A phenomenological model of twinning-mediated strain hardening

DOI: 10.1016/j.msea.2020.139194

Авторы: Алексей Виноградов, Эйнар Аглетдинов, Игорь Ясников

Журнал: Materials Science & Engineering A: Structural Materials: Properties Microstructure and Processing

Дата публикации: апрель 2020 года

Квартиль: Q1

База Данных: Web of Science

Область исследования: Материаловедение

Аннотация:

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.