Structural characteristics and mechanical properties of biomedical porous Ti-10Mo alloy fabricated by selective laser sintering

Fangxia Xie, Xin Lu, Xinbo He, Xuanhui Qu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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.

Original languageEnglish
Title of host publicationPowder Metallurgy of Titanium
Subtitle of host publicationPowder Processing, Consolidation and Metallurgy of Titanium
PublisherTrans Tech Publications Ltd
Pages234-241
Number of pages8
ISBN (Print)9783037854686
DOIs
Publication statusPublished - 2012 Jan 1
Externally publishedYes
Event1st International Conference on Powder Processing, Consolidation and Metallurgy of Titanium - Brisbane, QLD, Australia
Duration: 2011 Dec 42011 Dec 7

Publication series

NameKey Engineering Materials
Volume520
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795

Other

Other1st International Conference on Powder Processing, Consolidation and Metallurgy of Titanium
CountryAustralia
CityBrisbane, QLD
Period11/12/411/12/7

Keywords

  • Mechanical properties
  • Porosity
  • Selective laser sintering
  • Ti-10Mo alloy

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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  • Cite this

    Xie, F., Lu, X., He, X., & Qu, X. (2012). Structural characteristics and mechanical properties of biomedical porous Ti-10Mo alloy fabricated by selective laser sintering. In Powder Metallurgy of Titanium: Powder Processing, Consolidation and Metallurgy of Titanium (pp. 234-241). (Key Engineering Materials; Vol. 520). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/KEM.520.234