Dislocation-Crystal Plasticity Simulation Based on Self-Organization for Repartition of Dislocation Cell Structures and Subgrain

Naoshi Yamaki; Yoshiteru Aoyagi; Kazuyuki Shizawa

doi:10.4028/www.scientific.net/MSF.503-504.989

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HomeMaterials Science ForumMaterials Science Forum Vols. 503-504Dislocation-Crystal Plasticity Simulation Based on...

Dislocation-Crystal Plasticity Simulation Based on Self-Organization for Repartition of Dislocation Cell Structures and Subgrain

Abstract:

A self-organization model for repartition of dislocation cell structures and transition of subgrains on a three-stage hardening of single crystal are developed. Stress-effect coefficients models are proposed in order to introduce stress information into the reaction-diffusion equations. A FD simulation for dislocation patterning and a FE one for crystal deformation are simultaneously carried out for an FCC single crystal. It is numerically predicted that a cell structures are repartitioned and the generated dislocation pattern in stage III can be regarded as a subgrain.

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Periodical:

Materials Science Forum (Volumes 503-504)

Pages:

989-994

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.503-504.989

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Online since:

January 2006

Authors:

Naoshi Yamaki, Yoshiteru Aoyagi, Kazuyuki Shizawa

Keywords:

Subgrains, Cell Structure, Crystal Plasticity, Dislocation, Multi-Scale Modelling, Self-Organization

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References

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DOI: 10.1007/978-1-4020-2111-4_9

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