A grain boundary characterization study of boron segregation and carbide precipitation in alloy 304 austenitic stainless steel

Higher frequencies of low Σ boundaries, satisfying the Palumbo–Aust criterion, resulted in greater resistance to boron segregation and carbide formation at grain boundaries in alloy 304. Also, boron desegregated from grain boundaries and became incorporated into isolated grain boundary carbides, the...

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Bibliographic Details
Published in:Scripta materialia 2006-03, Vol.54 (6), p.1053-1058
Main Authors: Kurban, Michael, Erb, U., Aust, K.T.
Format: Article
Language:English
Subjects:
Alloy steels
Austenitic stainless steels
Boron
Boron carbide
Boundaries
Carbide precipitation
Carbides
Grain boundaries
Grain boundary segregation
Orientation imaging microscopy (OIM)
Secondary ion mass spectroscopy (SIMS)
Segregations
Stainless steels
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Summary:Higher frequencies of low Σ boundaries, satisfying the Palumbo–Aust criterion, resulted in greater resistance to boron segregation and carbide formation at grain boundaries in alloy 304. Also, boron desegregated from grain boundaries and became incorporated into isolated grain boundary carbides, thereby providing a discontinuous path for impurity segregation.
ISSN:1359-6462
0956-716X
1872-8456
DOI:10.1016/j.scriptamat.2005.11.055