TiH2-based Ti-1Al-8V-5Fe PM alloys with different addition methods of alloying elements |
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| Authors: | Yanan Zhang Chunming Wang Yeguang Zhang Yuhang Wei Sufen Xiao |
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| Affiliation: | 1. School of Aeronautics and Astronautics, Sichuan University, Chengdu, China;2. College of Materials Science and Engineering, Sichuan University, Chengdu, China |
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| Abstract: | The powder metallurgy high-strength Ti-1Al-8V-5Fe alloy (Ti-185 alloy) was investigated in this paper with different addition methods of alloying elements, Al, V, Fe pure elements powder (EP) or 1Al-8V-5Fe ternary master alloy powder (MAP), based on TiH2 powders at the sintering temperature from 1150 to 1350°C. The results indicate that the Ti-185 alloy with the 1Al-8V-5Fe master alloy (Ti-185 MAP alloy) possesses the higher relative sintered density, less oxygen content, and less α-phase volume fraction versus the Ti-185 alloy with Al, V, and Fe pure elements (Ti-185 EP alloy). No matter where the sintering temperature is 1150, 1250, or 1350°C, Ti-185 MAP alloy invariably has the higher yield strength and hardness which have a strong relationship to its higher density and less volume fraction of softer α-phase in comparison with Ti-185 EP alloy. |
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| Keywords: | Alloys blend elements metallurgy powder sintering Ti-1Al-8V-5Fe TiH2 |
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