TY - GEN
T1 - Structural characteristics and mechanical properties of biomedical porous Ti-10Mo alloy fabricated by selective laser sintering
AU - Xie, Fangxia
AU - Lu, Xin
AU - He, Xinbo
AU - Qu, Xuanhui
N1 - Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2012
Y1 - 2012
N2 - Ti-Mo alloy is one of the most prospective metallic biomaterials for implant application because of its low elastic modulus, high corrosion resistance and tissue compatibility. A complex-shaped porous Ti-10Mo alloy from a mixture of elemental metal powders and polymer binders was processed by selective laser sintering forming, followed by thermal debinding and sintering in vacuum. The effects of processing parameters on structural characteristics and mechanical properties were studied. The results indicate that the pore characteristic parameters, matrix microstructure and mechanical properties strongly depend on the sintering temperature. Specimens sintered at 1100 °C exhibit a higher porosity of 52.41%, and possess many three-dimensionally interconnected pores with an average size of 200 μm, and the matrix is dominated by α and β phases, and meanwhile the alloy exhibits a compressive yield strength of 95.59 MPa and an elastic modulus of 4.89 GPa at room temperature. With the rise in sintering temperature, both the porosity and the average pore size of specimens gradually decrease, and the interconnected pores tend to be closed. Specimens sintered at 1400 °C are characterized by a porosity of 26.32% and an average pore size of 60 μm with a compressive yield strength of 440 MPa and an elastic modulus of 35.26 GPa.
AB - Ti-Mo alloy is one of the most prospective metallic biomaterials for implant application because of its low elastic modulus, high corrosion resistance and tissue compatibility. A complex-shaped porous Ti-10Mo alloy from a mixture of elemental metal powders and polymer binders was processed by selective laser sintering forming, followed by thermal debinding and sintering in vacuum. The effects of processing parameters on structural characteristics and mechanical properties were studied. The results indicate that the pore characteristic parameters, matrix microstructure and mechanical properties strongly depend on the sintering temperature. Specimens sintered at 1100 °C exhibit a higher porosity of 52.41%, and possess many three-dimensionally interconnected pores with an average size of 200 μm, and the matrix is dominated by α and β phases, and meanwhile the alloy exhibits a compressive yield strength of 95.59 MPa and an elastic modulus of 4.89 GPa at room temperature. With the rise in sintering temperature, both the porosity and the average pore size of specimens gradually decrease, and the interconnected pores tend to be closed. Specimens sintered at 1400 °C are characterized by a porosity of 26.32% and an average pore size of 60 μm with a compressive yield strength of 440 MPa and an elastic modulus of 35.26 GPa.
KW - Mechanical properties
KW - Porosity
KW - Selective laser sintering
KW - Ti-10Mo alloy
UR - http://www.scopus.com/inward/record.url?scp=84867962494&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84867962494&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/KEM.520.234
DO - 10.4028/www.scientific.net/KEM.520.234
M3 - Conference contribution
AN - SCOPUS:84867962494
SN - 9783037854686
T3 - Key Engineering Materials
SP - 234
EP - 241
BT - Powder Metallurgy of Titanium
PB - Trans Tech Publications Ltd
T2 - 1st International Conference on Powder Processing, Consolidation and Metallurgy of Titanium
Y2 - 4 December 2011 through 7 December 2011
ER -