Effect of nitrogen on internal friction of hydrogen charged stable austenitic stainless steels

Journal Article · Thu Jul 15 04:00:00 EDT 1993 · Scripta Metallurgica et Materialia; (United States)

DOI:https://doi.org/10.1016/0956-716X(93)90304-B· OSTI ID:6348397

Gavriljuk, V G; Tarasenko, A V ^[1]; Haenninen, H; Ullakko, K ^[2]

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1. Academy of Sciences, Kiev (Ukraine)
2. Helsinki Univ. of Technology, Espoo (Finland)

Hydrogen charging of iron-based austenites causes relaxation phenomena at temperatures below RT. Internal friction peaks were observed in stainless steels, Fe-Ni and Fe-Ni-Mn alloys. A single peak located at about 300 K for frequencies of about 500 Hz occurs in austenitic stainless steels according to a cited reference. Cold work after hydrogen charging causes two additional peaks at 230 and 330 K in the same range of frequencies. The latter peak was also found at 270-280 K for frequency of about 1 Hz. In studies of Fe-Ni invar alloys a single peak was observed at temperatures 230-250 K at the frequency range of 200-1,600 Hz. There is a strong controversy concerning the nature of above mentioned peaks. The aim of the experiments described below was to obtain data assisting understanding of mechanisms of the hydrogen caused relaxation in austenitic stainless steels. The effect of composition was studied in order to examine the possible contributions of interaction between solute atoms and hydrogen into relaxation.

• OSTI ID: 6348397
• Journal Information: Scripta Metallurgica et Materialia; (United States), Journal Name: Scripta Metallurgica et Materialia; (United States) Vol. 29:2; ISSN 0956-716X; ISSN SCRMEX
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ALLOYS
CHROMIUM ALLOYS
CHROMIUM-NICKEL STEELS
ELEMENTS
FRICTION
HIGH ALLOY STEELS
HYDROGEN
INTERNAL FRICTION
IRON ALLOYS
IRON BASE ALLOYS
METALLURGICAL EFFECTS
NICKEL ALLOYS
NITROGEN
NONMETALS
RELAXATION
STAINLESS STEELS
STEELS