Published September 2008 | Version v1
Journal article Metadata-only

Weld oxide formation on lean duplex stainless steel

Creators

  • 1. Outokumpu Stainless, Avesta Research Centre, P.O. Box 74, SE-774 22 Avesta (Sweden)
  • 2. Outokumpu Stainless Research Foundation, Brinellvaegen 23, SE-100 44 Stockholm (Sweden)

Description

Weld oxides have a strong influence on corrosion resistance, but have hitherto only been studied to a limited extent for duplex stainless steels. X-ray photoelectron spectroscopy (XPS) has here been used to study heat tint formed on gas tungsten arc (GTA) welds on the commercial duplex grades LDX 2101 (EN 1.4162/UNS S32101) and 2304 (EN 1.4362/UNS S32304) welded with and without nitrogen additions to the shielding gas. The process of heat tint formation is discussed in terms of transport phenomena to explain the effect of atmosphere, temperature and composition. The oxides formed were found to be enriched in manganese and corrosion testing shows that nitrogen has a strong influence on the weld oxide. A mechanism is proposed including evaporation from the weld pool and subsequent redeposition

Availability note (English)

Available from http://dx.doi.org/10.1016/j.corsci.2008.06.024

Additional details

Identifiers

DOI
10.1016/j.corsci.2008.06.024;
PII
S0010-938X(08)00228-X;

Publishing Information

Journal Title
Corrosion Science
Journal Volume
50
Journal Issue
9
Journal Page Range
p. 2620-2634
ISSN
0010-938X
CODEN
CRRSAA

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
40000952
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
CORROSION RESISTANCE; EVAPORATION; MANGANESE; NITROGEN ADDITIONS; OXIDATION; OXIDES; PITTING CORROSION; STAINLESS STEELS; WELDED JOINTS; X-RAY PHOTOELECTRON SPECTROSCOPY
Descriptors DEC
ALLOYS; CARBON ADDITIONS; CHALCOGENIDES; CHEMICAL REACTIONS; CORROSION; ELECTRON SPECTROSCOPY; ELEMENTS; HIGH ALLOY STEELS; IRON ALLOYS; IRON BASE ALLOYS; JOINTS; METALS; OXYGEN COMPOUNDS; PHASE TRANSFORMATIONS; PHOTOELECTRON SPECTROSCOPY; SPECTROSCOPY; STEELS; TRANSITION ELEMENT ALLOYS; TRANSITION ELEMENTS

Optional Information

Copyright
Copyright (c) 2008 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.