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TEM analysis of centreline sulphide precipitates modified by titanium additions to low carbon steel

Journal Article


Abstract


  • Elongated inclusions, particularly MnS, contribute

    significantly to reduced ductility and toughness in hot

    rolled steel but earlier research indicated that these properties

    can be improved by titanium additions. Such additions to a

    steel result in titanium being dissolved in manganese sulphide

    or MnS being replaced by TiS and/or titanium carbosulphides.

    In the present study, a steel was designed to decrease alloying

    element segregation and to evaluate the effect of titanium on

    centreline sulphide precipitates. Precipitates were identified

    by using scanning electron microscopy and characterized

    by the use of transmission electron microscopy following

    sample preparation by focused ion beam milling techniques.

    Irontitanium-sulphides form in close proximity to MnS

    precipitates that contain iron. Evidence is provided that an

    increase in the titanium content of steel leads to an increase

    in the percentage of titanium contained in the iron sulphides

    and a decrease in the iron content of MnS inclusions.

UOW Authors


Publication Date


  • 2008

Citation


  • Aminorroaya-Yamini, S. & Dippenaar, R. J. 2008, 'TEM analysis of centreline sulphide precipitates modified by titanium additions to low carbon steel', Journal of Microscopy, vol. 232, no. 1, pp. 123-129.

Scopus Eid


  • 2-s2.0-52649132287

Ro Metadata Url


  • http://ro.uow.edu.au/engpapers/2840

Has Global Citation Frequency


Number Of Pages


  • 6

Start Page


  • 123

End Page


  • 129

Volume


  • 232

Issue


  • 1

Place Of Publication


  • United Kingdom

Abstract


  • Elongated inclusions, particularly MnS, contribute

    significantly to reduced ductility and toughness in hot

    rolled steel but earlier research indicated that these properties

    can be improved by titanium additions. Such additions to a

    steel result in titanium being dissolved in manganese sulphide

    or MnS being replaced by TiS and/or titanium carbosulphides.

    In the present study, a steel was designed to decrease alloying

    element segregation and to evaluate the effect of titanium on

    centreline sulphide precipitates. Precipitates were identified

    by using scanning electron microscopy and characterized

    by the use of transmission electron microscopy following

    sample preparation by focused ion beam milling techniques.

    Irontitanium-sulphides form in close proximity to MnS

    precipitates that contain iron. Evidence is provided that an

    increase in the titanium content of steel leads to an increase

    in the percentage of titanium contained in the iron sulphides

    and a decrease in the iron content of MnS inclusions.

UOW Authors


Publication Date


  • 2008

Citation


  • Aminorroaya-Yamini, S. & Dippenaar, R. J. 2008, 'TEM analysis of centreline sulphide precipitates modified by titanium additions to low carbon steel', Journal of Microscopy, vol. 232, no. 1, pp. 123-129.

Scopus Eid


  • 2-s2.0-52649132287

Ro Metadata Url


  • http://ro.uow.edu.au/engpapers/2840

Has Global Citation Frequency


Number Of Pages


  • 6

Start Page


  • 123

End Page


  • 129

Volume


  • 232

Issue


  • 1

Place Of Publication


  • United Kingdom