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Journal of Materials Science

, Volume 42, Issue 16, pp 6769–6778 | Cite as

Wear behavior of TiB2 inoculated 20Cr–3Mo–4C high chromium white cast irons

  • Serdar Osman YilmazEmail author
Article

Abstract

FeTi, B2O3, Al, and FeW particulates, approximately 40–60 μm in size, were mixed in stoichiometric ratio and sintered at 1,200 °C. The sintered particulates were added as 5 wt% to molten high chromium white cast iron over 50 C-deg above the melting temperature, and stirred at 1,000 rpm. The samples were investigated in three groups: (1) high Cr white cast iron inoculated by the particulates sintered from Al–FeTi–B2O3 particulates; (2) high Cr white cast iron inoculated by the sintered particulates derived from Al–FeTi, B2O3, and FeW particulates; and (3) specimens of the second group that were subsequently homogenized. The microhardness of ceramic particulates was measured as 2,800–3,400 HV10. The effect of sintered particulate volume fraction on the abrasive wear resistance of the high chromium white cast iron was determined. The wear resistance and hardness of the composites improved significantly as a result of particulate inoculation. The application of the homogenization heat treatment to the inoculated samples produced a microstructure having homogeneously distributed particulates.

Keywords

Carbide Austenite Wear Rate B2O3 Abrasive Wear 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  1. 1.Department of Metallurgy, Faculty of Technical EducationUniversity of FiratElazigTurkey

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