热处理对WE43镁合金显微组织和力学性能的影响

王征远; 秦守益; 王先飞; 余国康; 何凯; 曾柏栋; 陈加运; 蒋李超; 吴晓松; 王林

doi:10.15980/j.tzzz.2021.03.022

研究·合金工艺 | 浏览量 : 0 下载量: 51 CSCD: 0

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热处理对WE43镁合金显微组织和力学性能的影响
Influence of Heat Treatment on Microstructure and Properties of WE43 Magnesium Alloy
2021年41卷第3期页码：364-367
纸质出版日期： 2021 ，
DOI： 10.15980/j.tzzz.2021.03.022

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[1]王征远,秦守益,王先飞,余国康,何凯,曾柏栋,陈加运,蒋李超,吴晓松,王林.热处理对WE43镁合金显微组织和力学性能的影响[J].特种铸造及有色合金,2021,41(03):364-367.

Wang Zhengyuan, Qin Shouyi, Wang Xianfei, et al. Influence of Heat Treatment on Microstructure and Properties of WE43 Magnesium Alloy[J]. Special Casting & Nonferrous Alloys, 2021,41(3):364-367.
[1]王征远,秦守益,王先飞,余国康,何凯,曾柏栋,陈加运,蒋李超,吴晓松,王林.热处理对WE43镁合金显微组织和力学性能的影响[J].特种铸造及有色合金,2021,41(03):364-367. DOI： 10.15980/j.tzzz.2021.03.022.

Wang Zhengyuan, Qin Shouyi, Wang Xianfei, et al. Influence of Heat Treatment on Microstructure and Properties of WE43 Magnesium Alloy[J]. Special Casting & Nonferrous Alloys, 2021,41(3):364-367. DOI： 10.15980/j.tzzz.2021.03.022.

摘要

采用低压铸造制备了WE43镁合金

使用OM、SEM、EDS研究了热处理前后合金的显微组织及元素分布情况

并对其力学性能进行测试

分析热处理对其力学性能的影响。结果表明

WE43镁合金铸态组织主要由α-Mg基体和晶界上的Mg

共晶相组成。经过520℃×10h+225℃×14h热处理后

WE43镁合金主要由α-Mg基体、方块相团簇、少量残余Mg

共晶相及针状的时效析出相组成。与铸态合金相比

热处理后WE43镁合金的抗拉强度和屈服强度显著提高

分别达到305.9 MPa和191.8 MPa

但伸长率下降至3.1%。

Abstract

The WE43 magnesium alloy was prepared by low-pressure die casting.The microstructure of WE43 magnesium alloy before and after heat treatment was observed by optical microscope

scanning electron microscope and energy dispersive spectroscopy.The effects of heat treatment process on mechanical properties of WE43 alloy were also analyzed.The results show that the as-cast microstructure of the alloy is composed of primaryα-Mg and eutectic phase with Mg

.With the heat treatment of 520℃×10 h+225℃×14 h

the microstructure of the alloy is composed of primaryα-Mg

cluster of square phase

residual eutectic phase with Mg

and aging precipitation phase.By heat treatment

the tensile strength and yield strength of the alloy are increased to305.9 MPa and 191.8 MPa

respectively

and the elongation is decreased to 3.1%.