Roles of texture and latent hardening on plastic anisotropy of face-centered-cubic materials during multi-axial loading

Published: February 17, 2017

Author(s)

Minh-Son Pham, Adam A. Creuziger, Mark A. Iadicola, Anthony D. Rollett

Abstract

This study presents some insights into the relationships between texture, latent hardening and plastic anisotropy of face-centered-cubic materials. The separate influences of typical texture components (e.g., Random, Cube, Copper, S, Brass and Goss) on the plastic anisotropy were investigated using a visco-plastic self-consistent crystal plasticity framework. The collinear, coplanar, Hirth, and Lomer-Cottrell types of dislocation interactions were then added into the crystal plasticity framework to study the roles of latent hardening on the plastic anisotropy with and without the presence of preferred textures. The present study shows that the anisotropy in plastic yielding inherently and strongly relates to the texture condition with the Goss texture causes the most anisotropic yielding. However, latent hardening significantly alters the anisotropy induced by preferred textures (in particular for Copper, S, Brass and Goss). The Lomer-Cottrell together with S texture lead to the most complex anisotropy for FCC materials. In addition, an individual latent hardening source can have opposite effects on plastic anisotropy compared to other hardening latent sources under the presence of the same texture condition. Therefore, a treatment of all non-self-hardening as the same cannot reveal the complexity of plastic anisotropy. The insights obtained from this study provide valuable information in order to understand the texture-latent hardening-anisotropy relationships.
Citation: Journal of the Mechanics and Physics of Solids
Pub Type: Journals

Keywords

Texture, Latent Hardening, Dislocations, Dislocation Interaction, Anisotropy, Crystal Plasticity
Created February 17, 2017, Updated March 17, 2017