Effect of boron on microstructure and mechanical properties of thermomechanically processed near alpha titanium alloy Ti-1100 |
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Authors: | VK Chandravanshi R SarkarSV Kamat TK Nandy |
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Affiliation: | Defence Metallurgical Research Laboratory, Hyderabad 500058, Andhra Pradesh, India |
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Abstract: | The effect of 0.2 wt.% of boron on the mechanical properties of Ti-1100, a near α titanium alloy, was evaluated at room temperature and at 600 °C in the as cast and thermomechanically processed (α-β rolled) condition after subjecting it to different heat treatments. Boron addition in Ti-1100 significantly refined the microstructure in the as cast condition but the mechanical properties did not show any improvement. However, in the thermomechanically processed (α-β rolled) and standard heat treatment condition, the yield strength (YS) and ultimate tensile strength (UTS) of the boron containing alloy increased significantly without any drop in elongation-to-failure as compared to the base alloy at both room temperature and 600 °C. No discernible trend was seen in YS and UTS in boron containing alloy with change in solution treatment temperature either at room temperature or at 600 °C. |
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Keywords: | Ti-1100 alloy Boron Mechanical properties Thermomechanically processed |
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