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The mechanical properties and corrosion resistance of selective laser melting 30CrMnSiA steel

Haoyue Zhang (Key Laboratory for Corrosion and Protection (MOE), School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, China)
Luqi Chang (Key Laboratory for Corrosion and Protection (MOE), School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, China)
Hongwei Zhang (Key Laboratory for Corrosion and Protection (MOE), School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, China)
Junyan Li (Key Laboratory for Corrosion and Protection (MOE), School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, China)
Zijiang Yang (Key Laboratory for Corrosion and Protection (MOE), School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, China)
Bingxuan Qiao (Key Laboratory for Corrosion and Protection (MOE), School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, China)
Zhenjiang Zhao (Key Laboratory for Corrosion and Protection (MOE), School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, China)
Chaofang Dong (Key Laboratory for Corrosion and Protection (MOE), School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, China)
Kai Zhang (Southwest Technology and Engineering Research Institute, Chongqing, China)

Anti-Corrosion Methods and Materials

ISSN: 0003-5599

Article publication date: 27 November 2020

Issue publication date: 4 December 2020

212

Abstract

Purpose

The purpose of this paper is to study the mechanical and corrosion behaviors of selective laser melting (SLM) 30CrMnSiA steel.

Design/methodology/approach

The microstructure, mechanical behavior and corrosion resistance of SLM 30CrMnSiA steel were studied by electrochemical test and immersion experiment.

Findings

The results showed that the microstructure of SLM 30CrMnSiA steel contained equiaxed fine (25.0 µm) ferrite and lamellar pearlite. The tensile strength of SLM 30CrMnSiA steel under the process parameters is 1,447 MPa and the elongation is 7.5%. As the immersion/salt spray test time increased to 15 days/48 h, corrosion mainly occurred in the local position of the sample and corrosion resistance decreased. When the immersion/salt spray test time increased to 30 days/168 h, the corrosion production covered the surface of the samples and the corrosion resistance increased.

Originality/value

The paper can guide the application and in situ repair for low-alloy steel by additive manufacturing.

Keywords

Acknowledgements

This work was supported by the National Key Research and Development Program of China (No. 2017YFB 0702300), National Natural Science Foundation of China (No. 51871028) and the Fundamental Research Funds for the Central Universities (No. FRF-TP-18-002B2).

Citation

Zhang, H., Chang, L., Zhang, H., Li, J., Yang, Z., Qiao, B., Zhao, Z., Dong, C. and Zhang, K. (2020), "The mechanical properties and corrosion resistance of selective laser melting 30CrMnSiA steel", Anti-Corrosion Methods and Materials, Vol. 67 No. 6, pp. 575-581. https://doi.org/10.1108/ACMM-07-2020-2343

Publisher

:

Emerald Publishing Limited

Copyright © 2020, Emerald Publishing Limited

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