Microstructure evolution and tensile property of a first-generation single crystal superalloy fabricated by laser melting deposition

doi:10.1088/2053-1591/aba398

IMR OpenIR

	Microstructure evolution and tensile property of a first-generation single crystal superalloy fabricated by laser melting deposition
	Wang, Guowei; Shen, Xianfeng; Yang, Jialin; Liang, Jingjing; Zhou, Yizhou; Sun, Xiaofeng
	2020-07-01
Source Publication	MATERIALS RESEARCH EXPRESS
Volume	7 Issue:7
Abstract	Additive manufacturing (AM) of single crystal superalloys has got some progress in recent researches, but there are few reports on eliminating recrystallization or mechanical properties of single crystal superalloys by AM. In this work, single-crystal samples of SRR99 were fabricated at high temperature by laser melting deposition (LMD). Owing to the high temperature of substrate in the deposition process, recrystallization in the following heat treatment process was eliminated. The contrast sample of SRR99 was prepared by directional solidification, and the microstructure evolution during heat treatment and tensile property of deposited samples were analyzed. The results showed that the shapes of the gamma ' phase became irregular after solution treatment in deposited samples. After a solid solution and aging treatment, the gamma ' phase size is larger and the gamma ' volume fraction is slightly lower in deposited samples than in the contrast sample. As a result, the yield and tensile strength of deposited samples are slightly lower than that of contrast samples, but the plasticity of deposited samples is better.
DOI	10.1088/2053-1591/aba398
WOS ID	WOS:000553760900001
Citation statistics
Document Type	期刊论文
Identifier	http://ir.imr.ac.cn/handle/321006/82722
Collection	中国科学院金属研究所
Recommended Citation GB/T 7714	Wang, Guowei,Shen, Xianfeng,Yang, Jialin,et al. Microstructure evolution and tensile property of a first-generation single crystal superalloy fabricated by laser melting deposition[J]. MATERIALS RESEARCH EXPRESS,2020,7(7).
APA	Wang, Guowei,Shen, Xianfeng,Yang, Jialin,Liang, Jingjing,Zhou, Yizhou,&Sun, Xiaofeng.(2020).Microstructure evolution and tensile property of a first-generation single crystal superalloy fabricated by laser melting deposition.MATERIALS RESEARCH EXPRESS,7(7).
MLA	Wang, Guowei,et al."Microstructure evolution and tensile property of a first-generation single crystal superalloy fabricated by laser melting deposition".MATERIALS RESEARCH EXPRESS 7.7(2020).

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