Abstract
In order to overcome difficulties that have hindered precision casting of shape memory alloys, we made ingots created with self-propagating high temperature synthetic method (SHS) which eventually led us to the success of precision casting utilizing lost wax process. Also we succeeded in creating functional product that was treated with the ultrasonic shot peening process, improving the recovery elasticity against deformation. Although the common casting products are created using many different kinds of metals and alloys, casting products utilizing shape memory alloy have not been widely adopted due to the lack of successfully manufactured products. The reason for this is that there was much difficulty in developing equal property structures that is free of gravity segregation of Ti-Ni. Also its essential characteristics (being the shape memory and super elasticity), the makeup of component had to overcome the structural weaknesses in order to withstand from possible deformation.
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