Effects of Amorphous Modification on Microstructure and Mechanical Properties of Ultrahigh Carbon Steel Fe-1.89C-1.50Cr-0.33Si-0.60Mn

J. M. Li, Q. S. Liu, F. Wang, X. Zhang

2018

Abstract

The ultra-high carbon steel with a carbon content close to the upper limit (1.89wt.% C) was modified by the amorphous rare earth (RE) calcium silicate modifier. Microstructure characterization were carried out with optical microscopy(OM) and scanning electronic microscopy(SEM) combined with X-ray diffraction(XRD). Upon amorphous modification, the granular austenite was formed and the formation of eutectic ledeburite is effectively restrained. Furthermore, when the content of amorphous modifier reached 0.2wt.%, the precipitation of eutectic ledeburite was completely suppressed. In addition, the mechanical property testing showed that the tensile strength and impact toughness reached 1340 MPa and 11.5 J/cm2, respectively, much higher than that of the unmodified samples, 27.62% and 43.75% higher than that of crystalline modified samples. In particular, the impact toughness value is comparable to that of crystalline modified samples with secondary treatment.

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Paper Citation


in Harvard Style

Li J., Liu Q., Wang F. and Zhang X. (2018). Effects of Amorphous Modification on Microstructure and Mechanical Properties of Ultrahigh Carbon Steel Fe-1.89C-1.50Cr-0.33Si-0.60Mn.In Proceedings of the International Workshop on Materials, Chemistry and Engineering - Volume 1: IWMCE, ISBN 978-989-758-346-9, pages 500-506. DOI: 10.5220/0007440705000506


in Bibtex Style

@conference{iwmce18,
author={J. M. Li and Q. S. Liu and F. Wang and X. Zhang},
title={Effects of Amorphous Modification on Microstructure and Mechanical Properties of Ultrahigh Carbon Steel Fe-1.89C-1.50Cr-0.33Si-0.60Mn},
booktitle={Proceedings of the International Workshop on Materials, Chemistry and Engineering - Volume 1: IWMCE,},
year={2018},
pages={500-506},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0007440705000506},
isbn={978-989-758-346-9},
}


in EndNote Style

TY - CONF

JO - Proceedings of the International Workshop on Materials, Chemistry and Engineering - Volume 1: IWMCE,
TI - Effects of Amorphous Modification on Microstructure and Mechanical Properties of Ultrahigh Carbon Steel Fe-1.89C-1.50Cr-0.33Si-0.60Mn
SN - 978-989-758-346-9
AU - Li J.
AU - Liu Q.
AU - Wang F.
AU - Zhang X.
PY - 2018
SP - 500
EP - 506
DO - 10.5220/0007440705000506