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A Phenomenological Model of Twinning Kinetics
Author(s) -
Vinogradov Alexei,
Vasilev Evgeny,
Merson Dmitry,
Estrin Yuri
Publication year - 2017
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.201600092
Subject(s) - crystal twinning , materials science , volume fraction , phenomenological model , deformation (meteorology) , stress (linguistics) , volume (thermodynamics) , mechanics , thermodynamics , metallurgy , statistical physics , condensed matter physics , microstructure , composite material , physics , linguistics , philosophy
We present a model of deformation twinning based on the idea that twin generation is a stress‐driven process. Using simple, yet sensible, assumptions regarding the grain size distribution, an equation for the variation of the twin volume fraction with the flow stress is obtained. The model is validated for the case of Mg alloy ZK60 through measurements of the evolving volume fraction of twins by means of direct video observation of the specimen surface and by monitoring the acoustic emission signals.