Effect of thermal exposure on the microstructure and creep properties of a fourth-generation Ni-based single crystal superalloy

doi:10.1016/j.jmst.2020.07.008

IMR OpenIR

	Effect of thermal exposure on the microstructure and creep properties of a fourth-generation Ni-based single crystal superalloy
	Huang, Yeshun 1,2; Wang, Xinguang 1; Cui, Chuanyong 1; Tan, Zihao 1; Li, Jinguo 1; Yang, Yanhong 1; Liu, Jinlai 1; Zhou, Yizhou 1; Sun, Xiaofeng 1
通讯作者	Wang, Xinguang(xgwang11b@imr.ac.cn) ; Cui, Chuanyong(chycui@imr.ac.cn) ; Sun, Xiaofeng(xfsun@imr.ac.cn)
	2021-04-10
发表期刊	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN	1005-0302
卷号	69 页码:180-187
摘要	The effect of thermal exposure on microstructure and creep properties of a fourth-generation nickel-based single crystal superalloy was investigated. The thermal exposure of samples after the full heat treatment was carried out at 1000 degrees C,1100 degrees C and 1140 degrees C for 100 h and 200 h. The gamma' coarsening, gamma' rafting and gamma channel widening were observed in samples after thermal exposure. When the thermal exposure time was constant, the morphology of gamma' phase in the alloy evolved significantly with increasing aging temperature. The interfacial dislocation networks in aged samples after creep ruptured gradually became irregular and sparse with the increase of exposure temperature. When the higher exposure temperature was used, enlargement of the defect pores was observed in samples, the microcracks were more likely to initiate and propagate at the corner of these pores. After aging at 1000 degrees C for 100 h, the creep life at 1140 degrees C/137 MPa was slightly longer than that of heat-treated sample, which could be attributed to the slightly coarsened gamma' phase, homogenization of refractor elements. In contrast, the creep life of sample exposed at 1140 degrees C for 100 h was greatly decreased. The decrease of creep life was dominated by the rafting of gamma' phase, the irregular interfacial dislocation networks as well as the enlargement of homogenization pores. (C) 2021 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
关键词	Ni-based single crystal superalloys Thermal exposure Microstructural evolution Creep properties Porosity
资助者	National Science and Technology Major Project ; National Key R&D Program of China ; National Natural Science Foundation of China ; State Key Lab of Advanced Metals and Materials Open Fund ; Youth Innovation Promotion Association
DOI	10.1016/j.jmst.2020.07.008
收录类别	SCI
语种	英语
资助项目	National Science and Technology Major Project[2017-VI-0002-0072] ; National Key R&D Program of China[2017YFA0700704] ; National Natural Science Foundation of China[51601192] ; National Natural Science Foundation of China[51671188] ; State Key Lab of Advanced Metals and Materials Open Fund ; Youth Innovation Promotion Association
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000620808800020
出版者	JOURNAL MATER SCI TECHNOL
引用统计	被引频次：25[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/321006/160990
专题	中国科学院金属研究所
通讯作者	Wang, Xinguang; Cui, Chuanyong; Sun, Xiaofeng
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
推荐引用方式 GB/T 7714	Huang, Yeshun,Wang, Xinguang,Cui, Chuanyong,et al. Effect of thermal exposure on the microstructure and creep properties of a fourth-generation Ni-based single crystal superalloy[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2021,69:180-187.
APA	Huang, Yeshun.,Wang, Xinguang.,Cui, Chuanyong.,Tan, Zihao.,Li, Jinguo.,...&Sun, Xiaofeng.(2021).Effect of thermal exposure on the microstructure and creep properties of a fourth-generation Ni-based single crystal superalloy.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,69,180-187.
MLA	Huang, Yeshun,et al."Effect of thermal exposure on the microstructure and creep properties of a fourth-generation Ni-based single crystal superalloy".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 69(2021):180-187.