8-12 July 2013
Africa/Johannesburg timezone
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The elastic properties and the phonon dispersions of TiPtCo shape memory alloy using the supercell approach

Presented by Ms. Rosinah MAHLANGU on 9 Jul 2013 from 17:40 to 18:40
Type: Poster Presentation
Session: Poster1
Track: Track A - Division for Condensed Matter Physics and Materials

Abstract

Shape memory alloys (SMAs) are classified as a group of metallic materials that has the ability to retain or remember their original shape or size when subjected to the appropriate thermal deformation processes. In general, these materials can easily be elastically or plastically deformed at some relatively low temperature, and upon exposure to some higher temperature can return to their original shape. The effect of substituting Pt with Co as the third element in the TiPt shape memory alloy system has been investigated using the supercell approach. The elastic properties of the TiPtCo high temperature SMAs were investigated by using the <i>ab initio</i> approach employed in VASP. Furthermore the electronic structure mechanisms behind the elastic properties are discussed based on the phonon dispersions.

Award

no

Supervisor

PE Ngoepe, Ngoepe.phuti@ul.ac.za, University of Limpopo (Turfloop campus)

Paper

yes

Primary authors

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