Ultrahigh Strength of Dislocation-Free Ni3Al Nanocubes

被引：60
|
作者：
Maass, Robert [1 ]
Meza, Lucas [1 ]
Gan, Bin [2 ]
Tin, Sammy [2 ]
Greer, Julia R. [1 ,3 ]
机构：
[1] CALTECH, Div Engn & Appl Sci, Pasadena, CA 91125 USA
[2] IIT, Chicago, IL 60616 USA
[3] CALTECH, Kavli Nanosci Inst, Pasadena, CA 91125 USA
来源：
SMALL | 2012年 / 8卷 / 12期
关键词：
crystal plasticity; mechanical properties; size effect; nano-characterization; SINGLE-CRYSTALS; MICRO-PILLARS; METAL MICROPILLARS; SIZE DEPENDENCE; YIELD STRENGTH; COMPRESSION; PLASTICITY; DEFORMATION; SUPERALLOYS; BEHAVIOR;
D O I：
10.1002/smll.201102603
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Individual Ni3Al nanocubes under pressure are investigated by comparing the compressive strength of both dislocation-free and irradiated Ni3Al nanocubes. The results are dicussed in light of the size-dependent and size-independent strength of face-centered cubic (fcc) nanocrystals in the framework of dislocation nucleation at free surfaces. This study sheds more light on the understanding of fundamental deformation mechanisms and size-affected strength in dislocation-free metallic nanocrystals. © 2012 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.
引用
收藏
页码：1869 / 1875
页数：7
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