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Effect of Heat Treatment on Grain Growth of Beta Titanium Alloy
Abstract:
One of the disadvantages of β-Ti alloys is rapidgrain coarsening at elevated temperatures due to accelerated diffusion in the βphase region. Microstructural stability of β-Ti alloys would depend on theirability to maintain refined grains or microstructures at high temperatures. Thebeta grain growth kinetics of a newly designed beta titanium alloy has beensystematically investigated in this research. The grain growth exponent (n) value is at the range of 0.1-0.2,about 0.1 at low temperatures and about 0.2 at high temperatures over 950°C. Itis lower than other beta titanium alloys. The reason of lower n values can be investigated in the viewof the solute and the diffusivity in the titanium matrix.
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423-426
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September 2014
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© 2014 Trans Tech Publications Ltd. All Rights Reserved
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