The Effect of Heat Treatment on the Shape Memory Effect of Ni-Ti Alloy Ultra-Thin Wires

• DOI: 10.4028/www.scientific.net/amr.332-334.912
• Publication Date: 2011-09-08T06:52:07Z
• Authors: Dan Zhang; Lei Xu; Rui Wang; Li Feng Xu
• Keywords: 0203 mechanical engineering; 02 engineering and technology

Various heat treatment conditions with temperature scans of 300-700 °C, and annealing time 1-4 hours were adopted in the Ti-49.5at.%-Ni shape memory alloy ultra thin wires. The mechanical hysteretic curves crystal morphology obtained by tensile-recovery testing scan electric microscopes (SEM). result shows that effect Ni-Ti first decline after rising increases. Alloy 500°C, presents best. Time is not a significant factor for treatment.