COUPLER FOR FERROUS SHAPE MEMORY ALLOY MEDE PIPE

摘要

PROBLEM TO BE SOLVED: To stably provide a ferrous shape memory alloy made pipe coupling having more excellent shape memory characteristics, especially having a high inside diameter shrinkage percentage. SOLUTION: This coupler for a ferrous shape memory alloy made pipe is manufactured under a centrifugal casting method, and it is favorable that prismatic crystal occupies an area of not less than 50% and the length direction of prismatic crystal occupying the area of not less than 50% matches with the direction toward a center of a cylinder within±15 degrees.