Shape Memory Materials Database Tool—A Compendium of Functional Data for Shape Memory Materials

A Thermodynamical Constitutive Model for Shape Memory Materials. Part I. the Monolithic Shape Memory Alloy

Pseudoelasticity and the shape memory e ect (SME) due to martensitic transformation and reorientation of polycrystalline shape memory alloy (SMA) materials are modelled using a free energy function and a dissipation potential. Three di erent cases are considered, based on the number of internal state variables in the free energy: (1) Austenite plus a variable number of martensite variants; (2) ...

Modeling Permanent Deformations of Superelastic and Shape Memory Materials

In this paper we propose a modification of the polycrystalline shape memory alloy constitutive model originally proposed by Souza. By introducing a transformation strain energy with two different hardening coefficients, we are able to take into account the effect of the martensitic transformation of unfavorably oriented grains occurring after the main plateau. By choosing a proper second harden...

Controlling the martensitic transition in Heusler shape-memory materials

A Viewpoint on: Role of Electronic Structure in the Martensitic Phase Transition of Ni2Mn1+xSn1−x Studied by Hard-X-Ray Photoelectron Spectroscopy and Ab Initio Calculation M. Ye, A. Kimura, Y. Miura, M. Shirai, Y. T. Cui, K. Shimada, H. Namatame, M. Taniguchi, S. Ueda, K. Kobayashi, R. Kainuma, T. Shishido, K. Fukushima and T. Kanomata Phys. Rev. Lett. 104, 176401 (2010) – Published April 26, ...

NiTi Shape Memory Alloys, Promising Materials in Orthopedic Applications

A 3d Micro-Plane Model for Shape Memory Alloys

are compared with the experimental results. In these test results the shape memory alloys behavior as: super elasticity under various temperatures, loading rate effects, asymmetry in tension and pressure, various loops of loading and unloading, hydrostatic pressure effects, different proportional tension-shear biaxial loading and unloading, and also deviation from normality due to non-proportio...