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.

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