Structure and Shape Memory Effect in Annealed Ni-Ti-Co Strip Produced by Twin Roll Casting Technique

Tomasz Goryczka

doi:10.4028/www.scientific.net/SSP.154.59

Paper Titles

Magnetomechanical Properties of Terfenol-D Powder Composites
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A Simulation Study of Magnetostrictive Material Terfenol-D in Automotive CNG Fuel Injection Actuation
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SMA Thin Strip for Rotary-Driving Element
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Structure and Properties of the High Temperature Nitrided/Oxided Surface of Ni-Ti Alloy
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Structure and Shape Memory Effect in Annealed Ni-Ti-Co Strip Produced by Twin Roll Casting Technique
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Performance of Shape Memory Composite with SMA and SMP
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Shape Memory Assemblies Using Ultrasonic Welding
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Simultaneous Growth of MWCNTs at Different Temperatures in a Variable Gradient Furnace
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Suppressed Field Emission Screening Effect and Electric Field Simulation of Carbon Nanotube-Based Triode Field Emitters
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Structure and Shape Memory Effect in Annealed Ni-Ti-Co Strip Produced by Twin Roll Casting Technique

Abstract:

The ternary Ni47Ti50Co3 alloy was produced using twin rolls casting technique. The strip was annealed at 3000C, 4000C or 5000C for 1 hour. Annealing was carried out in real condition without protection atmosphere. The strips revealed a multi-stage martensitic transformation. However, the origin of this multi-stage transformation is different in the as-cast strip when compare to the thermally treated samples. Thermal treatment increases amount of preferentially oriented grains and in consequence higher degree of the shape recovery can be obtained.