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X‐ray, light and scanning electron microscopy of manganese sulphide and lead inclusions in free‐cutting steel
Author(s) -
Dench W. A.,
Pugh D. J.,
Stoddart C. T. H.
Publication year - 1977
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.1365-2818.1977.tb01141.x
Subject(s) - scanning electron microscope , manganese , materials science , x ray , electron microscope , optical microscope , inclusion (mineral) , metallurgy , crystallography , composite material , mineralogy , optics , chemistry , physics
SUMMARY MnS and Pb inclusions in some commercial free‐cutting steel bars are of high length‐to‐thickness ratio and are also sinuous in form. Individual inclusions are then not seen in their entirety in metallographically polished longitudinal sections examined in the light or scanning electron microscope. X‐ray microradiography of thinned specimens forms images of inclusions that lie completely within the thickness of the specimen. By using both Co and Fe radiation, MnS, Pb and the steel matrix may all be clearly distinguished.