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Effect of Aspect Ratio on the Deformation Behavior of Dislocation-Free Ni3Al Nanocubes
Li, Peng1,2; Wang, Xinguang3; Zhou, Yizhou3; Pfetzing-Micklich, Janine2; Somsen, Christoph2; Eggeler, Gunther2
Corresponding AuthorLi, Peng(pengli@ysu.edu.cn) ; Wang, Xinguang(xgwang11b@imr.ac.cn)
2020-11-01
Source PublicationNANOMATERIALS
Volume10Issue:11Pages:11
AbstractThis 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.
KeywordNi3Al nanocubes Ni-base superalloy single crystals aspect ratio in situ compression dislocation free
Funding OrganizationNational Key R&D Program of China (NSFC) ; Deutsche Forschungsgemeinschaft (DFG)
DOI10.3390/nano10112230
Indexed BySCI
Language英语
Funding ProjectNational Key R&D Program of China (NSFC)[2017YFA0700704] ; Deutsche Forschungsgemeinschaft (DFG)[SFB/TR 103]
WOS Research AreaScience & Technology - Other Topics ; Materials Science
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS IDWOS:000593774400001
PublisherMDPI
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/141440
Collection中国科学院金属研究所
Corresponding AuthorLi, Peng; Wang, Xinguang
Affiliation1.Yanshan Univ, State Key Lab Metastable Mat Sci & Technol, Clean Nano Energy Ctr, Qinhuangdao 066004, Hebei, Peoples R China
2.Ruhr Univ Bochum, Inst Werkstoffe, D-44780 Bochum, Germany
3.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China
Recommended Citation
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.
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