Effects of Ta on microstructural stability and mechanical properties of hot corrosion resistant Ni-based single crystal superalloys during long-term thermal exposure

doi:10.1016/j.msea.2021.140829

IMR OpenIR

	Effects of Ta on microstructural stability and mechanical properties of hot corrosion resistant Ni-based single crystal superalloys during long-term thermal exposure
	Wu, Junjie 1,2; Jiang, Xiangwei 1; Wang, Yao 1; Dong, Jiasheng 1; Lou, Langhong 1
通讯作者	Jiang, Xiangwei(xwjiang@imr.ac.cn)
	2021-03-04
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	806 页码:10
摘要	The effects of Ta on microstructural stability and mechanical properties of hot corrosion resistant Ni-based single crystal superalloys during long-term thermal exposure at 900 degrees C were investigated in the present study by comparing two experimental alloys with different content of Ta (6Ta and 6.7Ta). The results indicated that the addition of extra 0.7Ta increased the volume fraction of the gamma' precipitates and accelerated the coarsening rate of gamma' precipitates, facilitated the formation of misfit dislocation and precipitation of sigma phases. The 6.7Ta alloy exhibited higher hardness and better stress rupture properties than 6Ta and the variations of stress rupture properties during the exposure for 6Ta and 6.7Ta alloy are significantly different. The effects of gamma' coarsening, formation of sigma phases and misfit dislocations were taken into consideration to identify the reasons of variations of mechanical properties during the thermal exposure.
关键词	Single crystal superalloy Microstructural stability Stress rupture properties
资助者	National Science and Technology Major Project ; National Natural Science Foundation of China
DOI	10.1016/j.msea.2021.140829
收录类别	SCI
语种	英语
资助项目	National Science and Technology Major Project[-0008-0101] ; National Natural Science Foundation of China[51674235] ; National Natural Science Foundation of China[91860201] ; National Natural Science Foundation of China[51631008]
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000620936000002
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：34[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/321006/161116
专题	中国科学院金属研究所
通讯作者	Jiang, Xiangwei
作者单位	1.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, 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	Wu, Junjie,Jiang, Xiangwei,Wang, Yao,et al. Effects of Ta on microstructural stability and mechanical properties of hot corrosion resistant Ni-based single crystal superalloys during long-term thermal exposure[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2021,806:10.
APA	Wu, Junjie,Jiang, Xiangwei,Wang, Yao,Dong, Jiasheng,&Lou, Langhong.(2021).Effects of Ta on microstructural stability and mechanical properties of hot corrosion resistant Ni-based single crystal superalloys during long-term thermal exposure.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,806,10.
MLA	Wu, Junjie,et al."Effects of Ta on microstructural stability and mechanical properties of hot corrosion resistant Ni-based single crystal superalloys during long-term thermal exposure".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 806(2021):10.