Numerical Evaluation of the Effect of Ni4Ti3 Precipitates on the Overall Thermo-Mechanical Response of NiTi Shape Memory Alloys Conference Paper

abstract

• The effect of precipitation on the thermo-mechanical properties of Ni-rich near-equiatomic NiTi Shape Memory Alloys (SMAs) is investigated via the finite element method. The thermo-mechanical response is simulated using a Representative Volume Element (RVE), which takes into account the structural effect of the precipitates, as well as the effect of the Ni-concentration gradient in the matrix. The Ni-distribution profile is evaluated using Ficks law for diffusion. The obtained results reproduce several of the experimentally observed precipitation-induced changes on the transformation behavior characteristics of these materials.

name of conference

• Volume 2: Mechanics and Behavior of Active Materials; Structural Health Monitoring; Bioinspired Smart Materials and Systems; Energy Harvesting

authors

• Lagoudas, Dimitris

published proceedings

• Volume 2: Mechanics and Behavior of Active Materials; Structural Health Monitoring; Bioinspired Smart Materials and Systems; Energy Harvesting

author list (cited authors)

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

citation count

• 1

complete list of authors

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

publication date

• September 2013

publisher

• ASME International  Publisher

keywords

• 40 Engineering
• 4016 Materials Engineering
• 51 Physical Sciences

Digital Object Identifier (DOI)

• 10.1115/smasis2013-3183

International Standard Book Number (ISBN) 13

• 9780791856048

start page

• v002t02a012

end page

• v002t02a012

volume

• 2

URL

• http://dx.doi.org/10.1115/smasis2013-3183