B.M.Darinsky*, N.Ya.Rokhmanov, V.M.Andronov
Received February 15, 1999
The mechanical relaxation spectrum of low-alloyed Fe-C-AE
bcc solid solutions has been studied (AE are substitution alloying
elements, namely, Mo, Mn, Si) in the temperature range of carbon
relaxation. The measurements were made both for homogeneous (quenched)
interstitial-substitution solid solution and after decay of the supersaturated
interstitial solid solution during isothermal ageing. Partial modes
of Snoek relaxation have been separated. The number of those modes
is shown to be equal to that of the substitution solid solution components
in the state of low-alloyed interstitial-substitution solid solution.
In the alloy where the decay is of continuous type (Fe-Si-C, Si = 0.9%
by mass), the displacement of the complex carbon maximum towards higher
temperatures has been revealed due to increased thermal stability
of its high-temperature mode associated with the C atoms diffusion
under stress near two-atomic Si clusters.