J. Phys. IV France 05 (1995) C8-391-C8-396
Effects of Carbon Content and Cold Working on Damping Capacity and Mechanical Property of Fe-17wt.%Mn Martensitic AlloyS.B. Baik1, J.C. Kim1, K.K. Jee2, M.C. Shin2 and C.S. Choi3
1 Woojin OSK Corp., Research Institute of Measuring Technology, C.P.O. Box 6666, Seoul, Korea
2 Korea Institute of Science and Technology, Division of Metals, Seoul 136-701, Korea
3 Yonsei University, Department of Metallurgical Engineering, Seoul 120-749, Korea
Effect of carbon content on damping capacity of Fe-17%Mn alloy is investigated by varying the carbon content from 0.02wt% to 0.28wt%. And cold rolling is conducted to examine its influence on damping capacity and mechanical properties in an Fe-17%Mn-0.02%C alloy. With the increase in carbon content, damping capacity decreases due to the area reduction of γ/ε boundaries and their mobility. Cold rolling up to 10% is found to improve strength as well as damping capacity in an Fe-17%Mn-0.02%C alloy without significant decrease in elongation. Fe-17%Mn-X%C alloy system containing carbon below about 0.1wt%, exhibiting superior mechanical properties and good damping capacities at high strain amplitudes, can preferably be applied as structural materials subjected to high amplitude vibration.
© EDP Sciences 1995