|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Powder Metallurgy of Light Metals
||Development of Powder Metallurgical Ti- Ta-Mo Alloys with High Strength and Low Modulus
||Yong Liu, Shenghang Xu, Hong Wu, Huiping Tang
|On-Site Speaker (Planned)
Ti-Ta and Ti-Mo alloys are both promising biomedical materials due to their low elastic modulus. In this work, Ti-Ta-Mo alloys were prepared by sintering elemental powders. The microstructures and mechanical properties were evaluated. The results indicated that Mo can dissolve effectively in the Ti matrix, while Ta can only partially diffuse in Ti, and thus, powder metallurgy Ti-Ta-Mo alloys contain Ti-To-rich matrix and Ta-rich areas. The existence of Mo hindered the sintering ability of the powder, and the alloy contained a high porosity at a high content of Mo. This effect make it possible to sinter Ti-Ta-Mo alloys at very high temperature (1400~1500 C). In such a way, although the alloys are not fully dense, they show high strength due to fine-grained microstructures, and low modulus due to the retaining of porosity. The relationships between the processing parameters, microstructures and mechanical properties were studied in detail.
||Planned: EPD Congress Volume