Evolution of twins and sub-boundaries at the early stage of dynamic recrystallization in a Ni-30%Fe austenitic model alloy

doi:10.1016/j.msea.2018.07.071

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	Evolution of twins and sub-boundaries at the early stage of dynamic recrystallization in a Ni-30%Fe austenitic model alloy
	Chen, WX ; Jia, CN ; Hu, BJ ; Zheng, CW ; Li, DZ
刊名	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
	2018-08-22
卷号	733 页码:419-428
关键词	Dynamic recrystallization Austenite Twins Nucleation Ni-30%Fe alloy
ISSN号	0921-5093
DOI	10.1016/j.msea.2018.07.071
英文摘要	Evolution of twins and sub-boundaries at the early stage of dynamic recrystallization (DRX) is investigated in a Ni-30%Fe austenitic alloy. It is found that the primary nucleation of DRX is accomplished by formation of annealing twins along the bulged pre-existing grain boundaries and at the triple junctions at the early stage of deformation. With the strain increasing, the DRX nucleation due to the formation and evolution of sub boundaries also plays a significant role. The results also indicate that the 9 twin boundaries are generated by mutual interactions between the encountered 3 twin boundaries at the initial stage. The pre-existing twin boundaries can gradually convert to general boundaries or twin steps owing to the interaction of twin boundaries with dislocations. Continuous DRX (CDRX) mechanism associated with the sub-boundaries evolution is found to be an assistant mechanism at the early stage of DRX. Besides, formation of sub-boundaries inside the growing DRX grains can stimulate a new round DRX nucleation by impeding migration of grain boundaries and making them serrated.
学科主题	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
语种	英语
WOS记录号	WOS:000442064800047
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/80009]
专题	金属研究所_中国科学院金属研究所
作者单位	1.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Wenhua Rd 72, Shenyang 110016, Liaoning, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Wenhua Rd 72, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Chen, WX,Jia, CN,Hu, BJ,et al. Evolution of twins and sub-boundaries at the early stage of dynamic recrystallization in a Ni-30%Fe austenitic model alloy[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2018,733:419-428.
APA	Chen, WX,Jia, CN,Hu, BJ,Zheng, CW,&Li, DZ.(2018).Evolution of twins and sub-boundaries at the early stage of dynamic recrystallization in a Ni-30%Fe austenitic model alloy.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,733,419-428.
MLA	Chen, WX,et al."Evolution of twins and sub-boundaries at the early stage of dynamic recrystallization in a Ni-30%Fe austenitic model alloy".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 733(2018):419-428.