Abstract
Shape memory alloys are materials that can memorize shapes based on the crystalline structures occurring at different temperatures and pressures. The unique quality of a material to remember shape based on two temperatures is explored. This shape memory effect is sometimes described as a “smart” material, where the material can remember the shape given at elevated temperature in the austenite region and can return to those shapes at the lower martensitic temperatures. This unique ability of the material to memorize the shape has a valued application in the actuators, biomechanics, aerospace, sports equipment. This research explores the increased ability of the smart material to memorize multiple structures at different temperatures by using various Ti and Ni alloys in direct contact with each other. Fabrication of the experimental specimens was completed using field assisted sintering (FAST) of feedstock powders. Experiments showed that varying the Ni alloy ratio at strategic locations can have an impact on the ability of the shape memory alloy to remember multiple memory effect at the two intended temperatures.