Effect of Aspect Ratio on the Deformation Behavior of Dislocation-Free Ni3Al Nanocubes

doi:10.3390/nano10112230

CORC > 金属研究所 > 中国科学院金属研究所

	Effect of Aspect Ratio on the Deformation Behavior of Dislocation-Free Ni3Al Nanocubes
	Li, Peng 2,3; Wang, Xinguang 1; Zhou, Yizhou 1; Pfetzing-Micklich, Janine 2; Somsen, Christoph 2; Eggeler, Gunther 2
刊名	NANOMATERIALS
	2020-11-01
卷号	10 期号:11 页码:11
关键词	Ni3Al nanocubes Ni-base superalloy single crystals aspect ratio in situ compression dislocation free
DOI	10.3390/nano10112230
通讯作者	Li, Peng(pengli@ysu.edu.cn) ; Wang, Xinguang(xgwang11b@imr.ac.cn)
英文摘要	This study concentrates on several factors which govern the nanoscale plasticity of in situ compressed dislocation-free Ni3Al nanocubes: cube size, aspect ratio and the presence of grooves. The yield strength of dislocation-free Ni3Al nanocubes exhibits an apparent size dependence. The size dependence is strong when cubes are smaller than 300 nm. Compared with the strength of bulk Ni3Al single crystals, the strength of nanocubes is two orders of magnitude higher, which clearly demonstrates that there is a size effect. Nanocube plasticity strongly depends on the alignment and the shape of the cubes. Deformed aligned nanocubes either display only a few localized deformation events (slip lines) or were homogenously compressed into flats due to multiple slip dislocation-mediated plasticity. For an aligned cube, crack initiation at the intersection of a slip line with a groove in the cube surface was observed. In case of a double cube, crack initiation occurs at surface irregularities, while subsequent crack propagation occurs along one or more slip planes.
资助项目	National Key R&D Program of China (NSFC)[2017YFA0700704] ; Deutsche Forschungsgemeinschaft (DFG)[SFB/TR 103]
WOS研究方向	Science & Technology - Other Topics ; Materials Science
语种	英语
出版者	MDPI
WOS记录号	WOS:000593774400001
资助机构	National Key R&D Program of China (NSFC) ; Deutsche Forschungsgemeinschaft (DFG)
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/141439]
专题	金属研究所_中国科学院金属研究所
通讯作者	Li, Peng; Wang, Xinguang
作者单位	1.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 2.Ruhr Univ Bochum, Inst Werkstoffe, D-44780 Bochum, Germany 3.Yanshan Univ, State Key Lab Metastable Mat Sci & Technol, Clean Nano Energy Ctr, Qinhuangdao 066004, Hebei, Peoples R China
推荐引用方式 GB/T 7714	Li, Peng,Wang, Xinguang,Zhou, Yizhou,et al. Effect of Aspect Ratio on the Deformation Behavior of Dislocation-Free Ni3Al Nanocubes[J]. NANOMATERIALS,2020,10(11):11.
APA	Li, Peng,Wang, Xinguang,Zhou, Yizhou,Pfetzing-Micklich, Janine,Somsen, Christoph,&Eggeler, Gunther.(2020).Effect of Aspect Ratio on the Deformation Behavior of Dislocation-Free Ni3Al Nanocubes.NANOMATERIALS,10(11),11.
MLA	Li, Peng,et al."Effect of Aspect Ratio on the Deformation Behavior of Dislocation-Free Ni3Al Nanocubes".NANOMATERIALS 10.11(2020):11.