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

Dan Zhang; Lei Xu; Rui Wang; Li Feng Xu

doi:10.4028/www.scientific.net/AMR.332-334.912

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 332-334The Effect of Heat Treatment on the Shape Memory...

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

Abstract:

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

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Periodical:

Advanced Materials Research (Volumes 332-334)

Pages:

912-915

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.332-334.912

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Online since:

September 2011

Authors:

Dan Zhang, Lei Xu, Rui Wang, Li Feng Xu

Keywords:

Heat Treatment, Ni-Ti Alloy, Shape Memory Alloy Actuator, Shape Memory Effects (SME)

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