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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.
刊名	NATURE PUBLISHING GROUP
	2017-08-14
卷号	7页码:-
ISSN号	2045-2322
英文摘要	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.; 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.
学科主题	Multidisciplinary Sciences
语种	英语
资助机构	National Natural Science Foundation of China (NSFC) [51331007, 51671189, 11332010]
公开日期	2018-01-10
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/79151]
专题	金属研究所_中国科学院金属研究所
通讯作者	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.
推荐引用方式 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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