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The object of this work is to improve the techniques involving electrolytic separation, dealing with a large sample of steel, and to develop a methodology of chemical and physical separation of the different phases. Separation and quantification of inclusions and precipitated phases in steels are realized by electrolytic methods followed by chemical selective treatment or granulometric separation. Several chemical techniques have been developed in order to discover the effects of the nature and the proportion of inclusions, or precipitated phases, on mechanical properties and service conditions : separation of oxides and sulphides, determination of boron phases [B(O), B(N), B(C)] and quantification of nitrides and carbides. The extracted residue is chemically treated in order to establish the amount of remaining nitrogen in solution. This allows the different nitrides and carbides to be quantified.

A granulometric technique was developed to give information on the morphology and size of the inclusion. Many modifications and simplifications have been found in order to decrease the pollution from reagents, materials and procedures. .

Additional information

Authors: HOCQVAUX H, Laborlux, Esch-sur-Alzette (LU);PETIN J, Laborlux, Esch-sur-Alzette (LU);MANZONI R, Laborlux, Esch-sur-Alzette (LU);SABOT R, Institut de Recherches de la Sidérurgie Française, Maizière-lès-Metz (FR)
Bibliographic Reference: EUR 15588 FR (1996) 94pp., FS, ECU 11.50
Availability: Available from the (2)
ISBN: ISBN 92-827-6519-9
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