The Proceedings of the Materials and Mechanics Conference
Online ISSN : 2424-2845
2016
Session ID : OS06-05
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Improvement of the shape memory capacity of NiTi alloys by thermomechanical treatment including severe plastic working
Shun FUKUSHIMAHiroyuki KATOKazuaki SASAKI
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CONFERENCE PROCEEDINGS FREE ACCESS

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Abstract

NiTi shape memory alloys exhibit both shape memory effect and superelasticity. In general, the shape memory capacity of commercial products supplied as drawing wires is known to be limited below 7% strain. In order to get a larger shape memory strain than that, additional cold working through drawing with dices and a medium temperature annealing were applied. It might cause the work hardening and the re-orientation of grains into the favorable <111> direction along the tensile axis. As a result, we obtained the shape memory and superelastic strains of about 9%.

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© 2016 The Japan Society of Mechanical Engineers
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