Theoretical Investigations of Ti-Based Binary Shape Memory Alloys

Rita John, Hannah Ruben

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DOI: 10.4236/msa.2011.210184                

Abstract

The electronic structure and ground state properties of TiX (X = Fe, Ni, Pd, Pt and Cu) type Shape Memory alloys have been calculated using the self consistent Tight- Binding Linear Muffin Tin Orbital (TB-LMTO) method. The systematic total energy studies made on TiX alloys in both B2 and (B19/B19’) structures successfully explain the structural stability of these compounds. The equilibrium lattice parameters, bulk moduli (B_o), cohesive energy (E_coh) and heat of formation (ΔH) are calculated for these systems and compared with the available experimental and other theoretical results. The bonding nature of these TiX alloys is analyzed via the density of states (DOS) histogram.

Keywords

Shape Memory Alloys, TB-LMTO, B2-B19 Phases, Structural Parameters

Conflicts of Interest

The authors declare no conflicts of interest.

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