Abstract
The vacuum-carburized TisoNiso alloy consists of a TiC layer in the outer surface, the thickness of which increases with increasing carburizing temperature and time. The carburized TiNi specimens, being hardened1 by the Tic phase, show improved wear characteristic. The martensitic transformation 1TABLE 1The Measured Shape Recovery, RSME, After Complete Reverse Martensitic Transformation for the Vacuum-Carburized Equiatomic TiNi Alloysspecimen's conditionbending angle at martensite phase (degree)measured angle after heated at 300 °C (degree)RSME (%)no carburized74790.5carburized at 980°C × 7 time551376.4 temperatures are depressed slightly to lower ones due to the constraint stress originating fkom the TiC layer, and the penetration of C atoms or other impurities into the TiNi matrix during the carburizing process. At the same time, the shape recovery of the carburized TiNi alloy is also slightly reduced because the TiC phase does not exhibit a shape memory effect and its constraint effect will also depress the shape recovery of the TiNi matrix.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
