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Microstructure evolution and tensile property of a first-generation single crystal superalloy fabricated by laser melting deposition
Wang,Guowei1,2; Shen,Xianfeng1; Yang,Jialin1; Liang,Jingjing2; Zhou,Yizhou2; Sun,Xiaofeng2
2020-07-01
Source PublicationMaterials Research Express
Volume7Issue:7
AbstractAbstract 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.
KeywordSRR99 single crystal superalloy laser deposition
DOI10.1088/2053-1591/aba398
Language英语
WOS IDIOP:2053-1591-7-7-aba398
PublisherIOP Publishing
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/80665
Affiliation1.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
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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