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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 degrees C
Wang, Guang-Lei1,2; Liu, Jin-Lai2; Liu, Ji-De2; Zhou, Yi-Zhou2; Sun, Xu-Dong1; Zhang, Hai-Feng1,2; Sun, Xiao-Feng2
Corresponding AuthorLiu, Jin-Lai(jlliu@imr.ac.cn) ; Liu, Ji-De(jdliu@imr.ac.cn)
2020-10-13
Source PublicationACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN1006-7191
Pages10
AbstractStress-rupture properties of a Ni-base Re-containing single-crystal superalloy with three orientations have been tested under 900 degrees 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 gamma'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 gamma/gamma'microstructure by {111}< 112 & rang; 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.
KeywordNickel-base superalloy Stress-rupture property Orientation effect Deformation microstructure Fracture behavior
Funding OrganizationNational Key R&D Program of China ; National Natural Science Foundation of China ; National Science and Technology Major Project
DOI10.1007/s40195-020-01131-y
Indexed BySCI
Language英语
Funding ProjectNational Key R&D Program of China[2017YFA0700704] ; National Natural Science Foundation of China[51871221] ; National Science and Technology Major Project[2017-VI-0002-0072]
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000578860300003
PublisherCHINESE ACAD SCIENCES, INST METAL RESEARCH
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Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/141035
Collection中国科学院金属研究所
Corresponding AuthorLiu, Jin-Lai; Liu, Ji-De
Affiliation1.Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110004, Peoples R China
2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Wang, Guang-Lei,Liu, Jin-Lai,Liu, Ji-De,et al. Effect of Orientation on Stress-Rupture Property and Related Deformation Microstructure of a Ni-Base Re-containing Single-Crystal Superalloy at 900 degrees C[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2020:10.
APA Wang, Guang-Lei.,Liu, Jin-Lai.,Liu, Ji-De.,Zhou, Yi-Zhou.,Sun, Xu-Dong.,...&Sun, Xiao-Feng.(2020).Effect of Orientation on Stress-Rupture Property and Related Deformation Microstructure of a Ni-Base Re-containing Single-Crystal Superalloy at 900 degrees C.ACTA METALLURGICA SINICA-ENGLISH LETTERS,10.
MLA Wang, Guang-Lei,et al."Effect of Orientation on Stress-Rupture Property and Related Deformation Microstructure of a Ni-Base Re-containing Single-Crystal Superalloy at 900 degrees C".ACTA METALLURGICA SINICA-ENGLISH LETTERS (2020):10.
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