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Abstract

Many hydrogenated pure metals and industrial alloys with FCC lattice show a distinct internal friction peak above room temperature caused by the thermal desorption of hydrogen. Based on these observations, a new method for studying the hydrogen diffusivity and the interaction of hydrogen with lattice defects is proposed for the temperature range of 250-500 K. The desorption origin of the peak was studied in detail in hydrogen-charged Inconel 600 alloys with different carbon contents. The peak was shown to possess transient and non-relaxation nature. In some cases, a fine structure of the peak caused by hydrogen traps can be observed. A theoretical model of the thermal desorption effects on the losses of mechanical energy, i.e., internal friction, in metals is developed.

Additional information

Authors: YAGODZINSKYY Y, Institute of Metals, National Academy of Science, Ukraine (UA);TARAENKO O, Institute of Metals, National Academy of Science, Ukraine (UA);SMUK S, VTT Manufacturing Technology, Finland Helsinki University of Technology, JRC-IAM (FI);AALTONEN P, VTT Manufacturing Technology, Finland Helsinki University of Technology, JRC-IAM (FI);HANNINEN H, VTT Manufacturing Technology, Finland Helsinki University of Technology, JRC-IAM (FI)
Bibliographic Reference: Oral Report delivered at the 5th International Workshop of Hydrogen Isotopes in Solids, hosted at Stockholm, (SE), 17-19 May 2000
Record Number: 200012995 / Last updated on: 2001-01-24
Category: PUBLICATION
Original language: en
Available languages: en
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