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Study on Superelasticity and Microstructure of TiNiV Shape Memory Alloy by Medium-Temperature Treatment

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Abstract:

The TiNiV shape memory alloy wire that was cold pressed under 9Mpa at the room temperature had good superelasticity. On this basis, a tensile test was made after a series of medium-temperature treatment. Then the effect of superelasticity and microstructure of TiNiV shape memory alloy by medium-temperature treatment were studied. The results indicate that the experimental wires assume thorough non-linear superelasticity after holding 30 min at 430°C. The superelasticity of the wire enhances firstly, then declines with the ascent of the temperature and extension of the time of the holding. A kind of potentiation phase-Ti3Ni4 precipites out of the wire under different medium-temperature treatment.

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Materials Processing Technology, ICAMMP2011 View Preview

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Periodical:

Advanced Materials Research (Volumes 418-420)

Pages:

222-227

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.418-420.222

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Online since:

December 2011

Authors:

Zhi Jian Zhang, Nai Chao Si, Guang Lei Liu, Song Hai Si

Keywords:

Medium-Temperature, Microstructure, Shape Memory Alloy Actuator, Superelasticity, TiNiV, Treatment

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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