Formation of incoherent deformation twin boundaries in a coarse-grained Al-7Mg alloy

IMR OpenIR

	Formation of incoherent deformation twin boundaries in a coarse-grained Al-7Mg alloy
	Jin, S. B.; Zhang, K.; Bjorge, R.; Tao, N. R.; Marthinsen, K.; Lu, K.; Li, Y. J.; Yanjun.Li@ntnu.no
	2015
发表期刊	APPLIED PHYSICS LETTERS
ISSN	0003-6951
卷号	107 期号:9 页码:-
摘要	Deformation twinning has rarely been observed in coarse grained Al and its alloys except under some extreme conditions such as ultrahigh deformation strain or strain rates. Here, we report that a significant amount of Sigma 3 deformation twins could be generated in a coarse-grained Al-7Mg alloy by dynamic plastic deformation (DPD). A systematic investigation of the Sigma 3 boundaries shows that they are Sigma 3{112} type incoherent twin boundaries (ITBs). These ITBs have formed by gradual evolution from copious low-angle deformation bands through < 111 >-twist Sigma boundaries by lattice rotation. These findings provide an approach to generate deformation twin boundaries in high stacking fault energy metallic alloys. It is suggested that high solution content of Mg in the alloy and the special deformation mode of DPD played an important role in formation of the Sigma and ITBs. (C) 2015 AIP Publishing LLC.
部门归属	[jin, s. b. ; zhang, k. ; marthinsen, k. ; li, y. j.] norwegian univ sci & technol, dept mat sci & engn, n-7491 trondheim, norway ; [bjorge, r.] sintef mat & chem, n-7465 trondheim, norway ; [tao, n. r. ; lu, k.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china
资助者	Research Council of Norway, under the FRINATEK project 'BENTMAT' [222173]
收录类别	sci
语种	英语
WOS记录号	WOS:000360926200022
引用统计	被引频次：19[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/321006/74857
专题	中国科学院金属研究所
通讯作者	Yanjun.Li@ntnu.no
推荐引用方式 GB/T 7714	Jin, S. B.,Zhang, K.,Bjorge, R.,et al. Formation of incoherent deformation twin boundaries in a coarse-grained Al-7Mg alloy[J]. APPLIED PHYSICS LETTERS,2015,107(9):-.
APA	Jin, S. B..,Zhang, K..,Bjorge, R..,Tao, N. R..,Marthinsen, K..,...&Yanjun.Li@ntnu.no.(2015).Formation of incoherent deformation twin boundaries in a coarse-grained Al-7Mg alloy.APPLIED PHYSICS LETTERS,107(9),-.
MLA	Jin, S. B.,et al."Formation of incoherent deformation twin boundaries in a coarse-grained Al-7Mg alloy".APPLIED PHYSICS LETTERS 107.9(2015):-.