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

页码：1869 / 1875

页数：7

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