CN109609813A - A kind of System of Silica/Aluminum Microparticle alloy and preparation method thereof - Google Patents
A kind of System of Silica/Aluminum Microparticle alloy and preparation method thereof Download PDFInfo
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- CN109609813A CN109609813A CN201811558225.3A CN201811558225A CN109609813A CN 109609813 A CN109609813 A CN 109609813A CN 201811558225 A CN201811558225 A CN 201811558225A CN 109609813 A CN109609813 A CN 109609813A
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- aluminum
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/043—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with silicon as the next major constituent
Abstract
The present invention provides a kind of System of Silica/Aluminum Microparticle alloy and preparation method thereof, the mass percentage composition of the silico-aluminum element are as follows: Si 23-27%, Mg 0.8-1.2%, Cu 3.5-4.5%, Fe≤0.4%, surplus Al.Include the following steps: that silico-aluminum elements Si, Mg, Cu, Fe, the Al carry out injection forming in proportion, obtain first product, first product is subjected to the heat treatment of T6 state and obtains finished product.Brought by of the invention the utility model has the advantages that by adjusting silico-aluminum element ratio and improved method, so that the System of Silica/Aluminum Microparticle alloy of preparation has higher tensile strength and higher hardness.
Description
Technical field
The invention belongs to aluminium alloy and its technology field more particularly to a kind of System of Silica/Aluminum Microparticle alloy and its preparation sides
Method.
Background technique
Silico-aluminum possesses that specific gravity is small, density is low, high thermal conductivity, thermal expansion coefficient is low, machining property is good, wear-resisting
Corrosion resistance is good, surface hardness is high and with advantages such as certain elevated temperature strengths.It is therefore widely used in radar Electronic Packaging
The fields such as material, cylinder jacket and connecting rod wear-resistant material, piston, rotor material.In order to further increase the performance of silico-aluminum,
Those skilled in the art solve traditional preparation process of aluminium alloy problem by using spray forming technology.Coarse irregular shape
Primary silicon is transformed into equally distributed fine and closely woven silicon particle, and reinforced phase is by growing needle-shaped Morphological Transitions into conformation of rules and being evenly distributed on
On matrix, reinforced phase also enhances therewith with basal body interface combination degree.But it is hard to prepare silico-aluminum using spray forming technology
It spends weaker with intensity.
Summary of the invention
In order to solve the above-mentioned technical problems, the present invention provides a kind of System of Silica/Aluminum Microparticle alloys and preparation method thereof.In order to right
The some aspects of the embodiment of disclosure have a basic understanding, and simple summary is shown below.The summarized section is not general
General commentary, nor to determine key/critical component or describe the protection scope of these embodiments.Its sole purpose is to use
Some concepts are presented in simple form, in this, as the preamble of following detailed description.
The present invention adopts the following technical scheme:
In some alternative embodiments, a kind of System of Silica/Aluminum Microparticle alloy, the mass percentage composition of the silico-aluminum element
Are as follows: Si 23-27%, Mg 0.8-1.2%, Cu 3.5-4.5%, Fe≤0.4%, surplus Al.
Wherein, the mass percentage composition of the silico-aluminum element are as follows: Si 23%, Mg 0.8%, Cu 34.5%, Fe
0.4%, surplus Al.
Wherein, the mass percentage composition of the silico-aluminum element are as follows: Si 27%, Mg 1.2%, Cu 4.5%, Fe
0.1%, surplus Al.
Wherein, the mass percentage composition of the silico-aluminum element are as follows: Si 25%, Mg 1.0%, Cu 4.0%, Fe
0.2%, surplus Al.
A kind of preparation method of System of Silica/Aluminum Microparticle alloy, includes the following steps:
Silico-aluminum elements Si, Mg, Cu, Fe, the Al carry out injection forming in proportion, obtain first product,
First product is subjected to the heat treatment of T6 state and obtains finished product.
Wherein, T6 state be heat-treated the step of include:
1-4h is kept the temperature lower than burnt temperature；
Water cooling；
High-temperature aging 12-36h is carried out, finished product is obtained.
Wherein, it is lower than 10-40 DEG C of burnt temperature.
Wherein, described to be positively correlated lower than the duration of burnt temperature heat preservation and the volume of first product.
Wherein, the duration for carrying out high-temperature aging and the volume of first product are positively correlated.
Brought by of the invention the utility model has the advantages that by adjusting silico-aluminum element ratio and improved method, so that preparation
System of Silica/Aluminum Microparticle alloy has higher tensile strength and higher hardness.
For the above and related purposes, one or more embodiments include being particularly described below and in claim
In the feature that particularly points out.Certain illustrative aspects are described in detail in the following description and the annexed drawings, and its instruction is only
Some modes in the utilizable various modes of the principle of each embodiment.Other benefits and novel features will be under
The detailed description in face is considered in conjunction with the accompanying and becomes obvious, the disclosed embodiments be all such aspects to be included and they
Be equal.
