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 1,2; Shen,Xianfeng 1; Yang,Jialin 1; Liang,Jingjing 2; Zhou,Yizhou 2; Sun,Xiaofeng 2
	2020-07-01
发表期刊	Materials Research Express
卷号	7 期号:7
摘要	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 γ′ phase became irregular after solution treatment in deposited samples. After a solid solution and aging treatment, the γ′ phase size is larger and the γ′ 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.
关键词	SRR99 single crystal superalloy laser deposition
DOI	10.1088/2053-1591/aba398
语种	英语
WOS记录号	IOP:2053-1591-7-7-aba398
出版者	IOP Publishing
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/80667
专题	中国科学院金属研究所
作者单位	1.Institute of Machinery Manufacturing Technology, China Academy of Engineering Physics, Mianyang 621900, People’s Republic of China 2.Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, People’s Republic of China
推荐引用方式 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).