Evolution of micro-pores in a single crystal nickel-based superalloy during 980 degrees C creep

doi:10.1007/s40195-021-01371-6

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	Evolution of micro-pores in a single crystal nickel-based superalloy during 980 degrees C creep
	He, Yufeng 1,2; Wang, Shaogang 3; Shen, Jian 2; Wang, Dong 2; Lu, Yuzhang 2; Lou, Langhong 2; Zhang, Jian 2
刊名	ACTA METALLURGICA SINICA-ENGLISH LETTERS
	2022-02-25
页码	10
关键词	Single crystal superalloy Creep damage Micro-pore evolution X-ray tomography
ISSN号	1006-7191
DOI	10.1007/s40195-021-01371-6
通讯作者	Shen, Jian(shenjian@imr.ac.cn) ; Zhang, Jian(jianzhang@imr.ac.cn)
英文摘要	The evolution of micro-pores in a single crystal nickel-based superalloy during creep at 980 degrees C/220 MPa was investigated by X-ray computed tomography. Time-dependent ex-situ 3D information including the number, volume fraction, distribution and morphology of micro-pores was analyzed. The results reveal that the significant formation and growth of micro-pores occur at the end of secondary/beginning of tertiary creep stage. The irregular large pores as well as high density pores located at strain concentration region are the major detrimental factors facilitating the creep damage. Creep failure is resulted from the connection of surface cracks induced by oxidation, and the internal cracks generated from growth and merging of micro-pores.
资助项目	National Natural Science Foundation of China[51631008] ; National Natural Science Foundation of China[91860201] ; National Natural Science Foundation of China[51771204] ; National Natural Science Foundation of China[51911530154] ; National Natural Science Foundation of China[U1732131] ; National Science and Technology Major Project[2017-VII-0008-0101] ; National Science and Technology Major Project[2017-VI0003-0073] ; National Science and Technology Major Project[J2019-VI-0010] ; Key Deployment Projects of the Chinese Academy of Sciences[ZDRW-CN-2019-01]
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	CHINESE ACAD SCIENCES, INST METAL RESEARCH
WOS记录号	WOS:000761853900001
资助机构	National Natural Science Foundation of China ; National Science and Technology Major Project ; Key Deployment Projects of the Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/173384]
专题	金属研究所_中国科学院金属研究所
通讯作者	Shen, Jian; Zhang, Jian
作者单位	1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Superalloys Div, Shenyang 110016, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	He, Yufeng,Wang, Shaogang,Shen, Jian,et al. Evolution of micro-pores in a single crystal nickel-based superalloy during 980 degrees C creep[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2022:10.
APA	He, Yufeng.,Wang, Shaogang.,Shen, Jian.,Wang, Dong.,Lu, Yuzhang.,...&Zhang, Jian.(2022).Evolution of micro-pores in a single crystal nickel-based superalloy during 980 degrees C creep.ACTA METALLURGICA SINICA-ENGLISH LETTERS,10.
MLA	He, Yufeng,et al."Evolution of micro-pores in a single crystal nickel-based superalloy during 980 degrees C creep".ACTA METALLURGICA SINICA-ENGLISH LETTERS (2022):10.