Abstract
Molybdenum samples nitrided at 2400 K for 10 min and quenched in liquid Wood's metal were studied using the internal friction (IF) method. Two relaxation peaks were observed at 392 K (peak A) and 498 K (peak B) on the IF curves obtained at a frequency ƒ of 1 Hz. The parameters of the Arrhenius law for both peaks were determined from their temperature shift ( ƒ = 1–10 Hz ) and from numerical decompositions of the experimental curves into elementary processes. It is proposed that peak A is one of the β dislocation peaks obtained in b.c.c. metals and that peak B is the nitrogen Snoek relaxation peak in molybdenum.
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