Influence of phosphorus on hot deformation microstructure of a Ni-Fe-Cr based alloy

doi:10.1016/j.msea.2019.138454

IMR OpenIR

	Influence of phosphorus on hot deformation microstructure of a Ni-Fe-Cr based alloy
	Wu, Yunsheng 1,2; Qin, Xuezhi 1; Wang, Changshuai 1; Zhou, Lanzhang 1
通讯作者	Zhou, Lanzhang(lzz@imr.ac.cn)
	2019-12-19
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	768 页码:11
摘要	The influence of phosphorus on hot deformation microstructure of GH984G alloy was investigated. The results indicate that phosphorus accelerates the process of dynamic recrystallization (DRX) nucleation and prolongs the time of DRX grain growth. The alloy containing more phosphorus shows greater flow stress and dislocation density in the early stage of hot deformation, while the stress and dislocation density decrease with the increase of phosphorus after further deformation. Phosphorus inhibits the formation of Sigma 3 twin boundary at low strain rate or high deformation temperature but promotes it at high strain rate and low deformation temperature. The microstructure characterizations reveal that more blocky MC carbides with larger size form in the alloy with higher phosphorus content and serve as strong obstacles to the dislocation movement, thus increasing the flow stress and dislocation density in the early stage of hot deformation. The higher dislocation density promotes the nucleation of dynamic recrystallization and then reduces the flow stress and dislocation density at higher strain. The formation of Sigma 3 boundaries depends on growth accident during the process of DRX grain growth. More MC carbides in phosphorus-containing alloy decrease the rate of grain boundary migration and the frequency of growth accident, then reduce the fraction of Sigma 3 boundary. The change of twin boundary with phosphorus content at high strain rate and low deformation temperature is related to the critical grain size of twin formation.
关键词	Phosphorus Hot deformation Dynamic recrystallization Sigma 3 boundary Ni-Fe-Cr based alloy
资助者	National Key Research and Development Program of China ; National Natural Science Foundation of China ; LiaoNing Revitalization Talents Program
DOI	10.1016/j.msea.2019.138454
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China[2017YFB0305204] ; National Natural Science Foundation of China[51971216] ; National Natural Science Foundation of China[51871213] ; LiaoNing Revitalization Talents Program[XLYC1807038]
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000496607100008
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：50[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/321006/137079
专题	中国科学院金属研究所
通讯作者	Zhou, Lanzhang
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China
推荐引用方式 GB/T 7714	Wu, Yunsheng,Qin, Xuezhi,Wang, Changshuai,et al. Influence of phosphorus on hot deformation microstructure of a Ni-Fe-Cr based alloy[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2019,768:11.
APA	Wu, Yunsheng,Qin, Xuezhi,Wang, Changshuai,&Zhou, Lanzhang.(2019).Influence of phosphorus on hot deformation microstructure of a Ni-Fe-Cr based alloy.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,768,11.
MLA	Wu, Yunsheng,et al."Influence of phosphorus on hot deformation microstructure of a Ni-Fe-Cr based alloy".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 768(2019):11.