Premium
Oxide formation and alloying elements enrichment on TRIP steel surface during inter‐critical annealing
Author(s) -
GONG Y. F.,
BIROSCA S.,
KIM H. S.,
DE COOMAN B. C.
Publication year - 2008
Publication title -
journal of microscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.569
H-Index - 111
eISSN - 1365-2818
pISSN - 0022-2720
DOI - 10.1111/j.1365-2818.2008.02002.x
Subject(s) - materials science , annealing (glass) , microstructure , electron backscatter diffraction , metallurgy , oxide , galvanization , dew point , trip steel , composite material , martensite , layer (electronics) , physics , meteorology
Summary The gas atmosphere in continuous annealing and galvanizing lines alters both composition and microstructure of the surface and sub‐surface of sheet steels. The alloying element enrichments and the oxide morphology on transformation‐induced plasticity steel surfaces are strongly influenced by the dew point of the furnace atmosphere and annealing temperature. The formation of a thin oxide film and enrichment of the alloying elements during annealing may result in surface defects on galvanized sheet products. The present contribution reports on the use of microanalysis techniques such as electron backscatter diffraction, glow discharge optical emission spectroscopy and electron probe micro‐analysis for the detailed surface analysis of inter‐critically annealed transformation‐induced plasticity steel such as oxide phase determination, microstructure and microtexture evolutions.