Effect of cold rolling on microstructure, texture, and tensile properties of a Ni-Fe-based superalloy

doi:10.1016/j.jallcom.2022.168383

IMR OpenIR

	Effect of cold rolling on microstructure, texture, and tensile properties of a Ni-Fe-based superalloy
	Wang, Jiaqi 1,2; Cheng, Sihan 1,2; Wu, Yunsheng 2,3; Wang, Tingting 4; Qin, Xuezhi 2,3; Zhou, Lanzhang 2,3
通讯作者	Qin, Xuezhi(xzqin@imr.ac.cn) ; Zhou, Lanzhang(lzz@imr.ac.cn)
	2023-03-15
发表期刊	JOURNAL OF ALLOYS AND COMPOUNDS
ISSN	0925-8388
卷号	937 页码:14
摘要	In this work, the effect of cold rolling on microstructure, texture, and tensile properties of a Ni-Fe-based superalloy for Generation IV nuclear reactor application was systematically investigated. The results show that different deformed microstructures were observed during cold rolling, including dislocation tangles, slip bands, and microtwins (MTs). The dominant cold rolling deformation mechanism of the alloy gradually changed from planar slipping to deformation twinning, which was a little different from Ni-/Co-based superalloys. A texture transition from Copper {1121 < 111 > to Brass {1101 < 112 > and Goss {1101 < 001 > at 25 % rolling reduction was detected due to the changed deformation mechanism. The standard heat treatment alloy exhibited a yield strength of 213 MPa and good elongation of 54 %. By in-creasing the rolling reduction up to 55 %, the yield strength was significantly enhanced to 872 MPa, which was attributed to the combined strengthening from both MTs and dislocations. Fine-spaced MTs with co-herent interfaces can impede dislocation motion effectively and play a critical role in the strengthening, contributing 75-235 MPa to the yield strength. MTs can also provide ample room for dislocation accu-mulation, which maintained a reasonable elongation of 12 %. Moreover, due to the texture evolution during cold rolling, the averaged Schmid factor (SF) values for {1111 < 110 > slip system exhibited a decreasing trend with the increased rolling reduction, contributing to the progressive increase in yield strength. The present work demonstrates that the formation of MTs at high rolling reductions is an essential reason for the improvement of mechanical properties of the alloy, which also provides a new strategy for designing and optimizing high-performance solid-solution strengthened Ni-Fe-based superalloys.(c) 2022 Elsevier B.V. All rights reserved.
关键词	Ni-Fe-based superalloy Cold rolling Microstructure Texture Strength Deformation twinning
资助者	National Natural Science Foundation of China ; China Postdoctoral Science Foundation
DOI	10.1016/j.jallcom.2022.168383
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; [51871213] ; [2020M681000]
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:000900167100003
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：17[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/321006/175790
专题	中国科学院金属研究所
通讯作者	Qin, Xuezhi; Zhou, Lanzhang
作者单位	1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 3.Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China 4.Baowu Special Met Co Ltd, Shanghai 200940, Peoples R China
推荐引用方式 GB/T 7714	Wang, Jiaqi,Cheng, Sihan,Wu, Yunsheng,et al. Effect of cold rolling on microstructure, texture, and tensile properties of a Ni-Fe-based superalloy[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2023,937:14.
APA	Wang, Jiaqi,Cheng, Sihan,Wu, Yunsheng,Wang, Tingting,Qin, Xuezhi,&Zhou, Lanzhang.(2023).Effect of cold rolling on microstructure, texture, and tensile properties of a Ni-Fe-based superalloy.JOURNAL OF ALLOYS AND COMPOUNDS,937,14.
MLA	Wang, Jiaqi,et al."Effect of cold rolling on microstructure, texture, and tensile properties of a Ni-Fe-based superalloy".JOURNAL OF ALLOYS AND COMPOUNDS 937(2023):14.