Reversible Twinning in Pure Aluminum

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	Reversible Twinning in Pure Aluminum
	B. Q. Li; M. L. Sui; B. Li; E. Ma; S. X. Mao
	2009
发表期刊	Physical Review Letters
ISSN	0031-9007
卷号	102 期号:20
摘要	Twinning in metals is normally a permanent plastic deformation mechanism. Here we report reversible twinning in high stacking fault energy (SFE) aluminum. Twinning and spontaneous detwinning at the crack tip have been captured in situ during tensile straining under a transmission electron microscope. Both the in situ observation and the molecular dynamics simulations reveal a two-stage detwinning process. The high propensity for detwinning is due to the high SFE and the low frictional forces against the detwinning partial dislocations in Al. This discovery of reversible twinning has implications for the deformation of other high SFE materials.
部门归属	[li, b. q.; sui, m. l.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [li, b.; ma, e.] johns hopkins univ, dept mat sci & engn, baltimore, md 21218 usa. [mao, s. x.] univ pittsburgh, dept mech engn & mat sci, pittsburgh, pa 15261 usa.;li, bq (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china;mlsui@imr.ac.cn smao@engr.pitt.edu
关键词	Molecular-dynamics Simulation Crack-tip Nanocrystalline Aluminum Deformation Al Twins
URL	查看原文
WOS记录号	WOS:000266309000033
引用统计	被引频次：129[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/321006/32011
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	B. Q. Li,M. L. Sui,B. Li,et al. Reversible Twinning in Pure Aluminum[J]. Physical Review Letters,2009,102(20).
APA	B. Q. Li,M. L. Sui,B. Li,E. Ma,&S. X. Mao.(2009).Reversible Twinning in Pure Aluminum.Physical Review Letters,102(20).
MLA	B. Q. Li,et al."Reversible Twinning in Pure Aluminum".Physical Review Letters 102.20(2009).