Constitutive Modeling of Near-Equiatomic NiTi Shape Memory Alloys Considering Composition and Heat Treatment Conference Paper

abstract

• A predictive microscale-informed model that takes into account the precipitateshape memory performance relations and allows for the evaluation of the effective thermomechanical response of precipitated Ni-rich NiTi shape memory alloys on the basis of composition and heat treatment is presented. The model considers the structural effect of the precipitates (coherency stresses due to the lattice mismatch between the precipitates and the matrix material and precipitate volume fraction), as well as the effect of the Ni-concentration gradient in the matrix, resulting from Ni-depletion during precipitate growth. The predictive capability of the model is tested against experimental data obtained fromNi50.7Ti (at. %) that has been heat treated under different conditions and good agreement is shown.

authors

• Lagoudas, Dimitris

published proceedings

• Materials Science Forum

author list (cited authors)

• Cox, A., Baxevanis, T., & Lagoudas, D. C.

citation count

• 0

complete list of authors

• Cox, Austin||Baxevanis, Theocharis||Lagoudas, Dimitris C

publication date

• June 2016

publisher

• Trans Tech Publications  Publisher

published in

• Materials Science Forum  Journal

keywords

• 40 Engineering
• 4016 Materials Engineering

Digital Object Identifier (DOI)

• 10.4028/www.scientific.net/msf.856.78

International Standard Book Number (ISBN) 13

• 9783035710267

start page

• 78

end page

• 84

volume

• 856

URL

• http%3A%2F%2Fdx.doi.org%2F10.4028%2Fwww.scientific.net%2Fmsf.856.78