Effect of FeTi-FeB inoculation on the shape of carbide reinforcements in hypoeutectic high chromium white cast iron

Tanju Teker; S. Osman Yilmaz; İ. Savaş Dalmiş

doi:10.1515/mt-2021-2047

Article

Effect of FeTi-FeB inoculation on the shape of carbide reinforcements in hypoeutectic high chromium white cast iron

Tanju Teker , S. Osman Yilmaz and İ. Savaş Dalmiş

Published/Copyright: March 16, 2022

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From the journal Materials Testing Volume 64 Issue 3

Abstract

FeTi-FeB was added to molten high chromium white cast iron in amounts of 0.5–2.5 wt% at 50 °C above the melting temperature. The samples were produced in four groups. The first group samples were investigated as cast, the second group homogenized at 1000 °C for 1 h, and the other two groups were also homogenized at 1000 °C but for 3 and 6 h, respectively. To study the effect of FeB and FeTi on the microstructure, the samples were characterized by optical microscopy, scanning electron microscopy, energy dispersive spectroscopy, X-ray diffraction and hardness tests. Wear tests were performed using a pin-on disc. A homogeneously dispersed carbide microstructure was produced by the homogenization heat treatment method. The addition of FeTi-FeB inoculants to high Cr white cast iron played an important role in the distribution of hard carbides. The chemical rate and the carbide volume varied on account of the added hard inoculant particles. TiB₂, Cr₃C₂, M₇C₃, M₂₃C₆, and γ-FeCr phases formed on the surfaces. The hardness and wear resistance were improved considerably due to FeTi-B inoculation.

Keywords: FeB; FeTi; heat treatment; inoculation; microstructure; white cast iron

Corresponding author: Tanju Teker, Department of Manufacturing Engineering, Faculty of Technology, University of Sivas Cumhuriyet, 58140, Sivas, Turkey, E-mail: tanjuteker@cumhuriyet.edu.tr

Acknowledgments

This work was supported by Domex. The authors are grateful to Domex for their assistance in conducting the experiments.

Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Research funding: None declared.
Conflict of interest statement: The authors declare no conflicts of interest regarding this article.

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Published Online: 2022-03-16

Published in Print: 2022-03-28

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Articles in the same Issue

https://doi.org/10.1515/mt-2021-2047

Keywords for this article

FeB; FeTi; heat treatment; inoculation; microstructure; white cast iron