典型文献
Chemical,microstructure,and mechanical property of TiAl alloys produced by high-power direct laser deposition
文献摘要：
Additive manufactured metals sometimes exhibit extraordinary microstructures and mechanical proper-ties due to the particular processes.In this paper,we focus on a novel gradient TiAl alloys fabricated by high-power direct laser deposition,whose chemical composition,microstructure,and mechanical prop-erty vary along the building direction.The results indicate that Al concentration dramatically decreases from 39.5 at.％to 30.1 at.％as the height increases from the bottom to the top.Meanwhile,microstruc-tural characterization indicates that the specimen appears basket-weave microstructure at the bottom,then the a2 and y phase gradually decrease,and eventually it transforms into acicular martensite mi-crostructure in the top region.The indentation analysis shows that the associated hardness increases as the height increases,while the plasticity reaches a minimum value in the middle region.The increasing amount ofβo(ω)is considered to be responsible for the increasing hardness because of the strong pre-cipitation strengthening effect.The high plasticity in the bottom and top regions results from the strong deformation behaviors of the γ and βo phases.
文献关键词：
中图分类号：
作者姓名：
Xinyu Zhang;Chuanwei Li;Mengyao Zheng;Xudong Yang;Zhenhua Ye;Jianfeng Gu
作者机构：
Institute of Materials Modification and Modeling,School of Materials Science and Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;Materials Genome Initiative Center,Shanghai Jiao Tong University,Shanghai 200240,China;Shanghai Key Laboratory of Materials Laser Processing and Modification,Shanghai Jiao Tong University,Shanghai 200240,China
文献出处：
引用格式：
[1]Xinyu Zhang;Chuanwei Li;Mengyao Zheng;Xudong Yang;Zhenhua Ye;Jianfeng Gu-.Chemical,microstructure,and mechanical property of TiAl alloys produced by high-power direct laser deposition)[J].材料科学技术（英文版）,2022(22):99-108
A类：
crostructure
B类：
Chemical,mechanical,property,TiAl,alloys,produced,by,high,power,laser,deposition,Additive,manufactured,metals,sometimes,exhibit,extraordinary,microstructures,ties,due,particular,processes,In,this,paper,focus,novel,gradient,fabricated,whose,chemical,composition,vary,along,building,direction,results,that,concentration,dramatically,decreases,from,height,increases,bottom,top,Meanwhile,tural,characterization,indicates,specimen,appears,basket,weave,a2,gradually,eventually,transforms,into,acicular,martensite,indentation,analysis,shows,associated,hardness,plasticity,reaches,minimum,value,middle,increasing,amount,considered,responsible,because,strong,pre,cipitation,strengthening,effect,regions,deformation,behaviors,phases
AB值：
0.556024
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