Micro folding structure using Ti-Ni-Zr high formable shape memory alloys

In this study, we proposed the fabrication process of the micro folding structures such as foldable pipe structures using Ti-Ni-Zr high formable shape memory alloys (HFSMAs). We investigated microforming ability, shape memory behaviors of Ti 38 Ni 50 Zr 12 (at.%) HFSMAs. We succeeded to fabricate fo...

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Bibliographic Details
Main Authors: Watanabe, H., Mizoshiri, M., Hata, S., Sakurai, J.
Format: Conference Proceeding
Language:English
Subjects:
Annealing
Fabrication
Fixtures
Martensite
Shape
Shape memory alloys
Strain
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Summary:In this study, we proposed the fabrication process of the micro folding structures such as foldable pipe structures using Ti-Ni-Zr high formable shape memory alloys (HFSMAs). We investigated microforming ability, shape memory behaviors of Ti 38 Ni 50 Zr 12 (at.%) HFSMAs. We succeeded to fabricate folded samples without crystallization. Their folding angles 0were approximately 60° and 90°. Finally, folded samples were annealed at 873 K for 1 hour, and then they became SMAs. To investigate their shape memory behaviors, bending tests during several thermal cycles were conducted. As these results, both folded samples showed good shape memory behaviors, and could recover their initial shapes without plastic deformation, even if they were deformed to straight shape (0=180°).
ISSN:2474-3771
DOI:10.1109/MHS.2017.8305191