J. Phys. IV France 112 (2003) 359
Damping and mechanical properties of nitrogen-containing Fe-Mn alloysV.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
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. -martensite. This effect is attributed to an enhanced mobility of Shockley partials at the interface between the -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.
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