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Abstract

Two Inconel 600-type alloys with the carbon contents of 25 and 303 ppm were studied with internal friction method after electrolytic hydrogen charging. Snoek-like peak was observed at temperatures of 130-250 K. Transient internal friction peak related to hydrogen desorption was detected in the temperature range of 300-470 K. It was shown, that in both studied alloys, the Snoek-like peak can be described with a single broadened Debye peak with the activation enthalpy of 0.39 e V. This value of the activation enthalpy coincides with the activation enthalpy of the main component of the Snoek-like peak, observed earlier in industrial Inconel 600 alloy. The absence of the effect of carbon observed in the present study is discussed in terms of preferential occupation of particular interstitial positions by carbon and hydrogen atoms.

Additional information

Authors: SMUK S, IRC-IAM, Ispra (IT);HANNINEN H, IRC-IAM, Ispra (IT);YAGODZINSKYY Y, IRC-IAM, Ispra (IT);TARASENK O, IRC-IAM, Ispra (IT);AALTONEN P, IRC-IAM, Ispra (IT)
Bibliographic Reference: Oral Report delivered at: 5th Workshop "Hydrogen Isotopes in Solids", Hosted at: Stockholm (SE), 17-19 May 2000
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