Breakdown of Shape Memory Effect in Bent Cu-Al-Ni Nanopillars: When Twin Boundaries Become Stacking Faults

doi:10.1021/acs.nanolett.5b03483

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	Breakdown of Shape Memory Effect in Bent Cu-Al-Ni Nanopillars: When Twin Boundaries Become Stacking Faults
	Liu LF(刘丽凤); Ding XD; Sun J; Li SZ; Salje EKH; Ding, XD (reprint author), Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China.
发表期刊	NANO LETTERS
	2016-01
卷号	16 期号:1 页码:194-198
ISSN	1530-6984
摘要	Bent Cu-Al-Ni nanopillars (diameters 90-750 nm) show a shape memory effect, SME, for diameters D > 300 nm. The SME and the associated twinning are located in a small deformed section of the nanopillar. Thick nanopillars (D > 300 nm) transform to austenite under heating, including the deformed region. Thin nanopillars (D < 130 nm) do not twin but generate highly disordered sequences of stacking faults in the deformed region. No SME occurs and heating converts only the undeformed regions into austenite. The defect-rich, deformed region remains in the martensite phase even after prolonged heating in the stability field of austenite. A complex mixture of twins and stacking faults was found for diameters 130 nm < D < 300 nm. The size effect of the SME in Cu-Al-Ni nanopillars consists of an approximately linear reduction of the SME between 300 and 130 nm when the SME completely vanishes for smaller diameters.
关键词	Finite Size Scaling Shape Memory Effect Size Dependence Of Shape Memory Twinning Stacking Faults Cu-al-ni Alloys
DOI	10.1021/acs.nanolett.5b03483
URL	查看原文
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000368322700031
关键词[WOS]	RESOLUTION ELECTRON-MICROSCOPY ; PHASE-TRANSFORMATION ; DEFORMATION ; ALLOYS ; NANOCRYSTALLINE ; PROPAGATION ; MARTENSITE ; TRANSITION ; MECHANISMS ; ORIGIN
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS类目	Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
项目资助者	This work was supported by the National Natural Science Foundation of China (grant nos. 51171140, 51231008, 51321003, and 51320105014), the National Basic Research Program of China (grant no. 2012CB619402), the Program of Introducing Talents of Discipline to Universities in China (grant no. B06025), and The Engineering and Physical Sciences Research Council (grant no. EP/K009702/1). The authors thank "Jia-Lab for Interfaces and Atomic Structure" for letting us use spherical aberration-corrected (S)TEM, and intensive discussions. The authors also thank Xiaolei Wu for helpful discussion, Penghan Lu, Jian Zhang, and Shengwu Guo for the help on the in situ experiments.
课题组名称	LNM材料介观力学性能的表征
论文分区	一类
力学所作者排名	False
引用统计	被引频次：11[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/58642
专题	非线性力学国家重点实验室
通讯作者	Ding, XD (reprint author), Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China.
推荐引用方式 GB/T 7714	Liu LF,Ding XD,Sun J,et al. Breakdown of Shape Memory Effect in Bent Cu-Al-Ni Nanopillars: When Twin Boundaries Become Stacking Faults[J]. NANO LETTERS,2016,16,1,:194-198.
APA	Liu LF,Ding XD,Sun J,Li SZ,Salje EKH,&Ding, XD .(2016).Breakdown of Shape Memory Effect in Bent Cu-Al-Ni Nanopillars: When Twin Boundaries Become Stacking Faults.NANO LETTERS,16(1),194-198.
MLA	Liu LF,et al."Breakdown of Shape Memory Effect in Bent Cu-Al-Ni Nanopillars: When Twin Boundaries Become Stacking Faults".NANO LETTERS 16.1(2016):194-198.

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