Effect of Orientation on Stress-Rupture Property and Related Deformation Microstructure of a Ni-Base Re-containing Single-Crystal Superalloy at 900 °C

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	Effect of Orientation on Stress-Rupture Property and Related Deformation Microstructure of a Ni-Base Re-containing Single-Crystal Superalloy at 900 °C
	Wang Guanglei 1; Liu Jinlai 2; Liu Jide 2; Zhou Yizhou 2; Sun Xudong 1; Zhang Haifeng 1; Sun Xiaofeng 2
	2021
Source Publication	ACTA METALLURGICA SINICA(ENGLISH LETTERS)
ISSN	1006-7191
Volume	34 Issue:5 Pages:719-728
Abstract	Stress-rupture properties of a Ni-base Re-containing single-crystal superalloy with three orientations have been tested under 900 °C/445 MPa.An obvious anisotropy of stress-rupture property is attributed to orientation reliant deformation microstructure.The good strength in 001 orientation is attributed to the rapid multiplication of dislocations active in horizontal channels and later γ' cutting via dislocations pair coupled with anti-phase boundary.The microtwin formation largely limits the strength and plasticity as a result of the continuous shearing across γ/γ' microstructure by {111} slip activated in 011 orientation.The property in 111 orientation results mainly from the lateral cross-slip movements of the screw dislocations within connected matrix channels as well as the precipitate shearing by coplanar dislocations.Microcracks all initially originate from the interdendritic micropores in three orientations.The critical temperature of stress-rupture anisotropy could be increased by a high level of refractory solutes especially Re.
Keyword	Nickel-base superalloy Stress-rupture property Orientation effect Deformation microstructure Fracture behavior
Language	英语
Document Type	期刊论文
Identifier	http://ir.imr.ac.cn/handle/321006/179663
Collection	中国科学院金属研究所
Affiliation	1.东北大学 2.中国科学院金属研究所
Recommended Citation GB/T 7714	Wang Guanglei,Liu Jinlai,Liu Jide,et al. Effect of Orientation on Stress-Rupture Property and Related Deformation Microstructure of a Ni-Base Re-containing Single-Crystal Superalloy at 900 °C[J]. ACTA METALLURGICA SINICA(ENGLISH LETTERS),2021,34(5):719-728.
APA	Wang Guanglei.,Liu Jinlai.,Liu Jide.,Zhou Yizhou.,Sun Xudong.,...&Sun Xiaofeng.(2021).Effect of Orientation on Stress-Rupture Property and Related Deformation Microstructure of a Ni-Base Re-containing Single-Crystal Superalloy at 900 °C.ACTA METALLURGICA SINICA(ENGLISH LETTERS),34(5),719-728.
MLA	Wang Guanglei,et al."Effect of Orientation on Stress-Rupture Property and Related Deformation Microstructure of a Ni-Base Re-containing Single-Crystal Superalloy at 900 °C".ACTA METALLURGICA SINICA(ENGLISH LETTERS) 34.5(2021):719-728.

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