Effects of 1 at.% Ta substitution for 1 at.% W on the coarsening kinetics and deformation behavior of gamma'-strengthened CoNi-base superalloys

doi:10.1016/j.msea.2021.141776

IMR OpenIR

	Effects of 1 at.% Ta substitution for 1 at.% W on the coarsening kinetics and deformation behavior of gamma'-strengthened CoNi-base superalloys
	Qu, Shasha 1,2; Li, Yingju 1; Tong, Min 1; Wang, Cuiping 3,4; Yang, Yuansheng 1
通讯作者	Li, Yingju(yjli@imr.ac.cn) ; Yang, Yuansheng(ysyang@imr.ac.cn)
	2021-08-17
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	823 页码:11
摘要	The coarsening behavior of the gamma' precipitates and compression deformation mechanism of the gamma'-strengthened CoNi-base superalloys are investigated. By substituting 1 at.% Ta for 1 at.% W, the 4W2Ta alloy exhibits a higher gamma' solvus temperature of 1218 degrees C and a lower mass density of 8.93 g/cm3. During the aging process from 900 to 1000 degrees C, both of the 5W1Ta and 4W2Ta alloys show stable gamma/gamma' two-phase microstructure. The coarsening behavior of the gamma' precipitates in the two alloys follows the classical Lifshitz-Slyozov-Wagner (LSW) model. The coarsening rate constant of the 4W2Ta alloy is approximately two times lower than that of the 5W1Ta alloy, which is attributed to its larger lattice mismatch due to the addition of Ta. Besides, compared with the 5W1Ta alloy, the 4W2Ta alloy has higher high-temperature strength and shows different deformation behavior. When the deformation temperature is lower than 800 degrees C, pairs of dislocations shear the gamma' precipitates and gamma matrix. At 800 degrees C, stacking faults (SFs) appear in the gamma' precipitates and increase with the increasing temperature, whereas most of dislocations bypass the gamma' precipitates at 1000 degrees C.
关键词	CoNi-Base superalloy Microstructural evolution Coarsening kinetics Compression deformation Dislocation structure
资助者	National Natural Science Foundation of China ; National Science and Technology Major Project ; Key Research and Development Program of Liaoning Province
DOI	10.1016/j.msea.2021.141776
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51831007] ; National Science and Technology Major Project[2017-VI-0003-0073] ; Key Research and Development Program of Liaoning Province[2019JH2/10100009]
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:000682358100003
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：8[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/321006/159560
专题	中国科学院金属研究所
通讯作者	Li, Yingju; Yang, Yuansheng
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.Xiamen Univ, Coll Mat, Xiamen 361005, Peoples R China 4.Xiamen Univ, Fujian Prov Key Lab Mat Genome, Xiamen 361005, Peoples R China
推荐引用方式 GB/T 7714	Qu, Shasha,Li, Yingju,Tong, Min,et al. Effects of 1 at.% Ta substitution for 1 at.% W on the coarsening kinetics and deformation behavior of gamma'-strengthened CoNi-base superalloys[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2021,823:11.
APA	Qu, Shasha,Li, Yingju,Tong, Min,Wang, Cuiping,&Yang, Yuansheng.(2021).Effects of 1 at.% Ta substitution for 1 at.% W on the coarsening kinetics and deformation behavior of gamma'-strengthened CoNi-base superalloys.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,823,11.
MLA	Qu, Shasha,et al."Effects of 1 at.% Ta substitution for 1 at.% W on the coarsening kinetics and deformation behavior of gamma'-strengthened CoNi-base superalloys".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 823(2021):11.