Detailed description of the invention
Fig. 1 is the metallograph of the silico-aluminum of one of embodiment of the present invention
Specific embodiment
The following description and drawings fully show specific embodiments of the present invention, to enable those skilled in the art to
Practice them.Other embodiments may include structure, logic, it is electrical, process and other change.Embodiment
Only represent possible variation.Unless explicitly requested, otherwise individual components and functionality is optional, and the sequence operated can be with
Variation.The part of some embodiments and feature can be included in or replace part and the feature of other embodiments.This hair
The range of bright embodiment includes equivalent obtained by the entire scope of claims and all of claims
Object.
In some illustrative embodiments, a kind of System of Silica/Aluminum Microparticle alloy, the mass percent group of the silico-aluminum element
Become: Si 23-27%, Mg 0.8-1.2%, Cu 3.5-4.5%, Fe≤0.4%, surplus Al.
Embodiment 1: the mass percentage composition of the silico-aluminum element are as follows: Si 23%, Mg 0.8%, Cu 34.5%,
Fe 0.4%, surplus Al.
Embodiment 2: the mass percentage composition of the silico-aluminum element are as follows: Si 27%, Mg 1.2%, Cu 4.5%, Fe
0.1%, surplus Al.
Embodiment 3: the mass percentage composition of the silico-aluminum element are as follows: Si 25%, Mg 1.0%, Cu 4.0%, Fe
0.2%, surplus Al.
A kind of preparation method of System of Silica/Aluminum Microparticle alloy, includes the following steps:
Silico-aluminum elements Si, Mg, Cu, Fe, the Al carry out injection forming in proportion, obtain first product.According to ratio
It can be the mass percentage composition of the silico-aluminum element are as follows: Si 23-27%, Mg 0.8-1.2%, Cu 3.5-4.5%, Fe
≤ 0.4%, surplus Al.Specifically further tested with three groups of ratios in embodiment 1-3.
First product is subjected to the heat treatment of T6 state and obtains finished product.T6 is the state of progress artificial aging after solution heat treatment.Aluminium closes
The T6 heat treatment state of gold is the peak timeliness state of aluminium alloy artificial aging after solid solution, can greatly promote the tension of aluminium alloy
Intensity and hardness are suitable for mechanical property and the higher product of hardness requirement.
The step of specific T6 state heat treatment includes:
Lower than 10-40 DEG C of heat preservation 1-4h of burnt temperature；When fusing point of the heating temperature higher than low melting point eutectic, it is total to low melting point
The referred to as burning of the phenomenon that brilliant and crystal boundary remelt.The heating temperature of heat-treatable strengthened aluminum alloy is more than the alloy low melting point eutectic temperature
Crystal boundary can be made to be roughened when spending, or even fusing, cause the mechanical performance of the alloy sharply to decline, this temperature is burnt temperature.It is excellent
Choosing is lower than 15 DEG C of burnt temperature.
Water cooling.Until cooling is finished to room temperature；
High-temperature aging 12-36h is carried out, finished product AlSi25Cu4Mg is obtained.Ageing treatment is quenched or processes for metal,
Especially after cold deformation, with the extension of time, hardness and strength increased and plasticity and toughness decline, tissue by
Metastable state is gradually transitions stable state, and this phenomenon is known as timeliness, and this treatment process is ageing treatment, it can be divided into
Natrual ageing and two kinds of artificial aging.
High-temperature aging processing belongs to artificial aging processing, be by workpiece high-temperature heating come remove workpiece processing and
The stress left when quenching and deformation, reach the stability of its tissue, and can be described as thermal finalization.
It is described to be positively correlated lower than the duration of burnt temperature heat preservation and the volume of first product.
The duration for carrying out high-temperature aging and the volume of first product are positively correlated.
For 1,2,3 three group of finished product of embodiment, hardness and tensile strength test are carried out.
Test result are as follows:
The tensile strength of embodiment 1 is 430MPa, hardness 88.5HRB.
The tensile strength of embodiment 2 is 400MPa, hardness 87.4HRB.
The tensile strength of embodiment 3 is 473MPa, hardness 89.5HRB.
The tensile strength of existing silico-aluminum is 242MPa, hardness 82.4HRB.
Therefore by comparing it is found that the silico-aluminum in embodiment 3 has optimal tensile strength and hardness.And pass through figure
It is found that the silicon of the embodiment is mutually fine and close and be uniformly distributed in 1, overall dimensions are more preferable to the invigoration effect of alloy within 50 μm.
