TY - JOUR
T1 - A phenomenological model of twinning-mediated strain hardening
AU - Vinogradov, Alexei
AU - Agletdinov, Einar
AU - Yasnikov, Igor S.
AU - Máthis, Kristián
AU - Estrin, Yuri
PY - 2020/4/7
Y1 - 2020/4/7
N2 - We present a model of strain-hardening in materials with twinning-mediated plasticity. While the model is largely phenomenological, it was motivated by microstructural considerations and can be claimed to be physically sound. Using simple, yet sensible, assumptions regarding the stress-driven twinning kinetics and dislocation-twin interactions, constitutive equations governing the strain hardening behaviour were obtained and solved numerically. The solutions were compared with the experimental data on uniaxial deformation of pure magnesium and Mg alloy ZK60, and this comparison substantiated the validity and practicality of the model proposed.
AB - We present a model of strain-hardening in materials with twinning-mediated plasticity. While the model is largely phenomenological, it was motivated by microstructural considerations and can be claimed to be physically sound. Using simple, yet sensible, assumptions regarding the stress-driven twinning kinetics and dislocation-twin interactions, constitutive equations governing the strain hardening behaviour were obtained and solved numerically. The solutions were compared with the experimental data on uniaxial deformation of pure magnesium and Mg alloy ZK60, and this comparison substantiated the validity and practicality of the model proposed.
KW - Dislocation-twin interaction
KW - Magnesium
KW - Phenomenological modelling
KW - Strain hardening
KW - Twinning
UR - http://www.scopus.com/inward/record.url?scp=85080980014&partnerID=8YFLogxK
U2 - 10.1016/j.msea.2020.139194
DO - 10.1016/j.msea.2020.139194
M3 - Article
AN - SCOPUS:85080980014
SN - 0921-5093
VL - 780
JO - Materials Science and Engineering A
JF - Materials Science and Engineering A
M1 - 139194
ER -