Effect of Plastic Incompatibility on the Strain Hardening Behavior of Al-TiN Nanolayered Composites

Abstract

The strain hardening behavior of Al-TiN nanolayered composites induced by plastic incompatibility was studied by 3-D discrete dislocation dynamics (DDD) simulations. Our simulations results indicate the strain hardening rate solely induced by the plastic incompatibility is independent of layer thickness and dislocation density at a constant layer thickness ratio, while the yield stress exhibits a strong size effect. Furthermore, the strain hardening rate increases with decreasing Al/TiN layer thickness ratio and our predicted results match well with prior experiment data.

Department(s)

Materials Science and Engineering

Research Center/Lab(s)

Center for High Performance Computing Research

Keywords and Phrases

Hardening; Strain Hardening; Strain Rate; Titanium Compounds; Titanium Nitride; Yield Stress; Discrete Dislocation Dynamics; Dislocation Densities; Experiment Data; Layer Thickness; Layer Thickness Ratio; Size Effects; Strain Hardening Behavior; Strain Hardening Rate; Aluminum

International Standard Serial Number (ISSN)

0921-5093

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2015 Elsevier Ltd, All rights reserved.

Publication Date

01 Jun 2015

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