Accès gratuit
J. Phys. IV France
Volume 07, Numéro C5, November 1997
IVth European Symposium on Martensitic Transformations
Page(s) C5-453 - C5-458
IVth European Symposium on Martensitic Transformations

J. Phys. IV France 07 (1997) C5-453-C5-458

DOI: 10.1051/jp4:1997572

Effects of Alloying Elements on Martensitic Transformation Behavior and Damping Capacity in Fe-17Mn Alloy

S.H. Baik1, J.C. Kim1, K.K. Jee2, W.Y. Jang3 and M.C. Shin2

1  Woojin Inc., Research Institute of Measuring Technology, C.P.O. Box 6666, Seoul, Korea
2  Korea Institute of Science of Technology, Division of Metals, Seoul 136-791, Korea
3  Chosun University, Department of Metallurgical Engineering, Kwangju 501-759, Korea

Effect of carbon and Ti on γ ←→ εmartensitic transformation behavior and damping capacity has been investigated in an Fe-17Mn alloy. The suppressive force of carbon against γ ←→ ε transformation increases linearly with an increase in carbon content, lowering Ms temperature and volume fraction of ε martensite. Carbon deteriorates damping capacity by reducing the area of γ/ε interfaces and by decreasing the mobility of the interfaces operated as damping source. The reduction in the mobility of the interfaces is accelerated when carbon-containing alloy is aged at high temperatures. The effect of Ti on the damping capacity is found to be beneficial in carbon-containing alloy, because the Ti contributes to depletion of carbon solute by the formation of TiC.

© EDP Sciences 1997