Effect of the Type of State of Stress on the Stress Relaxation in Titanium Nickelide

Resumo

The stress relaxation in titanium nickelide specimens subjected to strain controlled uniaxial tension under martensitic anelasticity conditions at a given rate and the limited creep effect observed at the stages of stress controlled steplike loading are studied. The rheonomic properties of a shape memory alloy are found to depend on the type of state of stress, and they are more pronounced in tension than in compression. A simple model is develop to describe the detected effects.