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典型文献
Comparison of microstructure and mechanical behavior of Ti-35Nb manufactured by laser powder bed fusion from elemental powder mixture and prealloyed powder
文献摘要:
Although different types of powder feedstock are used for additive manufacturing via laser powder bed fusion(L-PBF),limited work has attempted to directly compare the microstructure and mechanical be-havior of components manufactured from those powder feedstock.This work investigated the microstruc-ture,phase composition,melt pool morphology,and mechanical properties of a prealloyed Ti-35Nb alloy manufactured using L-PBF and compared these to their counterparts produced from elemental powder mixture.The samples manufactured from the powder mixture are composed of randomly distributed undissolved Nb in the α/β matrix,resulting from the unstable melt pool during the melting of the pow-der mixture.By contrast,parts produced from prealloyed powder display a homogeneous microstructure with β and α"phases,owing to the full melting of prealloyed powder,therefore,a more stable melt pool to achieve a homogeneous microstructure.The Ti-35Nb manufactured from prealloyed powder ex-hibits large tensile ductility(about 10 times that of the counterparts using mixed powder),attributed to the high homogeneity in microstructure and chemical composition,strong interface bonding,relatively low oxygen content,and the existence of a large amount of β phase.This work sheds insights into un-derstanding the effect of powder feedstock on the melt pool stability therefore the microstructure and mechanical behavior of the resultant parts.
文献关键词:
作者姓名:
J.C.Wang;Y.J.Liu;S.X.Liang;Y.S.Zhang;L.Q.Wang;T.B.Sercombe;L.C.Zhang
作者机构:
School of Engineering,Edith Cowan University,270 Joondalup Drive,Joondalup,Perth,WA 6027,Australia;School of Engineering,M050,The University of Western Australia,35 Stirling Highway,Crawley,Perth,WA 6009,Australia;Northwest Institute for Nonferrous Metal Research,Xi'an 710016,China;State Key Laboratory of Metal Matrix Composites,School of Material Science and Engineering,Shanghai Jiao Tong University,Shanghai 200240,China
引用格式:
[1]J.C.Wang;Y.J.Liu;S.X.Liang;Y.S.Zhang;L.Q.Wang;T.B.Sercombe;L.C.Zhang-.Comparison of microstructure and mechanical behavior of Ti-35Nb manufactured by laser powder bed fusion from elemental powder mixture and prealloyed powder)[J].材料科学技术(英文版),2022(10):1-16
A类:
prealloyed,undissolved
B类:
Comparison,microstructure,mechanical,behavior,Ti,35Nb,manufactured,by,laser,powder,bed,fusion,from,elemental,mixture,Although,different,types,feedstock,used,additive,manufacturing,via,PBF,limited,work,attempted,directly,components,those,This,investigated,composition,pool,morphology,properties,using,compared,these,their,counterparts,produced,samples,composed,randomly,distributed,matrix,resulting,unstable,during,melting,By,contrast,display,homogeneous,phases,owing,full,therefore,more,achieve,hibits,large,tensile,ductility,about,times,that,mixed,attributed,high,homogeneity,chemical,strong,interface,bonding,relatively,low,oxygen,content,existence,amount,sheds,insights,into,derstanding,effect,stability,resultant
AB值:
0.420362
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