The thin-wall debit of a typical cast polycrystalline M951 alloy

doi:10.1016/j.pnsc.2021.10.010

CORC > 金属研究所 > 中国科学院金属研究所

	The thin-wall debit of a typical cast polycrystalline M951 alloy
	Li, Qi 1,2; Xie, Jun 1; Yu, JinJiang 1; Shu, Delong 1; Hou, Guichen 1; Sun, Xiaofeng 1; Zhou, Yizhou 1
刊名	PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL
	2022-02-01
卷号	32 期号:1 页码:104-113
关键词	M951 Thin-wall debit Surface crack Through-grain boundary
ISSN号	1002-0071
DOI	10.1016/j.pnsc.2021.10.010
通讯作者	Xie, Jun(junxie@imr.ac.cn) ; Yu, JinJiang(jjyu@imr.ac.cn)
英文摘要	The effect of specimen thickness on the rupture properties of cast Ni-based polycrystal superalloy M951 was investigated in this paper. The results of the rupture tests in air under 980 degrees C/90 MPa revealed that the rupture life and elongation obviously decreased with decreasing specimen thickness. The thin-wall effect for polycrystal superalloy M951 is associated with several factors. First, the surface oxidation and internal nitridation induce the reduction in the load-bearing section, which accelerates the rupture fracture of thin specimens. Second, the combined effect of oxidation and stress at the surface grain boundary facilitates the premature initiation and propagation of the surface cracks in thin specimen. Third, the through-grain boundaries introduce by specimens machining are detrimental for rupture property. A direct comparison of rupture properties of thin-wall samples with different grain morphologies indicate that thin-wall effect can be diminished by avoiding through-grain boundary introduction.
资助项目	National Natural Science Foundation of China[51971214] ; National Natural Science Foundation of China[51771191] ; National Natural Science Foundation of China[51701212] ; Na-tional Science and Technology Major Project[J2019-VI-0018-0133] ; Liaoning Provincial Natural Science Foundation of China
WOS研究方向	Materials Science ; Science & Technology - Other Topics
语种	英语
出版者	ELSEVIER SCIENCE INC
WOS记录号	WOS:000760773500002
资助机构	National Natural Science Foundation of China ; Na-tional Science and Technology Major Project ; Liaoning Provincial Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/173253]
专题	金属研究所_中国科学院金属研究所
通讯作者	Xie, Jun; Yu, JinJiang
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	Li, Qi,Xie, Jun,Yu, JinJiang,et al. The thin-wall debit of a typical cast polycrystalline M951 alloy[J]. PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL,2022,32(1):104-113.
APA	Li, Qi.,Xie, Jun.,Yu, JinJiang.,Shu, Delong.,Hou, Guichen.,...&Zhou, Yizhou.(2022).The thin-wall debit of a typical cast polycrystalline M951 alloy.PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL,32(1),104-113.
MLA	Li, Qi,et al."The thin-wall debit of a typical cast polycrystalline M951 alloy".PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL 32.1(2022):104-113.