Theoretical Calculation of the Polytypism Transition Temperature of Titanium Alloys on the Valence Electron Level

Abstract:

Based on the polytypism transition temperature(PPT) of pure titanium, the the empirical electron theory of solids and molecules(EET) and the basic theory of the phase transformation of titanium alloys, a new method to calculate the PTT of titanium alloys is put forward after calculating the valence electron structure(VES) parameter nA which is the covalence electron pairs on the strongest bond of alloy phases, the crystal cell weight of  and  phases in the structure, the compensation coefficient of the phase and the temperature coefficient of  stable element. After calculating the PTT of some common titanium alloys, we find that the theoretical values are consistent with the experimental ones, so it is feasible to calculate the polytypism transition temperature of the titanium alloys on the covalence electron level.

• Periodical: Applied Mechanics and Materials (Volumes 152-154)
• Pages: 342-347
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.152-154.342
• Online since: January 2012
• Authors: Hua Qu, Wei Dong Liu
• Keywords: Polytypism Transition Temperature, Titanium Alloy, Valence Electron Structure

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