TY - GEN
T1 - Usability of Ti6Al4V powder via hydride-dehydride process for selective laser melting process
AU - Sato, Naoko
AU - Ito, Masaki
AU - Izumida, Takayuki
AU - Shimizu, Toru
AU - Nakano, Shizuka
N1 - Publisher Copyright:
© 2017 Trans Tech Publications, Switzerland.
PY - 2017
Y1 - 2017
N2 - Spherical powders via gas atomization etc. are recommended for use in SLM, however, the spherical powders are expensive and able to make in limited types of metal materials. Using non-spherical powder in SLM are capable of applying SLM to cheap part production and diversify powder materials for SLM. In this paper, to study the feasibility of using Ti6Al4V milled powder via hydride-dehydride method for SLM, characteristics of powders, powder bed performances, and SLM fabricated samples made from gas atomization powder and milled powder were analyzed and compared. The milled powder which added a fumed silica as a lubricant were also analyzed. In the results, flow and packing characteristics of the milled powder are lower than the gas atomized one. The characteristics of the milled powder are improved by adding fumed silica as lubricant, and had comparable characteristics to the gas atomized one. Microstructure of the SLM fabricated samples has a comparable size and morphology regardless of powders. Hardness of the SLM fabricated sample made from milled powder are larger than that of it made from gas atomized powder, owing to solid solution hardening by oxygen.
AB - Spherical powders via gas atomization etc. are recommended for use in SLM, however, the spherical powders are expensive and able to make in limited types of metal materials. Using non-spherical powder in SLM are capable of applying SLM to cheap part production and diversify powder materials for SLM. In this paper, to study the feasibility of using Ti6Al4V milled powder via hydride-dehydride method for SLM, characteristics of powders, powder bed performances, and SLM fabricated samples made from gas atomization powder and milled powder were analyzed and compared. The milled powder which added a fumed silica as a lubricant were also analyzed. In the results, flow and packing characteristics of the milled powder are lower than the gas atomized one. The characteristics of the milled powder are improved by adding fumed silica as lubricant, and had comparable characteristics to the gas atomized one. Microstructure of the SLM fabricated samples has a comparable size and morphology regardless of powders. Hardness of the SLM fabricated sample made from milled powder are larger than that of it made from gas atomized powder, owing to solid solution hardening by oxygen.
KW - Gas atomized powder
KW - Milled powder
KW - Selective laser melting
KW - Ti6Al4V
UR - http://www.scopus.com/inward/record.url?scp=85000360897&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85000360897&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/MSF.879.1698
DO - 10.4028/www.scientific.net/MSF.879.1698
M3 - Conference contribution
AN - SCOPUS:85000360897
SN - 9783035711295
T3 - Materials Science Forum
SP - 1698
EP - 1702
BT - THERMEC 2016
A2 - Sommitsch, Christof
A2 - Ionescu, Mihail
A2 - Mishra, Brajendra
A2 - Mishra, Brajendra
A2 - Kozeschnik, Ernst
A2 - Chandra, T.
PB - Trans Tech Publications Ltd
T2 - 9th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC 2016
Y2 - 29 May 2016 through 3 June 2016
ER -