MICROSTRUCTURE OF HEAT-RESISTANT CHROMIUM STEEL WELD METALS

Authors
ANDREN HO CAI GJ SVENSSON LE
Citation
Ho. Andren et al., MICROSTRUCTURE OF HEAT-RESISTANT CHROMIUM STEEL WELD METALS, Applied surface science, 87-8(1-4), 1995, pp. 200-206
Citations number
13
Categorie Soggetti
Physics, Condensed Matter","Chemistry Physical","Materials Science, Coatings & Films
Journal title
Applied surface science → ACNP
ISSN journal
01694332
Volume
87-8
Issue
1-4
Year of publication
1995
Pages
200 - 206
Database
ISI
SICI code
0169-4332(1995)87-8:1-4<200:MOHCSW>2.0.ZU;2-A
Abstract
The microstructure of weld metals of 2.25Cr-1Mo, 5Cr-0.5Mo, 9Cr-1Mo an d 12Cr-1Mo type steels was studied with electron microscopy and atom p robe field ion microscopy. Many different types of carbides and nitrid es precipitated during welding and post-weld heat treatment (MC, M(2)C , M(3)C, M(7)C(3), M(23)C(6), MN, M(2)N). The eutectoid decomposition of retained austenite gave large aggregates of carbides which were fou nd to be detrimental to the impact toughness of the weld metal.