Analysis of crystallographic twinning and slip in fcc crystals under plane strain compression

Release time:2021-10-21

DOI number:10.1016/j.msea.2007.03.081

Journal:Materials Science and Engineering A

Key Words:Twinning; Slip; Texture; Deformation mechanism; Plane strain compression

Abstract:The Bishop–Hill maximum work principle was applied to analyze the contribution of {111}〈110〉 slip and {111}〈112〉 twinning to the deformation of face-centered cubic crystals under plane strain compression. The influence of ξ, the ratio of critical resolved shear stress for twinning to that for slip, on the yield stress states and the selection of active systems for main ideal orientations of interest was investigated. The results showed that twinning is difficult for the {100}〈001〉, {110}〈001〉 and {112}〈110〉 orientations, and becomes easier for the {110}〈112〉, {112}〈111〉, {123}〈634〉, {110}〈111〉 and {110}〈110〉 orientations. Compared with pure slip, the yield strength anisotropy decreases with the introduction of twinning. A factor based on the Taylor factors was introduced to describe the twinning ability of different orientations. The analytical results are in qualitative agreement with the experimental rolling textures in a Cu5%Zn alloy. The effect of the ξ on the rolling texture development at the polycrystalline level was also illustrated by simulations using the full constraints Taylor model.

Co-author:H.N. Cai, S.Y. Li, X.M. Zhang, F.C. Wang, C.W. Tan

First Author:Z.Y. Chen*

Indexed by:Journal paper

Discipline:Engineering

First-Level Discipline:Materials Science and Engineering

Document Type:J

Volume:464

Issue:1–2

Page Number:101-109

ISSN No.:0921-5093

Translation or Not:no

Date of Publication:2007-08-25

Included Journals:SCI