Effect of grain boundary segregation of Co or Ti on cyclic deformation of aluminium bi-crystals

Rita I. Babicheva,Sergey V. Dmitriev,Dmitry V. Bachurin,Narasimalu Srikanth,Ying Zhang,Shaw Wei Kok,Kun Zhou

International Journal of Fatigue（2017）

引用 25|浏览12

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摘要

•Cycling of Al bi-crystal leads to perfect dislocation sliding followed by twinning.•Co and Ti in GBs of Al inhibit formation of perfect dislocations and twins.•Co and Ti in GBs promote partial dislocation slip during cycling of Al bi-crystal.•GB segregation can decrease ductility and cracking rate during nanomaterial cycling.

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关键词

Aluminum alloys,Cracks,Cyclic stress/strain curve,Dislocations,Molecular dynamics

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