Damping and mechanical properties of nitrogen-containing Fe-Mn alloys

V.V. Blyznyuk; N.I. Glavatska; O. Sôderberg; V.G. Gavriljuk; V.K. Lindroos

doi:doi:10.1051/jp4:2003901

Numéro		J. Phys. IV France Volume 112, October 2003


Page(s)		359 - 363
DOI		https://doi.org/10.1051/jp4:2003901

J. Phys. IV France 112 (2003) 359
DOI: 10.1051/jp4:2003901

Damping and mechanical properties of nitrogen-containing Fe-Mn alloys

V.V. Blyznyuk¹, N.I. Glavatska¹, O. Sôderberg¹, V.G. Gavriljuk¹ and V.K. Lindroos¹

¹ Institute for Metal Physics, Department of Steels and Alloys, Vernadsky Blvd. 36, 03680 Kiev 142, Ukraine

Abstract
An effect of nitrogen on damping in Fe-Mn alloys is studied. It is shown that nitrogen provides unchanged value of damping capacity in the alloy Fe-17Mn (wt. %) in spite of a decrease in the fraction of the thermally-induced h.c.p. $\epsilon$ -martensite. This effect is attributed to an enhanced mobility of Shockley partials at the interface between the $\epsilon$ -martensite bands and residual austenite. At the same time nitrogen increases the yield and ultimate strengths at nearly the same value of plasticity of the Fe-14Mn alloy and increases plasticity of the Fe-17Mn alloy by more than three times.