Effect of pre-strain treatment on mechanical properties of a Ni-Co base disk superalloy

doi:10.1016/j.jallcom.2022.164167

IMR OpenIR

	Effect of pre-strain treatment on mechanical properties of a Ni-Co base disk superalloy
	Zhu, C. Z.1,2; Zhang, R.1; Cui, C. Y.1; Zhou, Y. Z.1; Qu, J. L.3; Gan, B.3; Zhang, B. J.3; Sun, X. F.1
通讯作者	Zhang, R.(rzhang@imr.ac.cn) ; Cui, C. Y.(chycui@imr.ac.cn)
	2022-06-05
发表期刊	JOURNAL OF ALLOYS AND COMPOUNDS
ISSN	0925-8388
卷号	905 页码:10
摘要	The effect of pre-strain treatment on mechanical properties of a Ni-Co base disk superalloy was studied. Results show that the pre-strain treatment, creep at 725 degrees C/630 MPa, improves the yield strength of the alloy at 23 degrees C and 760 degrees C. However, the creep life (at 760 degrees C/480 MPa) of the alloy was reduced by pre-strain treatment. The microstructure indicated that a lot of microtwins and Suzuki segregations were introduced by the pre-strain treatment, besides some unfavorable factors on mechanical properties, i.e., ripening of precipitates. The interactions of microtwin and Suzuki segregation with dislocations were discussed in this study, and it was deemed that the impediment of twin boundary and Suzuki segregation to the motion of dislocation may be responsible for the enhancement of the mechanical properties. Meanwhile, the microtwin and the Suzuki segregation have good stability at service temperature. If the problem of reducing the creep properties caused by pre-strain treatment would be solved, the introduction of microtwin and Suzuki segregation appropriately can be considered as a novel strengthening method in designing advanced superalloys.(c) 2022 Elsevier B.V. All rights reserved.
关键词	Ni-Co base superalloy Pre-strain Microstructure Mechanical property Microtwinning Suzuki segregation
资助者	National Key Research and Development Program of China ; National Science and Technology Major Project of China ; IMR Innovation Fund ; National Natural Science Foundation of China ; Doctoral Start-up Foundation of Liaoning Province
DOI	10.1016/j.jallcom.2022.164167
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China[2017YFA0700703] ; National Key Research and Development Program of China[2019YFA0705300] ; National Science and Technology Major Project of China[2019-VI-0006-0120] ; IMR Innovation Fund[2021-PY09] ; National Natural Science Foundation of China[92060102] ; Doctoral Start-up Foundation of Liaoning Province[2020-BS-0 07]
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000779681500003
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/172873
专题	中国科学院金属研究所
通讯作者	Zhang, R.; Cui, C. Y.
作者单位	1.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, 72 Wenhua Rd, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, 96 Jinzhai Rd, Hefei 230026, Peoples R China 3.Cent Iron & Steel Res Inst, Beijing Key Lab Adv High Temp Mat, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Zhu, C. Z.,Zhang, R.,Cui, C. Y.,et al. Effect of pre-strain treatment on mechanical properties of a Ni-Co base disk superalloy[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2022,905:10.
APA	Zhu, C. Z..,Zhang, R..,Cui, C. Y..,Zhou, Y. Z..,Qu, J. L..,...&Sun, X. F..(2022).Effect of pre-strain treatment on mechanical properties of a Ni-Co base disk superalloy.JOURNAL OF ALLOYS AND COMPOUNDS,905,10.
MLA	Zhu, C. Z.,et al."Effect of pre-strain treatment on mechanical properties of a Ni-Co base disk superalloy".JOURNAL OF ALLOYS AND COMPOUNDS 905(2022):10.