王亮,门正兴,陈雯,吉辰,廖若冰,马亚鑫,王秋林,汪晓龙,朱亮,李坤

• 1:成都航空职业技术学院
• 2:重庆大学高端装备机械传动全国重点实验室
• 3:高性能结构增材制造重庆市重点实验室
• 4:潍柴动力空气净化科技有限公司

摘要(Abstract)：

激光粉末床熔融(LPBF)制备WE43镁合金材料，虽然可以快速成形复杂形状零件，但不均匀的残余应力和孔隙率，限制了LPBF镁合金的力学性能。后期热处理是解决该问题的有效方法之一。研究了两种热处理工艺对LPBF制备的WE43镁合金力学性能和微观组织的影响。结果表明：经425和525℃固溶和200和250℃时效处理后，六方晶粒织构的基面开始趋于平行沉积平面，取向开始显现。随着固溶与时效温度的升高，合金的晶粒开始重组、尺寸增大，室温抗拉强度降低，200℃原位拉伸时的抗拉强度更低，塑性逐渐增强。合金的室温拉伸断口形貌呈现脆性与韧性混合断裂特征，200℃原位拉伸断口呈现韧性断裂特征。

关键词(KeyWords)： 激光粉末床熔融;固溶时效;织构;力学性能

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(52201105);; 重庆市留学回国人员创业创新支持计划项目(cx2023061);; 四川省自然科学基金项目(2023NSFSC0407)

作者(Author): 王亮,门正兴,陈雯,吉辰,廖若冰,马亚鑫,王秋林,汪晓龙,朱亮,李坤

DOI: 10.13289/j.issn.1009-6264.2024-0242

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