| Title |
A Study on the Shape Memory Effect of Co-X%Ni Alloys |
| Authors |
신한철(Han Chul Shin),이상현(Sang Hyun Lee),전중환(Joong Hwan Jun),최종술(Chong Sool Choi) |
| ISSN |
1738-8228(ISSN), 2288-8241(eISSN) |
| Abstract |
Shape memory effect(SME) and martensitic transformation kinetics of Co-X%Ni alloys were studied. SME decreased with increasing nickel content, and the SME was proportional to the initial ε martensite content, suggesting that the SME of the Co-X%Ni alloys is associated with coalescence of the pre-existing ε plates. Thermal cycling(ε↔α) increases the ε martensite content, and the SME becomes larger with increasing number of thermal cycles. The martensitic transformation kinetics of the Co-X%Ni alloys can be expressed as Y=1-exp[-0.00526(M_s-25)], where Y is volume fraction of ε martensite, and M_s is the martensite start temperature. |