Indentation-induced plastic behaviour of nanotwinned Cu/high entropy alloy FeCoCrNi nanolaminate: an atomic simulation
作者： Hui Feng , Jingwen Tang , Haotian Chen , Yuanyuan Tian , Qihong Fang
DOI: 10.1039/D0RA00518E
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摘要: Using large-scale molecular dynamics (MD) simulations, the effects of interface and layer number in nanoindentation response experimentally observed nanotwinned Cu/high entropy alloy (HEA) FeCoCrNi nanolaminate are studied. The dislocations nucleated emitted, which more limited to first twinning > second HEA layer. stacking fault strengthening is pronounced due obvious difference energy between Cu HEA, can be rarely from previous work traditional alloys metals. After indentation induced deformation, Cu/HEA nanolaminates for different numbers generate a mass Shockley partial cause good plasticity, attributed strong strain gradient effect. structure found here provide insight design advanced with high strength plasticity.
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