Paper Title
Atomic Mobility In Ternary AL-Ti-SN BCC Phase

Abstract
Titanium and its alloys are materials with superior properties such as strength or corrosion resistance; therefore, they found a wide spectrum of applications from biomaterials to aerospace industry. The titanium has two allotropic forms, so called Ti- with HCP_A3 structure, and Ti- that crystalizes in BCC_A2 structure. The titanium alloys contain different elements, like Al, Cr, Sn, V, and so on. Each of these elements improves a specific property of the alloy.The titanium alloys with Al and Sn found particular application in aerospace industry where they are used for production of compressor discs or blades of gas turbines for jet engines. It is obvious that diffusion has a great influence on different properties of a material: strength, ductility, fracture toughness and so on. On other and, knowledge about kinetic properties is necessary for a heat treatment or prediction of phase transformation rapidity. In this work, a kinetic model of ternary Ti-Al-Sn BCC phase is proposed. The model was used for simulation of available experimental results. A good agreement between calculations and experiments was found. Keywords - Calphad, Kinetics, Simulation, TI Alloys, Ab Initio.