Effects of hot isostatic pressing and heat treatment process on microstructure and tensile properties of selective laser melting manufactured GH4169alloy

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	Effects of hot isostatic pressing and heat treatment process on microstructure and tensile properties of selective laser melting manufactured GH4169alloy
	Shi Lei; Lei Liming; Wang Wei; Fu Xin; Zhang Guangping
	2020-07-12
发表期刊	Journal of Materials Engineering
卷号	48 期号:6 页码:148-155
摘要	GH4169alloys were manufactured by selective laser melting(SLM).The microstructure evolution and tensile properties of GH4169alloys during hot isostatic pressing(HIP)and heat treatment(HT)process were analyzed by OM,SEM,EBSD and TEM.The results show that the grains of the as-deposited samples in the building direction are columnar,exhibit very fine cellulardendritic structure with fine Laves phases precipitating in the interdendritic region.Most of porosities and Laves phases disappear after HIP,and the microstructure parallel to the building direction is transformed into equiaxed grains.Short rod-likedeltaphases are precipitated along grain boundaries after annealing at 980℃for 1h.The tensile properties at room temperature and 650℃of specimens after HIP and HT are higher than those of the standard requirements for the forgings,and the temperature has a little influence on the fracture mode.
WOS记录号	CSCD:6748769
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/155695
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Shi Lei,Lei Liming,Wang Wei,et al. Effects of hot isostatic pressing and heat treatment process on microstructure and tensile properties of selective laser melting manufactured GH4169alloy[J]. Journal of Materials Engineering,2020,48(6):148-155.
APA	Shi Lei,Lei Liming,Wang Wei,Fu Xin,&Zhang Guangping.(2020).Effects of hot isostatic pressing and heat treatment process on microstructure and tensile properties of selective laser melting manufactured GH4169alloy.Journal of Materials Engineering,48(6),148-155.
MLA	Shi Lei,et al."Effects of hot isostatic pressing and heat treatment process on microstructure and tensile properties of selective laser melting manufactured GH4169alloy".Journal of Materials Engineering 48.6(2020):148-155.