挤压铸造和热处理对WE43镁合金组织与性能的影响

石文静; 卞健从; 姜磊; 李硕敏; 郑黎; 于宝义; 袁晓光; 李润霞

doi:10.15980/j.tzzz.2019.05.030

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挤压铸造和热处理对WE43镁合金组织与性能的影响
Effects of Squeeze Casting and Heat Treatment on Microstructures and Properties of WE43 Alloy
2019年39卷第5期页码：572-576
纸质出版日期： 2019 ，
DOI： 10.15980/j.tzzz.2019.05.030

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[1]石文静,卞健从,姜磊,李硕敏,郑黎,于宝义,袁晓光,李润霞.挤压铸造和热处理对WE43镁合金组织与性能的影响[J].特种铸造及有色合金,2019,39(05):572-576.

Shi Wenjing, Bian Jiancong, Jiang Lei, et al. Effects of Squeeze Casting and Heat Treatment on Microstructures and Properties of WE43 Alloy[J]. Special Casting & Nonferrous Alloys, 2019,39(5):572-576.
[1]石文静,卞健从,姜磊,李硕敏,郑黎,于宝义,袁晓光,李润霞.挤压铸造和热处理对WE43镁合金组织与性能的影响[J].特种铸造及有色合金,2019,39(05):572-576. DOI： 10.15980/j.tzzz.2019.05.030.

Shi Wenjing, Bian Jiancong, Jiang Lei, et al. Effects of Squeeze Casting and Heat Treatment on Microstructures and Properties of WE43 Alloy[J]. Special Casting & Nonferrous Alloys, 2019,39(5):572-576. DOI： 10.15980/j.tzzz.2019.05.030.

摘要

研究了挤压铸造和热处理对WE43镁合金显微组织与力学性能的影响。结果表明

挤压铸造使合金的晶粒细化

粗大的网状Mg-Y-Nd相细化

合金的性能得到提高

合金的抗拉强度、屈服强度和伸长率分别为181 MPa、152 MPa和7.62%。随着时效时间增加

粒状的Mg24Y5相沿晶界弥散分布

时效14h时

合金的抗拉强度和屈服强度达到峰值

分别为297MPa和280MPa。225℃时效16h时

晶界上析出粗大的Mg-Y-Nd相

合金的性能下降。

Abstract

The effects of squeeze casting and heat treatment on microstructures and mechanical properties of the WE43 magnesium alloy were investigated.The results show that squeeze casting can refine the grain size in the alloy and the coarse Mg-Y-Nd phases

improving the properties of the alloy

where the tensile strength

yield strength and elongation reach 181 MPa

152 MPa and 7.62%

respectively.With the increase of aging time

the granular Mg24Y5 phases are dispersedly distributed along grain boundaries.The tensile strength and yield strength of the alloy reach 297 MPa and 280 MPa

respectively

at 14 h.After aging treatment for 16 h

coarse Mg-Y-Nd phase is precipitated at grain boundaries

and the properties of the alloy is decreased.