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

CORC > 金属研究所 > 中国科学院金属研究所

	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
刊名	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
	2021-03-04
卷号	806 页码:10
关键词	Single crystal superalloy Microstructural stability Stress rupture properties
ISSN号	0921-5093
DOI	10.1016/j.msea.2021.140829
通讯作者	Jiang, Xiangwei(xwjiang@imr.ac.cn)
英文摘要	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.
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
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000620936000002
资助机构	National Science and Technology Major Project ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/161115]
专题	金属研究所_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.