Since to prepare silumin hardness weaker with intensity for spray forming technology, need to carry out it by heat treatment
Strengthen.The purpose of Aluminium Alloy Solution Treatment is to obtain solute and the dual oversaturated solid solution in vacancy, this oversaturated solid solution
Precipitation will occur in timeliness for body, form segregation area or the precipitated phase particle of solute atoms, and then cause the reinforcing of material.It is right
In being injected into the standby deformed silumin of densification of shape, solution treatment follows following principle: utmostly making to close
While various precipitated phase back dissolvings in gold, the fine grain feature of material is also kept as far as possible, inhibit the generation of recrystallization.It avoids
Material burning.The supersaturated solid solution that solution hardening obtains postbacks raw timeliness precipitation, precipitation strength in the case where heat temperature raising
It mutually precipitates, causes significantly improving for strength of materials hardness.By obtaining maximum strength character under the conditions of T6 peak timeliness.It utilizes
The heat treatment process of timeliness after solid solution improves surface hardness and tensile property, convenient for materials such as substitution steels, mitigates component weight
Amount.
It should also be appreciated by one skilled in the art that various illustrative logical boxs, mould in conjunction with the embodiments herein description
Electronic hardware, computer software or combinations thereof may be implemented into block, circuit and algorithm steps.In order to clearly demonstrate hardware and
Interchangeability between software surrounds its function to various illustrative components, frame, module, circuit and step above and carries out
It is generally described.Hardware is implemented as this function and is also implemented as software, depends on specific application and to entire
The design constraint that system is applied.Those skilled in the art can be directed to each specific application, be realized in a manner of flexible
Described function, still, this realization decision should not be construed as a departure from the scope of protection of this disclosure.
Claims (9)
1. a kind of System of Silica/Aluminum Microparticle alloy, which is characterized in that the mass percentage composition of the silico-aluminum element are as follows: Si 23-
27%, Mg 0.8-1.2%, Cu 3.5-4.5%, Fe≤0.4%, surplus Al.
2. a kind of System of Silica/Aluminum Microparticle alloy according to claim 1, which is characterized in that the quality percentage of the silico-aluminum element
Than composition are as follows: Si 23%, Mg 0.8%, Cu 34.5%, Fe 0.4%, surplus Al.
3. a kind of System of Silica/Aluminum Microparticle alloy according to claim 1, which is characterized in that the quality percentage of the silico-aluminum element
Than composition are as follows: Si 27%, Mg 1.2%, Cu 4.5%, Fe 0.1%, surplus Al.
4. a kind of System of Silica/Aluminum Microparticle alloy according to claim 1, which is characterized in that the quality percentage of the silico-aluminum element
Than composition are as follows: Si 25%, Mg 1.0%, Cu 4.0%, Fe 0.2%, surplus Al.
5. a kind of preparation method of System of Silica/Aluminum Microparticle alloy, which comprises the steps of:
Silico-aluminum elements Si, Mg, Cu, Fe, the Al carry out injection forming in proportion, obtain first product；
First product is subjected to the heat treatment of T6 state and obtains finished product.
6. a kind of preparation method of System of Silica/Aluminum Microparticle alloy according to claim 5, which is characterized in that the step of T6 state heat treatment
Suddenly include:
1-4h is kept the temperature lower than burnt temperature；
Water cooling；
High-temperature aging 12-36h is carried out, finished product is obtained.
7. a kind of preparation method of System of Silica/Aluminum Microparticle alloy according to claim 6, which is characterized in that be lower than burnt temperature
10-40℃。
8. a kind of preparation method of System of Silica/Aluminum Microparticle alloy according to claim 7, which is characterized in that described to be lower than burning temperature
The volume of the duration and first product of spending heat preservation is positively correlated.
9. a kind of preparation method of System of Silica/Aluminum Microparticle alloy according to claim 8, which is characterized in that when the progress high temperature
The duration of effect and the volume of first product are positively correlated.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110315242A (en) * | 2019-05-17 | 2019-10-11 | 江苏豪然喷射成形合金有限公司 | A kind of preparation method of Novel super-thin grained aluminium alloy welding wire |
| CN110643861A (en) * | 2019-10-08 | 2020-01-03 | 佛山科学技术学院 | Heat-conducting aluminum alloy and preparation process thereof |
| CN113718140A (en) * | 2021-08-18 | 2021-11-30 | 江苏豪然喷射成形合金有限公司 | Ultrahigh-performance spray-formed aluminum-silicon-iron-nickel-vanadium alloy and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110315242A (en) * | 2019-05-17 | 2019-10-11 | 江苏豪然喷射成形合金有限公司 | A kind of preparation method of Novel super-thin grained aluminium alloy welding wire |
| CN110643861A (en) * | 2019-10-08 | 2020-01-03 | 佛山科学技术学院 | Heat-conducting aluminum alloy and preparation process thereof |
| CN110643861B (en) * | 2019-10-08 | 2021-07-13 | 佛山科学技术学院 | Heat-conducting aluminum alloy and preparation process thereof |
| CN113718140A (en) * | 2021-08-18 | 2021-11-30 | 江苏豪然喷射成形合金有限公司 | Ultrahigh-performance spray-formed aluminum-silicon-iron-nickel-vanadium alloy and preparation method thereof |
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