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Analysis of reversed torsion of FCC metals using polycrystal plasticity models

Journal Article · · International Journal of Applied Mechanics
 [1];  [2];  [3];  [1]
  1. China Univ. of Mining and Technology, Jiangsu (People's Republic of China)
  2. McMaster Univ., Hamilton, ON (Canada); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  3. McMaster Univ., Hamilton, ON (Canada)
+ Show Author Affiliations
Large strain behavior of FCC polycrystals during reversed torsion are investigated through the special purpose finite element based on the classical Taylor model and the elastic-viscoplastic self-consistent (EVPSC) model with various Self-Consistent Schemes (SCSs). It is found that the response of both the fixed-end and free-end torsion is very sensitive to the constitutive models. The models are assessed through comparing their predictions to the corresponding experiments in terms of the stress and strain curves, the Swift effect and texture evolution. It is demonstrated that none of the models examined can precisely predict all the experimental results. However, more careful observation reveals that, among the models considered, the tangent model gives the worst overall performance. As a result, it is also demonstrated that the intensity of residual texture during reverse twisting is dependent on the amounts of pre-shear strain during forward twisting and the model used.
Research Organization:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC52-06NA25396
OSTI ID:
1329677
Report Number(s):
LA-UR--15-22887
Journal Information:
International Journal of Applied Mechanics, Journal Name: International Journal of Applied Mechanics Journal Issue: 03 Vol. 07; ISSN 1758-8251
Publisher:
World ScientificCopyright Statement
Country of Publication:
United States
Language:
English

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Related Subjects

42 ENGINEERING
copper
crystal plasticity
reversed torsion
swift effect
texture