Creep deformation behavior of the Ni-Fe-based GH984G alloy

doi:10.1016/j.msea.2022.143819

IMR OpenIR

	Creep deformation behavior of the Ni-Fe-based GH984G alloy
	Wu, Yunsheng 1,2; Zhang, Xiangxiang 1,3; Wang, Changshuai 1,2; Qin, Xuezhi 1,2; Hou, Jieshan 1,2; Zhou, Lanzhang 1,2
通讯作者	Zhou, Lanzhang(lzz@imr.ac.cn)
	2022-09-27
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	854 页码:9
摘要	The creep deformation behavior and microstructure evolution of the Ni-Fe-based GH984G alloy were investigated at temperatures of 700 ?-775 ?, with the stress ranging from 150 MPa to 400 MPa. The results demonstrate that the apparent stress exponent and apparent creep activation energy are 6.53 & PLUSMN; 0.74 and 546.7 & PLUSMN; 6.8 kJ/mol, respectively. The creep activation energy is higher than that of lattice self-diffusion, which is related to the interaction between dislocation and gamma & PRIME; precipitates and can be corrected by threshold stress. The threshold stresses are 109.1 MPa, 51.5 MPa and 24.8 MPa at 700 ?, 750 ? and 775 ?, respectively. The true stress exponent is 4.95 & PLUSMN; 0.14 and the true creep activation energy is determined to be 288.3 & PLUSMN; 4.3 kJ/mol. The microstructure analysis demonstrates that the climbing of a/2 < 110 > perfect dislocation is the primary mechanism of creep at 700 ?. The dislocation climbing and a/6 < 112 > partial dislocation shearing into gamma & PRIME; are both significant factors during creep deformation at 750 ?. The creep damage tolerance of 6.4 & PLUSMN; 1.1 indicates that microstructural degradation, including gamma & PRIME; and M23C6 coarsening, is the primary creep damage mechanism for the GH984G alloy. The deformation mechanism map for GH984G alloy is established and the creep mechanism within the investigated conditions locates in the power-law creep domain controlled by dislocation climbing.
关键词	GH984G alloy Creep Microstructure evolution Creep damage Deformation mechanism map
资助者	National Natural Science Foundation of China ; China Postdoctoral Science Foundation
DOI	10.1016/j.msea.2022.143819
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51971216] ; China Postdoctoral Science Foundation[2020M681000]
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:000856601700002
出版者	ELSEVIER SCIENCE SA
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/175419
专题	中国科学院金属研究所
通讯作者	Zhou, Lanzhang
作者单位	1.Chinese Acad Sci, Inst Met Res, Shi changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China 3.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Wu, Yunsheng,Zhang, Xiangxiang,Wang, Changshuai,et al. Creep deformation behavior of the Ni-Fe-based GH984G alloy[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2022,854:9.
APA	Wu, Yunsheng,Zhang, Xiangxiang,Wang, Changshuai,Qin, Xuezhi,Hou, Jieshan,&Zhou, Lanzhang.(2022).Creep deformation behavior of the Ni-Fe-based GH984G alloy.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,854,9.
MLA	Wu, Yunsheng,et al."Creep deformation behavior of the Ni-Fe-based GH984G alloy".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 854(2022):9.