Mechanical and corrosion properties of nano ZrC reinforced FeCrAl alloys

IF 2.3 4区材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING Anti-corrosion Methods and Materials Pub Date : 2023-12-13 DOI:10.1108/acmm-09-2023-2896

Zhenyu Ma, Yupeng Zhang, Xuguang An, Jing Zhang, Qingquan Kong, Hui Wang, Weitang Yao, Qingyuan Wang

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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.

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纳米 ZrC 增强铁铬铝合金的机械和腐蚀特性

目的研究纳米ZrC颗粒对FeCrAl合金力学性能和电化学腐蚀性能的影响，为今后开发具有良好力学性能和腐蚀性能的高性能碳化物增强FeCrAl合金提供有益的参考依据。分别用 X 射线衍射、扫描电子显微镜和能量色散 X 射线光谱分析了纳米 ZrC 增强铁铬铝合金的相组成、拉伸断口形貌、腐蚀形貌和化学成分。用机械试验机和维氏硬度计研究了纳米 ZrC 增强铁铬铝合金的显微硬度和拉伸性能。结果表明，纳米 ZrC 的添加能有效改善铁铬铝合金的机械性能和腐蚀性能。然而，过量的纳米 ZrC 会降低力学性能和耐腐蚀性能。在所有铁铬铝合金中，FeCrAl-0.6 wt.% ZrC 合金的机械性能最佳，其极限抗拉强度、伸长率和硬度分别为 990.7 MPa、24.1% 和 335.8 HV1；与其他铁铬铝合金相比，FeCrAl-0.2 wt.% ZrC 合金的腐蚀电位（-0.179 V）和腐蚀电流密度（2.099 µA/cm2）更低，点蚀电位（0.497 V），显示出较好的耐腐蚀性能。原创性/价值添加适当的纳米ZrC颗粒可有效改善FeCrAl合金的力学性能和腐蚀性能，而过量的纳米ZrC对FeCrAl合金的力学性能和腐蚀性能有害，这为开发高性能的FeCrAl覆层材料提供了指导。

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来源期刊

Anti-corrosion Methods and Materials 工程技术-冶金工程

CiteScore

2.80

自引率

16.70%

发文量

审稿时长

13.5 months

期刊介绍： Anti-Corrosion Methods and Materials publishes a broad coverage of the materials and techniques employed in corrosion prevention. Coverage is essentially of a practical nature and designed to be of material benefit to those working in the field. Proven applications are covered together with company news and new product information. Anti-Corrosion Methods and Materials now also includes research articles that reflect the most interesting and strategically important research and development activities from around the world. Every year, industry pays a massive and rising cost for its corrosion problems. Research and development into new materials, processes and initiatives to combat this loss is increasing, and new findings are constantly coming to light which can help to beat corrosion problems throughout industry. This journal uniquely focuses on these exciting developments to make essential reading for anyone aiming to regain profits lost through corrosion difficulties. • New methods, materials and software • New developments in research and industry • Stainless steels • Protection of structural steelwork • Industry update, conference news, dates and events • Environmental issues • Health & safety, including EC regulations • Corrosion monitoring and plant health assessment • The latest equipment and processes • Corrosion cost and corrosion risk management.