Defect interactions and formation of nanometer gamma phases within gamma' precipitates in Ni-Co-based superalloys during creep

doi:10.1016/j.matchar.2023.112935

IMR OpenIR

	Defect interactions and formation of nanometer gamma phases within gamma' precipitates in Ni-Co-based superalloys during creep
	Huang, Xingwei 1,2; Wang, Weizhen 1; Cui, Chuanyong 3; Ye, Hengqiang 2; Yang, Zhiqing 2,4
通讯作者	Cui, Chuanyong(chycui@imr.ac.cn) ; Yang, Zhiqing(yangzq34@yahoo.com)
	2023-07-01
发表期刊	MATERIALS CHARACTERIZATION
ISSN	1044-5803
卷号	201 页码:10
摘要	Interactions between different stacking faults (SFs) and microtwins (MTs) in gamma' precipitates within Ni-Co-based superalloys during creep were investigated with atomic resolution. And significant segregation of Co and Cr was detected at SF-SF, SF-MT and MT-MT intersections in gamma' precipitates within samples crept at intermediate temperatures (680-750 degrees C) under different stresses. Local concentration of gamma' formers (Al and Ti) were decreased below 10 at.% which is too low to stabilize chemically ordered gamma' phase at such intersections. Localized trans-formation from chemically ordered gamma' to disordered gamma was confirmed by atomic-resolution imaging. Quantitative analyses indicated that pipe diffusion along interfacial dislocations should play an important role in facilitating localized gamma'-to-gamma transformation. Formation of gamma nanorods/nanoplates along those intersections within gamma' pre-cipitates can impede glide of twinning dislocations and superlattice dislocations, which can consequently play a role in resisting creep deformation of the alloy.
关键词	Superalloy Stacking fault Microtwin Segregation Creep
资助者	National Natural Science Foundation of China ; Ministry of Science and Technology of China ; Basic and Applied Basic Research Programme of Guangdong Province ; Key Research Program of Frontier Sciences, CAS ; Ji Hua Laboratory
DOI	10.1016/j.matchar.2023.112935
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51971225] ; Ministry of Science and Technology of China[2017YFA0700703] ; Ministry of Science and Technology of China[2019YFA0705304] ; Basic and Applied Basic Research Programme of Guangdong Province[2021B0301030003] ; Key Research Program of Frontier Sciences, CAS[X210141TL210] ; Ji Hua Laboratory ; [QYZDY-SSW-JSC027]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Materials Science, Characterization & Testing
WOS记录号	WOS:000992003700001
出版者	ELSEVIER SCIENCE INC
引用统计	被引频次：3[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/321006/177720
专题	中国科学院金属研究所
通讯作者	Cui, Chuanyong; Yang, Zhiqing
作者单位	1.Univ Sci & Technol China, Inst Met Res, Chinese Acad Sci, Sch Mat Sci & Engn,Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Ji Hua Lab, Foshan 528200, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Superalloy Div, Shenyang 110016, Peoples R China 4.Foshan Univ, Foshan 528231, Peoples R China
推荐引用方式 GB/T 7714	Huang, Xingwei,Wang, Weizhen,Cui, Chuanyong,et al. Defect interactions and formation of nanometer gamma phases within gamma' precipitates in Ni-Co-based superalloys during creep[J]. MATERIALS CHARACTERIZATION,2023,201:10.
APA	Huang, Xingwei,Wang, Weizhen,Cui, Chuanyong,Ye, Hengqiang,&Yang, Zhiqing.(2023).Defect interactions and formation of nanometer gamma phases within gamma' precipitates in Ni-Co-based superalloys during creep.MATERIALS CHARACTERIZATION,201,10.
MLA	Huang, Xingwei,et al."Defect interactions and formation of nanometer gamma phases within gamma' precipitates in Ni-Co-based superalloys during creep".MATERIALS CHARACTERIZATION 201(2023):10.