典型文献
Effect of processing parameters on formability, microstructure, and micro-hardness of a novel laser additive manufactured Ti-6.38Al-3.87V-2.43Mo alloy
文献摘要：
A novel Ti-6.38Al-3.87V-2.43Mo alloy was designed with a cluster formula of 12[Al-Ti12] (V0.75Mo0.25Ti2)+4[Al-Ti12](Al3) by replacing Ti with Mo/V on the basis of the Ti-Al congruent alloy. The effects of laser power and scanning speed on the molten pool size, surface roughness, relative density, microstructure, and micro-hardness of single-track and bulk Ti-6.38Al-3.87V-2.43Mo samples prepared via laser additive manufacturing (LAM) were investigated. The results show that processing parameters significantly affect the formability, microstructure, and micro-hardness of the alloy. With decreasing laser power from 1,900 W to 1,000 W, the relative density is decreased from 99.86％ to 90.91％ due to the increase of lack-of-fusion; however, with increasing scanning speed, the relative density does not change significantly, but exceeds 99％. In particular, Ti-6.38Al-3.87V-2.43Mo samples of single-track and bulk exhibit a good formability under an input laser power of 1,900 W and a scanning speed of 8 mm·s-1, and display the lowest surface roughness (Ra=13.33 μm) and the highest relative density (99.86％). Besides, the microstructure of LAM Ti-6.38Al-3.87V-2.43Mo alloy coarsens with increasing laser power or decreasing scanning speed due to the greater input energy reducing the cooling rate. The coarsening of the microstructure decreases the microhardness of the alloy.
文献关键词：
中图分类号：
作者姓名：
Tian-yu Liu;Zhi-hao Zhu;Shuang Zhang;Xiao-hua Min;Chuang Dong
作者机构：
School of Materials Science and Engineering,Dalian University of Technology,Dalian 116024,Liaoning,China;School of Materials Science and Engineering,Dalian Jiaotong University,Dalian 116028,Liaoning,China
文献出处：
引用格式：
[1]Tian-yu Liu;Zhi-hao Zhu;Shuang Zhang;Xiao-hua Min;Chuang Dong-.Effect of processing parameters on formability, microstructure, and micro-hardness of a novel laser additive manufactured Ti-6.38Al-3.87V-2.43Mo alloy)[J].中国铸造,2022(02):158-168
A类：
38Al,87V,43Mo,Ti12,75Mo0,25Ti2
B类：
Effect,processing,parameters,formability,microstructure,novel,laser,additive,manufactured,alloy,was,designed,cluster,formula,V0,+4,Al3,by,replacing,basis,congruent,effects,power,scanning,speed,molten,pool,size,surface,roughness,relative,density,single,track,bulk,samples,prepared,via,manufacturing,LAM,were,investigated,results,show,that,significantly,affect,With,decreasing,from,decreased,due,increase,lack,fusion,however,increasing,does,not,change,but,exceeds,In,particular,exhibit,good,under,input,display,lowest,Ra,highest,Besides,coarsens,greater,energy,reducing,cooling,rate,coarsening,decreases,microhardness
AB值：
0.394708
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