2002•Journal of Nanjing UniversityRequires access

Study on superelastic deformation behavior of TiNi shape memory alloy under cyclic loading

Gong Jian

Abstract

Superelasticity is one of the important mechanical properties of shape memory alloy (SMA). In the present paper, the superelastic deformation behavior of TiNi SMA under various loading conditions with different experimental temperatures and strain rates was investigated. The characteristics of transformation stress during cyclic deformation were analyzed. The relationship between the residual stress and strain which are acculumated during cyclic loading was obtained. After mechanical training with cyclic deformation, two-way deformation was investigated by heating and cooling under no load.

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Key concepts: Pseudoelasticity, Shape-memory alloy, Materials science, SMA*, Deformation (meteorology), Composite material, Alloy, Nickel titanium