Transformation/Deformation Behavior and its Constitutive Equation for Ti-Ni-Cu Shape Memory Alloy

Yuji Takeda; Takaei Yamamoto; M. Uegaki; Hiroki Cho; Toshio Sakuma; Akihiko Suzuki

doi:10.4028/www.scientific.net/AST.59.129

Paper Titles

Pseudoelasticity of Cu-13.8Al-Ni Alloys Containing V and Nb
p.101

Dynamic and Static Displacements of Atoms in B2-Phase of TiNi Alloy
p.108

Shape Memory Behavior in Some (Ti,Zr,Hf)₅₀(Ni,Cu)₅₀ Alloys Elaborated by Glass Devitrification
p.113

Engineering Aspects of Shape Memory Film Actuators and Sensors
p.119

Transformation/Deformation Behavior and its Constitutive Equation for Ti-Ni-Cu Shape Memory Alloy
p.129

Effect of Micro-Voids on Plasticity in NiTi-Alloys
p.135

Experimental Characterization of NiTi SMAs Thermomechanical Behaviour Using Temperature and Strain Full-Field Measurements
p.140

Thermomechanical Characterization of Shape Memory Alloy Tubular Composite Structures
p.150

Functional Properties of Ti-Ni-Based Shape Memory Alloys
p.156

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Transformation/Deformation Behavior and its Constitutive Equation for Ti-Ni-Cu Shape Memory Alloy

Abstract:

This paper describes the transformation and deformation behavior and its constitutive equation for Ti-41.7Ni-8.5Cu (at%) shape memory alloy. Plastic deformation after pre-deformation is investigated using the volume fraction of slip-deformed martensite. New kinetics and constitutive equations are proposed for the reverse transformation process. The material constants in the proposed equationa are determined from the results of tensile and heating/cooling tests of Ti-41.7Ni-8.5Cu (at%) shape memory alloy. The calculated results describe well the deformation and transformation behavior affected by pre-strain.