Anisotropic Mechanical Behavior of AlSi10Mg Parts Produced by Selective Laser Melting

被引：101
|
作者：
Tang, Ming [1 ]
Pistorius, Petrus Christiaan [1 ]
机构：
[1] Carnegie Mellon Univ, Dept Mat Sci & Engn, 5000 Forbes Ave, Pittsburgh, PA 15213 USA
来源：
JOM | 2017年 / 69卷 / 03期
关键词：
DUCTILE FRACTURE; ALLOY; TI-6AL-4V; EVOLUTION;
D O I：
10.1007/s11837-016-2230-5
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
AlSi10Mg cylinders produced by laser powder-bed fusion have somewhat different yield behavior for cylinders with XY orientation and Z orientation. Earlier yielding for Z-oriented samples is likely related to micro-residual stress, resulting from the difference in thermal expansion of the aluminum matrix and cellular silicon. Smaller tensile reduction in area of Z-oriented samples is related to tearing along the softer region at the boundaries of melt pools, where the silicon cell spacing is larger. Indentation measurements confirmed the lower hardness at the edges of melt pools.
引用
收藏
页码：516 / 522
页数：7
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