| Title |
Effect of ε Martensite on the Damping Capacity of Austenitic Stainless Steel |
| Authors |
손동욱(Dong Uk Son); 김재환(Jae Hwan Kim); 김익수(Ick Soo Kim); 성장현(Jang Hyun Sung); 강창룡(Chang Yong Kang); (Miyahara Kazuya) |
| ISSN |
1738-8228(ISSN), 2288-8241(eISSN) |
| Keywords |
Damping capacity; Deformation-induced martensite; ε martensite phase; Internal friction; Noise; Vibration; Austenitic stainless steel |
| Abstract |
The effect of the phases of y, α` and ε martensites, which constitute the structure of the 316L stainless steel with austenite structure at room temperature, on the damping capacity at room temperature has been investigated. As a result, various fractions of these phases were formed depending on the degree of cold work. The largest volume fraction of a martensite phase is obtained by 20% cold rolling and showed the highest damping capacity. The damping capacity is strongly controlled by the volume fraction of ε martensite with linear relationship, while the other phases of α` and r have actually no effect on the damping capacity. |