Mechanical and corrosion properties of nano ZrC reinforced FeCrAl alloys
Anti-Corrosion Methods and Materials
ISSN: 0003-5599
Article publication date: 13 December 2023
Issue publication date: 2 January 2024
Abstract
Purpose
The purpose of this study is to investigate the effect of nano ZrC particles on the mechanical and electrochemical corrosion properties of FeCrAl alloys, providing a beneficial reference basis for the development of high-performance carbide reinforced FeCrAl alloys with good mechanical and corrosion properties in the future.
Design/methodology/approach
Nano ZrC reinforced FeCrAl alloys were prepared by mechanical alloying and spark plasma sintering. Phases composition, tensile fractography, corrosion morphology and chemical composition of nano ZrC reinforced FeCrAl alloys were analyzed by X-ray diffraction, scanning electron microscopy and energy dispersive X-ray spectroscopy, respectively. Microhardness and tensile properties of nano ZrC reinforced FeCrAl alloys were investigated by mechanical testing machine and Vickers hardness tester. Electrochemical corrosion properties of nano ZrC reinforced FeCrAl alloys were investigated by electrochemical workstation in 3.5 wt.% NaCl solution.
Findings
The results showed that addition of nano ZrC can effectively improve the mechanical and corrosion properties. However, excessive nano ZrC could decrease the mechanical properties and reduce the corrosion resistance. In all the FeCrAl alloys, FeCrAl–0.6 wt.% ZrC alloy exhibits the optimum mechanical properties with an ultimate tensile strength, elongation and hardness of 990.7 MPa, 24.1% and 335.8 HV1, respectively, and FeCrAl–0.2 wt.% ZrC alloy has a lower corrosion potential (−0.179 V) and corrosion current density (2.099 µA/cm2) and larger pitting potential (0.497 V) than other FeCrAl–ZrC alloys, showing a better corrosion resistance.
Originality/value
Adding proper nano ZrC particles can effectively improve the mechanical and corrosion properties, while the excessive nano ZrC is harmful to the mechanical and corrosion properties of FeCrAl alloys, which provides an instruction to develop high-performance FeCrAl cladding materials.
Keywords
Acknowledgements
This work was supported by the National Natural Science Foundation of China (NO. 12375257, 12375273, 52371042, 12275318) and the Sichuan Science and Technology Program (No. 2022JDRC0085).
Yupeng Zhang contributed equally and should be regarded as co-first authors.
Declaration of competing interest: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
Citation
Ma, Z., Zhang, Y., An, X., Zhang, J., Kong, Q., Wang, H., Yao, W. and Wang, Q. (2024), "Mechanical and corrosion properties of nano ZrC reinforced FeCrAl alloys", Anti-Corrosion Methods and Materials, Vol. 71 No. 1, pp. 55-64. https://doi.org/10.1108/ACMM-09-2023-2896
Publisher
:Emerald Publishing Limited
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