Depletion effects at phase boundaries in 2205 duplex stainless steel characterized with SKPFM and TEM/EDS
2009 (English)In: Corrosion Science, ISSN 0010-938X, E-ISSN 1879-0496, Vol. 51, no 8, 1850-1860 p.Article in journal (Refereed) Published
2205 duplex stainless steel, which had undergone two different heat treatments, was characterized by means of SEM/EDS, TEM/EDS, magnetic force microscopy (MFM) and scanning Kelvin probe force microscopy (SKPFM). In general, paramagnetic austenite was found to exhibit the highest Volta potential, followed by non-magnetic sigma phase and ferromagnetic ferrite. The local Volta potential drop at the phase boundaries is clearly visible in the slowly cooled sample with sigma phase precipitate while it is not notable in the solution-annealed reference sample. Chemical composition line analyses with TEM/EDS showed the depletion of Cr and Mo at the phase boundaries.
Place, publisher, year, edition, pages
2009. Vol. 51, no 8, 1850-1860 p.
PROBE FORCE MICROSCOPY; SCANNING KELVIN PROBE; SIGMA-PHASE; CORROSION BEHAVIOR; PITTING CORROSION; IN-SITU; ATOMIC-FORCE; PASSIVE FILMS; COLD-WORKING; DISSOLUTION
IdentifiersURN: urn:nbn:se:kth:diva-12895DOI: 10.1016/j.corsci.2009.05.012ISI: 000268656300043ScopusID: 2-s2.0-67649831333OAI: oai:DiVA.org:kth-12895DiVA: diva2:319566