Bending of single crystal microcantilever beams of cube orientation: Finite element model and experiments

被引：29

作者：

Demir, Eralp ^{[1
]}

Roters, Franz ^{[1
]}

Raabe, Dierk ^{[1
]}

机构：

[1] Max Planck Inst Eisenforsch GmbH, D-40237 Dusseldorf, Germany

来源：

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS | 2010年 / 58卷 / 10期

关键词：

Cube orientation; Single crystal; Bending size effect; Strain gradient hardening; Crystal plasticity; STRAIN GRADIENT PLASTICITY; MECHANICAL-PROPERTIES; DEFORMATION; SCALE;

D O I：

10.1016/j.jmps.2010.07.007

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The aim of this work is to investigate the microstructure evolution, stress-strain response and strain hardening behavior of microscale beams. For that purpose, two single crystal cantilever beams in the size dependent regime were manufactured by ion beam milling and beams were bent with an indenter device. A crystal plasticity material model for large deformations was implemented in a finite element framework to further investigate the effect of boundary constraints. Simulations were performed using bulk material properties of single crystal copper without any special treatment for the strain gradients. The difference between the slopes of the experimental and the simulated force displacement curves suggested negligible amount of strain gradient hardening compared to the statistical hardening mechanisms. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：1599 / 1612

页数：14

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