Anelastic Phenomena and Cr2N Precipitation in a High Nitrogen Austenitic Steel
Internal friction (IF) and dynamic modulus measurements on a high nitrogen (0.8 wt%) austenitic steel in the temperature range from room temperature to 800 °C have been carried out by using a vibrating reed technique with electrostatic excitation and frequency modulation detection of flexural vibrations in the frequency range of kHz. The IF spectrum of the as-prepared material shows a broad peak superimposed to an exponentially increasing background. The discontinuous precipitation of Cr2N phase changes the characteristics of the peak. The results have been discussed by considering interstitial-substitutional (i-s) interactions.
T. Chandra, N. Wanderka, W. Reimers , M. Ionescu
P. Deodati et al., "Anelastic Phenomena and Cr2N Precipitation in a High Nitrogen Austenitic Steel", Advanced Materials Research, Vols. 89-91, pp. 485-490, 2010