Anisotropy reduction of additively manufactured AlSi10Mg for metal mirrors

被引：9
作者：
Tan, Songnian [1 ,2 ,3 ]
Wang, Yefei [1 ,2 ,3 ]
Liu, Weiyi [1 ,3 ]
Wang, Hao [1 ,3 ]
Jia, Ping [1 ,3 ]
Ding, Yalin [1 ,3 ]
机构：
[1] Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, 3888 Southeast Lake Rd, Changchun 130033, Peoples R China
[2] Univ Chinese Acad Sci, Yuquan Rd, Beijing 100049, Peoples R China
[3] Chinese Acad Sci, Key Lab Airborne Opt Imaging & Measurement, 3888 Southeast Lake Rd, Changchun 130033, Peoples R China
来源：
JOURNAL OF MATERIALS SCIENCE | 2022年 / 57卷 / 25期
关键词：
LASER MELTING SLM; MECHANICAL-PROPERTIES; RESIDUAL-STRESSES; ALLOY PROCESS; MICROSTRUCTURE; PARTS;
D O I：
10.1007/s10853-022-07080-4
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In light of the rapid development of additive manufacturing technologies, this study explores the additive manufacturing of an AlSi10Mg mirror for potential application in aerospace engineering. An additively manufactured mirror consisting of AlSi10Mg must demonstrate high-dimensional stability to maintain its surface accuracy. This study investigates the origin of the anisotropy of AlSi10Mg, fabricated by selective laser melting (SLM), by analyzing its microstructure using metallographic microscopy and scanning electron microscopy. The microstructure of AlSi10Mg fabricated by SLM is analyzed relative to the build and scan directions. In addition, the effect of heat treatment on the microstructure, inherent anisotropy, tensile strength, elongation, hardness, and thermal expansion of AlSi10Mg fabricated by SLM is studied. Heat treatment effectively reduces the inherent anisotropy of AlSi10Mg fabricated by SLM. Moreover, the surface accuracy of a heat-treated, additively manufactured mirror consisting of AlSi10Mg is stable, that is, minimally affected by thermal cycling. This study can inform further research on dimensionally stable, additively manufactured AlSi10Mg parts and the development of metal mirrors.
引用
收藏
页码：11934 / 11948
页数：15
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