Ab initio tensile tests of Al bulk crystals and grain boundaries: Universality of mechanical behavior

被引：65

作者：

Janisch, Rebecca ^{[1
]}

Ahmed, Naveed ^{[1
]}

Hartmaier, Alexander ^{[1
]}

机构：

[1] Ruhr Univ Bochum, Interdisciplinary Ctr Adv Mat Simulat, D-44780 Bochum, Germany

来源：

PHYSICAL REVIEW B | 2010年 / 81卷 / 18期

关键词：

METALS; ENERGY; INTERFACES; ALUMINUM; FEATURES;

D O I：

10.1103/PhysRevB.81.184108

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have performed ab initio tensile tests of bulk Al along different tensile axes, as well as perpendicular to different grain boundaries to determine mechanical properties such as interface energy, work of separation, and theoretical strength. We show that all the different investigated geometries exhibit energy-displacement curves that can be brought into coincidence in the spirit of the well known universal binding energy relationship curve. This simplifies significantly the calculation of ab initio tensile strengths for the whole parameter space of grain boundaries.

引用

页数：6

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