Role of Ti3Al/silicides on tensile properties of Timetal 834 at various temperatures |
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| Authors: | K. V. Sai Srinadh Nidhi Singh V. Singh |
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| Affiliation: | (1) Department of Metallurgical Engineering, Institute of Technology, Banaras Hindu University, Varanasi, 221 005, India;(2) Department of Mechanical Engineering, National Institute of Technology, Warangal, 506 004, India;(3) National Metallurgical Laboratories Madras Centre, CSIR Madras Complex, Chennai, 600 013, India |
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| Abstract: | Extremely fine coherent precipitates of ordered Ti3Al and relatively coarse incoherent precipitates of S2 silicide exist together in the near α-titanium alloy, Timetal 834, in the dual phase matrix of primary α and transformed β. In order to assess the role of these precipitates, three heat treatments viz. WQ, WQ-A and WQ-OA, were given to have no precipitates, Ti3Al and silicide and only silicide precipitates in the respective conditions. Tensile properties in the above three heat treated conditions were determined at room temperature, 673 K and 873 K. It was observed that largely Ti3Al precipitates were responsible for increase in the yield strength and decrease in ductility in this alloy. |
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| Keywords: | Near α -titanium alloy Timetal 834 Ti3Al/silicide precipitates tensile properties |
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