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Home > Journals > SCIREA Journal of Physics > Archive > Paper Information

First-principles calculations of stacking fault energy in titanium alloys

Volume 1, Issue 1, October 2016    |    PP. 1-10    |PDF (319 K)|    Pub. Date: October 16, 2016
271 Downloads     1558 Views  

Author(s)
Angyang Yu, Ludong University, Yantai, Shandong province, 264025, China

Abstract
The research of plastic deformation of metals attaches great importance to stacking fault energy (SFE). In this paper, we derive the expressions of four types (I1, I2, E and T2) of basal plane SFEs of hcp-Ti within the framework of the Ising model. Based on this model, alloying effects on the stacking fault energy (SFE) of titanium alloys are investigated via first-principles calculations. It is found that SFE always decreases with addition of alloying elements. The distribution of lattice parameters of all the studied Ti95X5 has a direct relationship with alloying element’s atomic radii. Additionally, SFEs decrease linearly with the solutes concentration increasing in the Ti-based alloys. This work provides some useful data for new Ti alloys design.

Keywords
Stacking fault energy; Ising model; Alloying and concentration effects; First-principles calculations

Cite this paper
Angyang Yu, First-principles calculations of stacking fault energy in titanium alloys, SCIREA Journal of Physics. Vol. 1 , No. 1 , 2016 , pp. 1 - 10 .

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