JSME international journal Ser A Mechanics and material engineering · 1993 · 15 citations · 12 references
EngineeringSevere Plastic DeformationMechanical EngineeringPartial PseudoelasticityStress-strain-temperature Relationship AssociatedMaterials ScienceMaterials EngineeringMagnetic Shape Memory AlloysStress-strain-temperature RelationshipSolid MechanicsPlasticityThermomechanical ProcessingMicrostructureApplied PhysicsAlloy DesignReverse Transformation StripR-phase TransformationAlloy PhaseAlloy CastingMechanics Of Materials
The stress-strain-temperature relationship associated with the R-phase transformation in TiNi shape memory alloy is investigated experimentally and theoretically. The main results are summarized as follows. (1) The R-phase transformation showing a clear yielding stage in the stress-strain-temperature relationship appears at a certain shape memory processing temperature. (2) The R-phase transformation strip and the reverse transformation strip on the stress-temperature plane, which specify the characteristics due to the R-phase transformation are almost overlapping. Both transformation strips are narrow at high shape memory processing temperature. (3) The constitutive equation considering the volume fraction of the R-phase well describes the deformation behavior, such as the shape memory effect, pseudoelasticity and partial pseudoelasticity.
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