Effects of Ta and Co on Microstructural Stability of Novel High Strength and Hot-Corrosion Resistant Nickel Based Single Crystal Superalloys

doi:10.12442/j.issn.1002-185X.20230115

IMR OpenIR

	Effects of Ta and Co on Microstructural Stability of Novel High Strength and Hot-Corrosion Resistant Nickel Based Single Crystal Superalloys
	Lai Yongjun 1,2; Ning Likui 1; Zhao Ling 3; Liu Yichuan 1,2; Liu Enze 1; Tan Zheng 1,2; Li Haiying 1; Tong Jian 1; Zheng Zhi 1
通讯作者	Ning Likui(lkning@imr.ac.cn)
	2024-03-01
发表期刊	RARE METAL MATERIALS AND ENGINEERING
ISSN	1002-185X
卷号	53 期号:3 页码:748-756
摘要	The microstructure of hot-corrosion resistant single crystal superalloy with different Ta and Co contents and the microstructure stability during long-term aging at 1000 degrees C. was investigated. The results show that in the single crystal superalloy of the experiment, the dissolution temperature of gamma' phase increases with the increase in Ta content, the size of gamma' phase first increases and then decreases after complete heat treatment. The dissolution temperature of gamma' phase decreases and the size of gamma' phase and the content of gamma' phase reduce with the increase in Co content. During the long-term aging process at 1000 degrees C, the coarsening rate of gamma' phase first decreases and then increases with the increase in Ta content, while the coarsening rate of gamma' phase decreases with the increase in Co content. The mismatch degree of gamma/gamma' phase and the diffusion of elements in matrix are the main factors affecting the coarsening rate of gamma' phase in the four alloys. In addition, Ta increases the content of gamma' phase, promotes the distribution of Re, W, Mo and Cr toward gamma matrix, and promotes the precipitation of tcp phase, while Co reduces the distribution of Re, W, Mo and Cr in gamma matrix, reduces the supersaturation of matrix and inhibits the precipitation of tcp phase.
关键词	Ta Co hot-corrosion resistant single crystal superalloy microstructural stability
DOI	10.12442/j.issn.1002-185X.20230115
收录类别	SCI
语种	英语
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001252657300016
出版者	NORTHWEST INST NONFERROUS METAL RESEARCH
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/188181
专题	中国科学院金属研究所
通讯作者	Ning Likui
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Shenyang Res Inst Foundry Co Ltd, CAM, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Lai Yongjun,Ning Likui,Zhao Ling,et al. Effects of Ta and Co on Microstructural Stability of Novel High Strength and Hot-Corrosion Resistant Nickel Based Single Crystal Superalloys[J]. RARE METAL MATERIALS AND ENGINEERING,2024,53(3):748-756.
APA	Lai Yongjun.,Ning Likui.,Zhao Ling.,Liu Yichuan.,Liu Enze.,...&Zheng Zhi.(2024).Effects of Ta and Co on Microstructural Stability of Novel High Strength and Hot-Corrosion Resistant Nickel Based Single Crystal Superalloys.RARE METAL MATERIALS AND ENGINEERING,53(3),748-756.
MLA	Lai Yongjun,et al."Effects of Ta and Co on Microstructural Stability of Novel High Strength and Hot-Corrosion Resistant Nickel Based Single Crystal Superalloys".RARE METAL MATERIALS AND ENGINEERING 53.3(2024):748-756.