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Evaluation of Dislocation Storage by Means of Crystal Plasticity Analysis

Published online by Cambridge University Press:  14 March 2011

Tetsuya Ohashi  and
Kazuhisa Asakawa
Tetsuya Ohashi
Affiliation:
Kitami Institute of Technology
Kazuhisa Asakawa
Affiliation:
Graduate student, Kitami Institute of Technology
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Abstract

A numerical model of two phase metal microstructure of f.c.c. type crystal is made where a harder inclusion of a spherical shape is embedded in softer matrix. The model is subjected to a tensile load and its deformation is analyzed by a finite element crystal plasticity code. Under the tensile load, plastic slip deformation on {111}<110> slip systems take place in the matrix and the density distribution of the geometrically necessary dislocations is evaluated from the gradient of plastic shear strain on slip systems. Obtained results show not only a simple loop structure around the inclusion but also kink wall structure and some smaller loops. Details of the strucuture are discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 683: Symposium BB – Materials Instabilities and Patterning in Metals , 2001 , BB5.4.1
Copyright
Copyright © Materials Research Society 2001

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References

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