An intrinsic correlation between driving force and energy barrier upon grain boundary migration
作者： Bo Lin , Kang Wang , Feng Liu , Yaohe Zhou
DOI: 10.1016/J.JMST.2017.11.002
关键词:
摘要: Abstract The migration of grain boundary (GB), which plays a key role in the microstructural evolution polycrystalline materials, remains mysterious due to unknown relationship between GB mobility associated with specific geometry and external conditions (e.g. temperature, stress, etc., hence thermodynamic driving force). Combining rate equation molecular dynamics simulations, an intrinsic correlation force energy barrier for various types GBs (i.e. twist, symmetric tilt, asymmetric mixed twist-tilt) is herein explored, showing decrease increasing force.
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