Nitrogen partitioning between matrix, grain boundaries and precipitates in high-alloyed austenitic steels

Journal Article · Fri Feb 19 04:00:00 EST 1999 · Scripta Materialia

DOI:https://doi.org/10.1016/S1359-6462(98)00488-6· OSTI ID:335279

Petrov, Y N; Gavriljuk, V G ^[1]; Berns, H; Escher, C ^[2]

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1. Inst. for Metal Physics, Kiev (Ukraine)
2. Ruhr Univ., Bochum (Germany)

Nitrogen in austenitic steels is known to increase their resistance to sensitization treatments and to shift TTT diagrams to the right on the time scale, which suppresses the intercrystalline corrosion. It is also shown that nitrogen delays the precipitation of carbides and intermetallic phases, while, at the same time, chromium nitrides precipitate slower as compared to carbides. This paper aims at clarifying the question of possible nitrogen segregation at grain boundaries in austenitic steels. The nitrogen content in the chromium nitride Cr{sub 2}N and the intermetallic Laves phase was also measured as a test of the experimental technique used.

• OSTI ID: 335279
• Journal Information: Scripta Materialia, Journal Name: Scripta Materialia Journal Issue: 6 Vol. 40; ISSN 1359-6462; ISSN SCMAF7
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
AUSTENITIC STEELS
CHROMIUM NITRIDES
GRAIN BOUNDARIES
METALLURGICAL EFFECTS
NITROGEN ADDITIONS
PRECIPITATION
SEGREGATION