| Title |
Microstructural Changes by Feformation and Shape memory Effect in Fe - 15Mn - 5Cr - 5Co - 3Si Alloy |
| Authors |
장우양(W . Y . Jang); 지광구(K . K . Jee); 신명철(M . C . Shin); 홍종휘(J . H . Hong) |
| Abstract |
The relationship between mircrostructural changes during deformation and shpae memory effect(SME) has been studied in Fe-15Mn-5Cr-5Co-3Si alloy. Dislocations generated as well as ε-α` transformation during deformation were revealed to deteriorate the SME. Teh γ→ε transformation contributing to SME was hindered by the multiplication of the dislocations during the deformation. The transformation of stress-induced ε into α` was found to be another cause for making SME worse due to the reduction in the amount of the ε. It is proposed that SME could be improved not only by the increase in strength but by the prevention of ε→α` transformation during the deformation. |