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Wear property of ductile iron locally reinforced with Cr-containing steel inserts

Martinez Celis, Mayerling and Valle, Nathalie and Lacaze, Jacques and Thorbjornsson, Ingólfur Örn and Johannesson, Birgir and Thorgrimsson, Jon Thor and Pogornik, Bojan and Vizintin, Joze Wear property of ductile iron locally reinforced with Cr-containing steel inserts. (2010) Key Engineering Materials, 457. 441-446. ISSN 1013-9826

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Official URL: http://dx.doi.org/10.4028/www.scientific.net/KEM.457.441

Abstract

The influence on the wear properties of ductile iron with Cr-containing steel inserts has been investigated before and after austempering. The microstructure of locally reinforced ductile iron, with and without an austempering treatment, has been characterized using optical microscopy, scanning and transmission electron microscopy and secondary ion mass spectrometry. The introduction of such inserts during casting leads to the precipitation of carbides M3C, M7C3 and M23C6 (M stands for Fe and/or Cr) inside the inserts and to M3C and M7C3 in the region surrounding the inserts. After austempering, a partial dissolution of these latter carbides and transformation of the matrix to ausferrite occur. The wear properties of these materials have been evaluated under reciprocating sliding motion using cylinder-on-disc line contact configuration. The results of the present investigation show a better wear behavior of the reinforced material related to the microstructural changes observed.

Item Type:Article
HAL Id:hal-00865736
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > Centre de Recherche Public - CRP Gabriel Lippmann (LUXEMBOURG)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Other partners > Innovation Center Iceland (ICELAND)
Other partners > Malmsteypa Thorgrims Jonssonar (ICELAND)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Other partners > University of Ljubljana (SLOVENIA)
Laboratory name:
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Deposited By: Denis Faragou
Deposited On:25 Sep 2013 07:19

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