The Microstructure and Hardness of ZrO2 Reinforced 24CrNiMoY Alloy Prepared by SLM

Chaofan Shi, Suiyuan Chen, Qing Xia, Zhuang Li

Abstract

In this paper, 1.5% ZrO2 was added in 24CrNiMoY alloy steel powder to form a composite powder, and the alloy steel sample was prepared by selective laser melting technology. Effects of different laser power and scanning speed on the microstructure and hardness of the fabricated sample were studied by OM, XRD, SEM and hardness test. The results show that when the optimized laser power is 1700 W and scanning speed is 10mm/s, the phase structure is composed of martensite, bainite, ferrite and carbide. The microstructure is uniform and fine, there are no cracks in the fabricated sample, the porosity is 0.96%. The average hardness is 467 HV, ZrO2 plays a role on improving the hardness. The alloy steel sample prepared by SLM has a fine microstructure and high hardness, which provides a basis for laser additive manufacturing of high-speed brake disc.

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Paper Citation


in Harvard Style

Shi C., Chen S., Xia Q. and Li Z. (2018). The Microstructure and Hardness of ZrO2 Reinforced 24CrNiMoY Alloy Prepared by SLM.In Proceedings of the 2nd International Conference on Intelligent Manufacturing and Materials - Volume 1: ICIMM, ISBN 978-989-758-345-2, pages 235-239. DOI: 10.5220/0007529702350239


in Bibtex Style

@conference{icimm18,
author={Chaofan Shi and Suiyuan Chen and Qing Xia and Zhuang Li},
title={The Microstructure and Hardness of ZrO2 Reinforced 24CrNiMoY Alloy Prepared by SLM},
booktitle={Proceedings of the 2nd International Conference on Intelligent Manufacturing and Materials - Volume 1: ICIMM,},
year={2018},
pages={235-239},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0007529702350239},
isbn={978-989-758-345-2},
}


in EndNote Style

TY - CONF

JO - Proceedings of the 2nd International Conference on Intelligent Manufacturing and Materials - Volume 1: ICIMM,
TI - The Microstructure and Hardness of ZrO2 Reinforced 24CrNiMoY Alloy Prepared by SLM
SN - 978-989-758-345-2
AU - Shi C.
AU - Chen S.
AU - Xia Q.
AU - Li Z.
PY - 2018
SP - 235
EP - 239
DO - 10.5220/0007529702350239