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The synchronous improvement of strength and plasticity (SISP) in new Ni-Co based disc superalloys by controling stacking fault energy
Xu, H.; Zhang, Z. J.; Zhang, P.; Cui, C. Y.; Jin, T.; Zhang, Z. F.; Zhang, ZJ; Zhang, ZF (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China.; Zhang, ZF (reprint author), Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China.; Cui, CY (reprint author), Chinese Acad Sci, Inst Met Res, Superalloy Div, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China.
2017-08-14
Source PublicationNATURE PUBLISHING GROUP
ISSN2045-2322
Volume7Pages:-
AbstractIt is a great challenge to improve the strength of disc superalloys without great loss of plasticity together since the microstructures benefiting the strength always do not avail the plasticity. Interestingly, this study shows that the trade-off relationship between strength and plasticity can be broken through decreasing stacking fault energy (SFE) in newly developed Ni-Co based disc superalloys. Axial tensile tests in the temperature range of 25 to 725 degrees C were carried out in these alloys with Co content ranging from 5% to 23% (wt.%). It is found that the ultimate tensile strength (UTS) and uniform elongation (UE) are improved synchronously when microtwinning is activated by decreasing the SFE at 650 and 725 degrees C. In contrast, only UTS is improved when stacking fault (SF) dominates the plastic deformation at 25 and 400 degrees C. These results may be helpful for designing advanced disc superalloys with relatively excellent strength and plasticity simultaneously.; It is a great challenge to improve the strength of disc superalloys without great loss of plasticity together since the microstructures benefiting the strength always do not avail the plasticity. Interestingly, this study shows that the trade-off relationship between strength and plasticity can be broken through decreasing stacking fault energy (SFE) in newly developed Ni-Co based disc superalloys. Axial tensile tests in the temperature range of 25 to 725 degrees C were carried out in these alloys with Co content ranging from 5% to 23% (wt.%). It is found that the ultimate tensile strength (UTS) and uniform elongation (UE) are improved synchronously when microtwinning is activated by decreasing the SFE at 650 and 725 degrees C. In contrast, only UTS is improved when stacking fault (SF) dominates the plastic deformation at 25 and 400 degrees C. These results may be helpful for designing advanced disc superalloys with relatively excellent strength and plasticity simultaneously.
description.department[xu, h. ; zhang, z. j. ; zhang, p. ; zhang, z. f.] chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, liaoning, peoples r china ; [xu, h. ; zhang, z. f.] univ chinese acad sci, 19a yuquan rd, beijing 100049, peoples r china ; [cui, c. y. ; jin, t.] chinese acad sci, inst met res, superalloy div, 72 wenhua rd, shenyang 110016, liaoning, peoples r china
Subject AreaMultidisciplinary Sciences
Funding OrganizationNational Natural Science Foundation of China (NSFC) [51331007, 51671189, 11332010]
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/79151
Collection中国科学院金属研究所
Corresponding AuthorZhang, ZJ; Zhang, ZF (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China.; Zhang, ZF (reprint author), Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China.; Cui, CY (reprint author), Chinese Acad Sci, Inst Met Res, Superalloy Div, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China.
Recommended Citation
GB/T 7714
Xu, H.,Zhang, Z. J.,Zhang, P.,et al. The synchronous improvement of strength and plasticity (SISP) in new Ni-Co based disc superalloys by controling stacking fault energy[J]. NATURE PUBLISHING GROUP,2017,7:-.
APA Xu, H..,Zhang, Z. J..,Zhang, P..,Cui, C. Y..,Jin, T..,...&Cui, CY .(2017).The synchronous improvement of strength and plasticity (SISP) in new Ni-Co based disc superalloys by controling stacking fault energy.NATURE PUBLISHING GROUP,7,-.
MLA Xu, H.,et al."The synchronous improvement of strength and plasticity (SISP) in new Ni-Co based disc superalloys by controling stacking fault energy".NATURE PUBLISHING GROUP 7(2017):-.
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