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	Effects of vacuum annealing treatment on microstructures and residual stress of AlSi10Mg parts produced by selective laser melting process
	Chen, Tian; Wang, Linzhi; Tan, Sheng
	2016-07-20
摘要	Selective laser melting (SLM)-fabricated AlSi10Mg parts were heat-treated under vacuum to eliminate the residual stress. Microstructure evolutions and tensile properties of the SLM-fabricated parts before and after vacuum annealing treatment were studied. The results show that the crystalline structure of SLM-fabricated AlSi10Mg part was not modified after the vacuum annealing treatment. Additionally, the grain refinement had occurred after the vacuum annealing treatment. Moreover, with increasing of the vacuum annealing time, the second phase increased and transformed to spheroidization and coarsening. The SLM-produced parts after vacuum annealing at 300 degrees C for 2 h had the maximum ultimate tensile strength (UTS), yield strength (YS) and elongation, while the elastic modulus decreased significantly. In addition, the tensile residual stress was found in the as -fabricated AlSi10Mg samples by the microindentation method.
关键词	Heat treatment microstructures tensile properties residual stress selective laser melting
DOI	10.1142/S0217984916502559
发表期刊	MODERN PHYSICS LETTERS B
ISSN	0217-9849
卷号	30期号:19页码:13
收录类别	SCI
WOS记录号	WOS:000381343800015
语种	英语