forging the cast ingot at 1620 ℃ for 4 hours to obtain an original blank;
2) Preserving the original blank at 1170 ℃ for 260min to obtain a tissue homogenization treatment material;
3) And rolling the material subjected to the tissue homogenization treatment, wherein the initial rolling temperature is 1070 ℃, the final rolling temperature is 920 ℃, and the rolling time is 2 hours, so that the hot rolled plate of the transformation induced plasticity steel with the final thickness of 4.0mm is obtained.
Mechanical Property measurement
The products of examples 1 to 3 and comparative examples 1 to 3 were tested for tensile strength, yield strength and elongation at break using a universal tester in accordance with GB/T228.1-2010-part 1 of the tensile test for metallic materials: method of testing at room temperature ". The results are shown in Table 1.
The hardness of the products of examples 1 to 3 and comparative examples 1 to 3 was tested using a vickers hardness tester according to GBT4340.1-2009 metal vickers hardness test part 1: test method. The results are shown in Table 1.
TABLE 1
Examples Tensile strength MPa Yield strength MPa Elongation at break% Hardness HV
Example 1 1334 883 63 312
Example 2 1268 867 59 324
Example 3 1307 859 61 335
Comparative example 1 1254 792 58 298
Comparative example 2 1295 785 56 307
Comparative example 3 1243 762 56 305
As can be seen from table 1, the strength, elongation at break and hardness of the examples are improved as compared with those of comparative examples 1 to 3, indicating that the transformation induced plasticity steels prepared in examples 1 to 3 have more excellent mechanical properties.
Test of Corrosion resistance
An AMETEK P4000 electrochemical workstation is used for carrying out corrosion resistance tests on the examples and the comparative examples, 3.5wt% of sodium chloride aqueous solution is used as a corrosion medium, a 3-electrode system is adopted, a tested sample is used as a working electrode, a platinum sheet is used as an auxiliary electrode, a saturated calomel electrode is used as a reference electrode, and a potentiodynamic polarization curve is tested.
The potentiodynamic polarization curve of example 1 is shown in fig. 1, the potentiodynamic polarization curve of example 2 is shown in fig. 2, the potentiodynamic polarization curve of example 3 is shown in fig. 3, the potentiodynamic polarization curve of comparative example 1 is shown in fig. 4, the potentiodynamic polarization curve of comparative example 2 is shown in fig. 5, and the potentiodynamic polarization curve of comparative example 3 is shown in fig. 6.
As can be seen from comparison of FIGS. 1 and 4, FIGS. 2 and 5, and FIGS. 3 and 6, the self-corrosion potential of the transformation-induced plasticity steels prepared in examples 1 to 3 was increased by almost 100mV and the corrosion current density was significantly decreased, as compared with comparative examples 1 to 3, indicating that the transformation-induced plasticity steels prepared in examples 1 to 3 had more excellent corrosion resistance.
While the invention has been described with reference to specific embodiments, those skilled in the art will appreciate that various changes can be made without departing from the true spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation, material, composition of matter, and method to the essential scope and spirit of the present invention. All such modifications are intended to be included within the scope of the present invention as defined in the appended claims.

Claims (9)

1. A phase change induced plasticity steel, taken as 100% by total mass of the phase change induced plasticity steel, comprising 15 to 20% Mn, 1 to 2% Al, 0.4 to 0.6% C, 0.1 to 0.3% Si, 0.01 to 0.05% additives, and the balance Fe;
the additive is MoO 3 、Mn 5 N 2 、Si 3 N 4 At least one of silicon calcium powder, silicon iron powder and silicon zirconium powder.
2. A method of producing the transformation induced plasticity steel as set forth in claim 1, comprising the steps of:
1) Adding the raw materials into a smelting furnace to prepare an ingot; forging the cast ingot to obtain an original blank; the raw materials comprise manganese, aluminum, carbon powder, silicon powder, an additive and iron;
2) Carrying out tissue homogenization treatment on the original blank to obtain a tissue homogenization treatment material;
3) And carrying out hot rolling on the tissue homogenization treatment material to obtain the transformation induced plasticity steel.
3. The method of claim 2, wherein in step 1), the ingot is prepared by melting at 1950 to 2050 ℃ for 30 to 50 minutes.
4. The method of claim 2, wherein in step 1), forging is performed at 1580 to 1620 ℃ for 2 to 4 hours.
5. The method of claim 2, wherein in step 2), the tissue homogenization treatment is performed by incubating at 1130 to 1170 ℃ for 220 to 260 min.
6. The method according to claim 2, wherein in step 3), the hot rolling bloom temperature is 1030 ℃ to 1070 ℃.
7. The method according to claim 2, wherein in step 3), the finish rolling temperature of the hot rolling is 880 to 920 ℃.
8. The method according to claim 2, wherein the hot rolling time in step 3) is 1.5 to 2 hours.
9. Use of a transformation induced plasticity steel according to claim 1 or produced by the method of any one of claims 2 to 8 for corrosion resistance.
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CN1109774C (en) * 2000-11-17 2003-05-28 孙传水 Refractory alloy composition
CN101580916B (en) * 2009-06-25 2011-06-22 莱芜钢铁集团有限公司 High-strength high-plasticity twinning-induced plasticity steel and manufacturing method thereof
CN101717885A (en) * 2009-12-22 2010-06-02 上海大学 Low-carbon twin crystal induction plasticity steel with high strength and high plasticity
EP2402472B2 (en) * 2010-07-02 2017-11-15 ThyssenKrupp Steel Europe AG High-tensile, cold formable steel and flat steel product composed of such steel
CN102400036B (en) * 2010-09-07 2014-07-09 鞍钢股份有限公司 Twin induced plastic steel with high elongation percentage and high hole expansion rate and manufacture method thereof
CN102330019A (en) * 2011-10-28 2012-01-25 上海大学 Preparation method for vanadium-containing twin crystal induced plastic steel with low carbon, high strength and high plasticity
WO2015077932A1 (en) * 2013-11-27 2015-06-04 何丽丽 Manganese steel and production method thereof
CN103820735B (en) * 2014-02-27 2016-08-24 北京交通大学 A kind of superhigh intensity C-Al-Mn-Si system low density steel and preparation method thereof
CN104862586A (en) * 2015-06-24 2015-08-26 上海大学 Ultra-high strength middle-carbon nickeliferous high-manganese twinning induced plasticity steel and preparation method
CN110423950B (en) * 2019-09-06 2020-09-04 安徽工业大学 Fe-Mn-Al-C series medium-manganese low-temperature steel and preparation method thereof

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