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High-performance light magnesium-based alloy material and preparation method thereof

A technology based on alloys and light magnesium, which is applied in the field of metal material processing, can solve problems such as the difficulty in balancing the mechanical properties and structural properties of rare earth elements, affecting the strength and plasticity of material alloys, and the safety of high-risk experiments, so as to achieve organizational optimization. , uniform organization, and the effect of avoiding safety risks

Inactive Publication Date: 2021-09-07
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, although adding a higher content of rare earth elements helps to improve the room temperature strength and plasticity of magnesium alloy materials, it is easy to cause problems such as solidification segregation and uneven structure, and due to the hereditary nature of the metal structure, it seriously affects the alloy strength of the material. and plasticity
It can be seen that for magnesium alloy materials, the alloying of rare earth elements is bound to have the problem of difficult balance between the mechanical properties of the material and the structural properties of the material.
In addition, the rapid solidification technology represented by powder metallurgy also has high risk experimental safety problems in the process of preparing magnesium and alloy powders, which provides new challenges for the development of high-performance rare earth magnesium alloy materials and their processes

Method used

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  • High-performance light magnesium-based alloy material and preparation method thereof
  • High-performance light magnesium-based alloy material and preparation method thereof
  • High-performance light magnesium-based alloy material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0033] This embodiment of the high performance (uniform tissue, excellent mechanical properties) preparation of magnesium-based light alloy material, including mother alloy melting, rapid solidification step Tissue Preparation, spark plasma sintering, comprises:

[0034](1) Configuration mother alloy composition: composition according to the mother alloy to be synthesized is performed Mg-15Gd-1Zn (percent by mass wt%) of ingredients, melting the master alloy is cast alloy by resistance heating furnace smelting, specific: first, the total amount of the ingredients 60wt% magnesium, Mg-Gd master alloy ingot into a stainless steel material or a graphite crucible, crucible, and placed in a resistance heating furnace, the temperature was raised to 740 ℃, incubated 5min, until the starting material melted, then all of the remaining 40wt% of raw material charging into a crucible, and continue to heat up to 720 ℃ incubated 10min, followed by sufficient stirring and the solution was allowed...

Embodiment 2

[0039] This embodiment of the high performance (uniform tissue, excellent mechanical properties) preparation of magnesium-based light alloy material, including mother alloy melting, rapid solidification step Tissue Preparation, spark plasma sintering, comprises:

[0040] (1) Configuration mother alloy composition: composition according to the mother alloy to be synthesized Mg-6Gd-5Zn (percent by mass) as compounding, melting of the master alloy is cast alloy by resistance heating furnace smelting, specifically: First, 70wt% of the total amount of the ingredients of magnesium, Mg-Gd master alloy ingot into a stainless steel material or a graphite crucible, crucible, and placed in a resistance heating furnace, the temperature was raised to 720 ℃, incubated 5min, until the raw material is melted, then the remaining 30wt% of all raw materials put into the crucible, and continue to heat up to 720 ℃ incubated 10min, followed by sufficient stirring and the solution was allowed to stand 3...

Embodiment 3

[0045] This embodiment of the high performance (uniform tissue, excellent mechanical properties) preparation of magnesium-based light alloy material, including mother alloy melting, rapid solidification step Tissue Preparation, spark plasma sintering, comprises:

[0046] (1) Configuration mother alloy composition: composition according to the mother alloy to be synthesized Mg-10Gd-2Zn (percent by mass) as compounding, melting of the master alloy is cast alloy by resistance heating furnace smelting, specifically: First, 50wt% of the total amount of the ingredients of magnesium, Mg-Gd master alloy ingot into a stainless steel material or a graphite crucible, crucible, and placed in a resistance heating furnace, the temperature was raised to 730 ℃, incubated 5min, until the raw material is melted, then the remaining 40wt% of all raw materials put into the crucible, and continue to heat up to 720 ℃ incubated 10min, followed by sufficient stirring and the solution was allowed to stand ...

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Abstract

The invention belongs to the technical field of metal material machining, and particularly relates to a high-performance light magnesium-based alloy material and a preparation method thereof. According to the preparation method of the high-performance light magnesium-based alloy material, on the basis of cooperative strengthening of multiple modes of solid solution strengthening, second phase strengthening, fine grain strengthening and the like, through the steps of mother alloy cast ingot smelting, rapid solidification thin strip preparation, spark plasma low-temperature sintering and the like, strip spraying process parameters and sintering process parameters are mainly adjusted, structure optimization can be better achieved on the basis that segregation is reduced, a magnesium alloy block which is very uniform in structure, greatly reduced in segregation and excellent in comprehensive mechanical performance such as strength, plasticity and the like is prepared, and the magnesium alloy block meets the performance requirements of materials in the fields of traffic and spaceflight.

Description

Technical field [0001] The present invention is a rare earth element metal belonging to the field of materials processing technology, particularly relates to a high-performance lightweight magnesium-based alloy material and its preparation method, and more particularly relates to a solute content of more rapid solidification principle and sintered to reduce segregation preparation of high-performance alloys. Background technique [0002] Due to the magnesium alloy material having a small density, is excellent in castability, high damping, thermal conductivity and good heat dissipation, better recyclability, abundant resources, etc., is the lightest metal structural material, known as "green engineering materials in the 21st century." However, the absolute magnesium, and the mechanical properties of materials is not ideal, especially low room-temperature strength and room temperature ductility, and corrosion resistance difference drawbacks such as poor, severely limited in its wei...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/06B22F9/04B22F3/105C22C1/03B22D11/06
CPCC22C23/06B22F9/04B22F3/105C22C1/03B22D11/0611B22D11/001B22F2009/048B22F2003/1051
Inventor 韩修柱罗文博薛志勇许焕宾
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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