A systematic investigation of the compressive behaviour of near equi-atomic NiTi over a range of strain rates and temperatures

A. Patman; G.M. Swallowe

doi:doi:10.1051/dymat/2009190

All issues

Volume 2 (2009)

10.1051/dymat/2009190

Abstract

Issue		DYMAT 2009 Volume 2, 2009 DYMAT 2009 - 9th International Conference on the Mechanical and Physical Behaviour of Materials under Dynamic Loading


Page(s)		1345 - 1351
Section		Constitutive Modeling
DOI		https://doi.org/10.1051/dymat/2009190
Published online		15 September 2009

DYMAT 2009 (2009) 1345-1351
DOI: 10.1051/dymat/2009190

A systematic investigation of the compressive behaviour of near equi-atomic NiTi over a range of strain rates and temperatures

A. Patman and G.M. Swallowe

Department of Physics, Loughborough University, LE11 3TU Loughborough, UK

Published online: 15 September 2009

Abstract
An investigation of the compressive stress-strain behaviour of a 50.4% Ni by weight NiTi shape memory alloy when subjected to both quasi-static and high strain rate deformation across a range of temperatures is reported. Testing was carried out using a Hounsfield universal testing machine and a split Hopkinson pressure bar system. Transformation stress dependence on both increasing strain rate and temperature is presented, together with observed values of strain rate sensitivity and derived entropy of transformation per unit volume.