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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 PublicationMATERIALS RESEARCH EXPRESS
Volume7Issue:7
AbstractAdditive 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.
DOI10.1088/2053-1591/aba398
WOS IDWOS:000553760900001
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Document Type期刊论文
Identifierhttp://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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