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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-Lei; Liu, Jin-Lai; Liu, Ji-De; Zhou, Yi-Zhou; Sun, Xu-Dong; Zhang, Hai-Feng; Sun, Xiao-Feng
2020-11-01
Source PublicationACTA METALLURGICA SINICA-ENGLISH LETTERS
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 > 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.
DOI10.1007/s40195-020-01131-y
WOS IDWOS:000578860300003
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/82442
Collection中国科学院金属研究所
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.
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.
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).
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