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Extended X‐Ray Absorption Fine Structure Investigation of Annealed Carbon Expanded Austenite
Author(s) -
Oddershede Jette,
Christiansen Thomas L.,
Ståhl Kenny,
Somers Marcel A. J.
Publication year - 2012
Publication title -
steel research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.603
H-Index - 49
eISSN - 1869-344X
pISSN - 1611-3683
DOI - 10.1002/srin.201100197
Subject(s) - austenite , materials science , extended x ray absorption fine structure , carbide , carburizing , synchrotron , carbon fibers , absorption (acoustics) , metallurgy , diffraction , analytical chemistry (journal) , crystallography , absorption spectroscopy , microstructure , composite material , chemistry , composite number , optics , physics , chromatography
Carbon expanded austenite synthesized through carburizing of austenitic stainless steel powder at 380°C was annealed at 470°C and investigated with extended X‐ray absorption fine structure (EXAFS) and synchrotron powder diffraction (SPD). SPD showed that the samples consisted of carbon expanded austenite and Hägg carbide, χ‐M 5 C 2 . EXAFS showed that the Cr atoms were mainly present in environments similar to the carbides Hägg χ‐M 5 C 2 and M 23 C 6 . The environments of the Fe and Ni atoms were concluded to be largely metallic austenite.