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

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

  • ASME 2013 Conference on Smart Materials, Adaptive Structures and Intelligent Systems

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.

publication date

  • January 1, 2013 11:11 AM