典型文献
Molecular dynamics study on microscale residual stress of graphene/aluminum nanocomposites by selective laser sintering
文献摘要：
The fabrication of graphene/metal matrix composites by selective laser sintering(SLS)technique has been exten-sively studied;however,the complex microstructure and residual stress limit their further applications.Herein,the sintering behavior of graphene/aluminum(Gr/Al)com-posites is studied using an all-atom model.The effect of sintering temperature and Al particle size on densification is investigated based on molecular dynamics(MD)simu-lations.The results reveal that the higher sintering tem-perature and smaller particle size are conducive to the improved sintering quality of Gr/Al composites.Then,a large-scale laser sintering model of Gr/Al composites is established and the sintering process is simulated using optimal sintering parameters.The evolution of microstructure and residual stress of Gr/Al composites during SLS are investigated in detail.The results indicate that the epitaxial growth of Al grains plays a dominant role in grain growth,promoting the formation of nanoscale single crystals.Therefore,stress concentration occurs at the voids,microcracks and Gr/Al interfaces,but not at the stacking faults.What's more,the distribution characteris-tics of residual stress components in Gr/Al composites are affected by Gr/Al interaction.
文献关键词：
中图分类号：
作者姓名：
Xing-Nan Hao;Xia Liu
作者机构：
Department of Engineering Mechanics,Beijing University of Technology,Beijing 100124,China
文献出处：
引用格式：
[1]Xing-Nan Hao;Xia Liu-.Molecular dynamics study on microscale residual stress of graphene/aluminum nanocomposites by selective laser sintering)[J].稀有金属（英文版）,2022(11):3677-3683
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B类：
Molecular,dynamics,study,microscale,residual,stress,graphene,aluminum,nanocomposites,by,selective,laser,sintering,fabrication,metal,matrix,SLS,technique,has,been,exten,sively,studied,however,complex,microstructure,limit,their,further,applications,Herein,behavior,Gr,using,atom,model,effect,temperature,particle,size,densification,investigated,molecular,MD,lations,results,reveal,that,higher,smaller,are,conducive,improved,quality,Then,large,established,process,simulated,optimal,parameters,evolution,during,detail,indicate,epitaxial,growth,grains,plays,dominant,role,promoting,formation,nanoscale,single,crystals,Therefore,concentration,occurs,voids,microcracks,interfaces,not,stacking,faults,What,more,distribution,characteris,tics,components,affected,interaction
AB值：
0.511924
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