Speaker
Mr
Mordecai Mashamaite
(Materials Modeling Centre)
Description
A molecular dynamic study of Ti50-x Zrx Pt50 as potential high temperature shape memory alloy has been performed using the LAMMPS code. The lattice dynamics, elastic properties and temperature dependence were deduced to determine the effect of ternary addition with Zr on the Ti sub-lattice at varied temperature range. It was found that the lattice parameter increases with Zr addition, the thermodynamic stability was observed at 5 at. % Zr. Furthermore, the elastic properties showed positive shear modulus for concentrations range 5 - 25 at. % Zr, indicating stability of the structures and instability above 25 at. % Zr concentrations. More importantly, we observed a martensitic transformation behaviour for Ti50-x Zrx Pt50 (x= 3.125, 9.375) at around 900K.
Main supervisor (name and email)<br>and his / her institution
Prof. Hasani Chauke
hr.chauke@ul.ac.za
Apply to be<br> considered for a student <br> award (Yes / No)?
Yes
Level for award<br> (Hons, MSc, <br> PhD, N/A)?
PhD
Would you like to <br> submit a short paper <br> for the Conference <br> Proceedings (Yes / No)?
Yes
Primary author
Mr
Mordecai Mashamaite
(Materials Modeling Centre)
Co-authors
Prof.
Hasani Chauke
(University of Limpopo)
Prof.
Phuti Ngoepe
(University of Limpopo)