典型文献
Selective laser melting of dense and crack-free AlCoCrFeNi2.1 eutectic high entropy alloy:Synergizing strength and ductility
文献摘要：
Additively manufactured high-entropy alloys generally suffer from low strength and/or poor ductility.In this work,by leveraging the good castability of eutectic high entropy alloys and high cooling rate of se-lective laser melting(SLM),we report a nearly fully dense and crack-free as-SLM AICoCrFeNi2.11 eutectic high entropy alloy with an exceptional strength-ductility synergy,showing an ultrahigh yield strength of 982.1±35.2 MPa and an ultimate tensile strength of 1322.8±54.9 MPa together with an elongation to fracture of 12.3±0.5％.Such strength-ductility enhancement is owing to the heterogeneous eutectic mi-crostructure consisting of the columnar,equiaxed,and"L-shape"cells with much refined sizes down to nanoscales.The morphology of cells in the transition zone is related to the misorientation between the growth direction of adjacent layers.This heterogeneous eutectic microstructure is the result of the grain-growth behavior dominated by the mechanisms of the epitaxial growth and growth of heterogeneous nuclei in SLM.Our current results provide a new methodology for the future design of ultrahigh-strength and ductile SLM-fabricated metallic materials including HEAs,and other printable alloys for various struc-tural applications.
文献关键词：
中图分类号：
作者姓名：
Lin He;Shiwei Wu;Anping Dong;Haibin Tang;Dafan Du;Guoliang Zhu;Baode Sun;Wentao Yan
作者机构：
Shanghai Key Lab of Advanced High-temperature Materials and Precision Forming and State Key Lab of Metal Matrix Composites,School of Materials Science and Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;Department of Mechanical Engineering,National University of Singapore,117575,Singapore;School of Intelligent Manufacturing,Nanjing University of Science and Technology,Nanjing 210094,China
文献出处：
引用格式：
[1]Lin He;Shiwei Wu;Anping Dong;Haibin Tang;Dafan Du;Guoliang Zhu;Baode Sun;Wentao Yan-.Selective laser melting of dense and crack-free AlCoCrFeNi2.1 eutectic high entropy alloy:Synergizing strength and ductility)[J].材料科学技术（英文版）,2022(22):133-145
A类：
Synergizing,AICoCrFeNi2,crostructure
B类：
Selective,laser,melting,dense,crack,free,AlCoCrFeNi2,eutectic,entropy,strength,ductility,Additively,manufactured,alloys,generally,suffer,from,low,poor,In,this,work,by,leveraging,good,castability,cooling,rate,SLM,report,nearly,fully,exceptional,synergy,showing,ultrahigh,yield,ultimate,tensile,together,elongation,fracture,Such,enhancement,heterogeneous,consisting,columnar,equiaxed,shape,cells,much,refined,sizes,down,nanoscales,morphology,transition,zone,related,misorientation,between,growth,direction,adjacent,layers,This,microstructure,grain,behavior,dominated,mechanisms,epitaxial,nuclei,Our,current,results,provide,new,methodology,future,design,ductile,fabricated,metallic,materials,including,HEAs,other,printable,various,tural,applications
AB值：
0.546904
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