典型文献
Molecular dynamics simulation of rhenium effects on creep behavior of Ni-based single crystal superalloys
文献摘要：
The tensile creep behavior of Ni-based single crystal superalloys was investigated by molecular dynamics simu-lations.The effects of rhenium(Re)on the creep behavior and microstructural evolution mechanism during nanoscale creep tests were discussed.The results indicate that the addition of Re can effectively enhance the creep resistance of the alloys.The reason is that Re plays an important role in the evolution of microstructure at each stage of the creep.Firstly,Re has a pinning effect to delay the failure of the dislocation network at the primary creep stage.And then,the addition of Re decreases dislocation density and increases steady creep time at the steady-state creep.Finally,Re segregates at the dislocations in the γ'precipitates phase and prevents the dislo-cation from cutting into the γ'phase by dragging dislocations at the tertiary creep stage,which enhances effec-tively the creep resistance of superalloys.These mechanisms help to further understand the creep behavior and derive an atomistic description of the Re effects on creep behavior and creep mechanisms in Ni-based single crystal superalloys.
文献关键词：
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作者姓名：
Wenping Wu;Bin Chen;Hongfei Shen;Zijun Ding
作者机构：
Department of Engineering Mechanics,School of Civil Engineering,Wuhan University,Wuhan,430072,China;State Key Laboratory of Water Resources&Hydropower Engineering Science,Wuhan University,Wuhan,430072,China
文献出处：
引用格式：
[1]Wenping Wu;Bin Chen;Hongfei Shen;Zijun Ding-.Molecular dynamics simulation of rhenium effects on creep behavior of Ni-based single crystal superalloys)[J].自然科学进展·国际材料（英文）,2022(02):259-266
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Molecular,dynamics,simulation,rhenium,effects,creep,behavior,single,crystal,superalloys,tensile,was,investigated,by,molecular,lations,Re,microstructural,evolution,during,nanoscale,tests,were,discussed,results,indicate,that,addition,can,effectively,resistance,reason,plays,important,role,microstructure,each,stage,Firstly,pinning,delay,failure,network,primary,And,then,decreases,density,increases,steady,state,Finally,segregates,dislocations,precipitates,phase,prevents,from,cutting,into,dragging,tertiary,which,enhances,These,mechanisms,help,further,understand,derive,atomistic,description
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0.436648
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