The Application of Ni – Ti Shape Memory Alloys as Fasteners

Abstract

This article covers the various materials aspects of the shape memory alloys that go into the design of fastening devices. A brief overview of the shape memory phenomenon and the martensite transformation during free and constrained recovery has been given to clarify the role of the martensitic transformation in the success of this application. Finally, the design of an Ni–Ti–Fe fastening sleeve has been discussed.

Keywords::

• Shape memory alloys
• Fasteners
• Ni–Ti alloys
• Constrained recovery