Conclusions
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1.
The diffusion coefficient in α-titanium at the transformation temperature is by about two orders greater, while the activation energy is half of that in β-titanium. A qualitatively similar rule holds for technically pure titanium although the diffusional mobility in it is less and the activation energy greater than in iodide titanium.
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2.
The difference between diffusion parameters in α and β-titanium can be related either to the different strength of the interatomic bonds or to structural peculiarities of α-titanium.
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3.
Structural changes in titanium during diffusion annealing result in an accelerated self-diffusion.
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Bokshtein, S.Z., Kishkin, S.T. & Osvenskii, V.B. The effect of polymorphic transformation on diffusion in titanium. Met Sci Heat Treat 2, 329–332 (1960). https://doi.org/10.1007/BF00715783
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DOI: https://doi.org/10.1007/BF00715783