| Microstructures and mechanical behavior of PM Ti-Mo alloy |
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| 作者姓名： | LIU Yong |
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| 作者单位： | State Key Laboratory for Powder Metallurgy，Central South University，State Key Laboratory for Powder Metallurgy，Central South University，State Key Laboratory for Powder Metallurgy，Central South University，State Key Laboratory for Powder Metallurgy，Central South University，Northwest Nonferrous Metals Research Institute Changsha 410083，China，Changsha 410083，China，Changsha 410083，China，Changsha 410083，China，Xi′an 710016，China |
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| 基金项目： | TheNationalAdvancedMaterialsCommitteesofChina (No .2 0 0 1AA3 3 2 0 10 ) |
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| 摘 要： | 1 INTRODUCTIONTitaniumalloyshavebecomewidelyusedbioma terialsforhigh loadimplants ,becauseoftheirgoodbiocompatibility ,excellentcorrosionresistance ,lowdensityandhighspecificstrength .Ti 6Al 4V ,withahighstrengthandagoodmachine ability ,hasbeenthemostsuccessfullyusedTialloyinclinicalapplica tion 1 5] .However ,recentlyscientistshavefoundthatAlandVelementsinthisalloywilldoharmtohumanorganisms ,andshouldbesubstitutedbyothermorehost friendlyelements ,forexample ,Nb ,Zr ,FeandMo6 10 ] …
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| 收稿时间： | 19 November 2002 |
Microstructures and mechanical behavior of PM Ti-Mo alloy |
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| Liu Yong , Wei Wei-feng , Zhou Ke-chao , Chen Li-fang and Tang Hui-pin.Microstructures and mechanical behavior of PM Ti-Mo alloy[J].Journal of Central South University of Technology,2003,10(2):81-86. |
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| Authors: | Liu Yong Wei Wei-feng Zhou Ke-chao Chen Li-fang and Tang Hui-pin |
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| Affiliation: | (1) State Key Laboratory for Powder Metallurgy, Central South University, 410083 Changsha, China;(2) Northwest Nonferrous Metals Research Institute, 710016 Xi’an, China |
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| Abstract: | The effects of the addition of Mo on the densification mechanism, microstructure evolution and mechanical strength of blended
elemental powder metallurgy Ti-Mo alloy were investigated in this work. The results show that the addition of Mo hinders the
densification of Ti-Mo alloy due to the low diffusion rate of Mo atoms in β-Ti matrix, and the increase of Mo content worsens the sinterability of Ti-Mo alloy. However, the addition of Mo can also
refine the microstructure of Ti-Mo alloy greatly, and raising sintering temperature can effectively increase the alloy density
without grain coarsening. When neglecting the relative density factor, the addition of Mo refines the microstructure, and
improves the mechanical strength by Hall-Petch relationship.
Foundation item: The National Advanced Materials Committees of China (No. 2001AA332010)
Biography of the first author: LIU Yong, PhD, associate professor, born in 1973, majoring in powder metallurgy. |
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| Keywords: | biomedical alloy Ti-Mo alloy powder metallurgy |
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