Microstructure Formation and Oxidation Resistance of Laser-Cladding Al3.63Co10.58Cr13.41Fe51.28Mo12.15Ni8.95 Coating

IF 3.2 3区材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS Journal of Thermal Spray Technology Pub Date : 2024-09-27 DOI:10.1007/s11666-024-01834-z

Ning Liu, Pei Zhao, Pengjie Zhou, Qichen Zhou, Xiaoli Wang

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Abstract

In this work, Al_9.9Co_18.18Cr_18.18Fe_18.18Mo_18.18Ni_18.18 (at.%) high-entropy alloy was laser-cladded on the surface of H13 steel to extend the operating temperature range. Due to the dilution of substrate, coating with a composition of Al_3.63Co_10.58Cr_13.41Fe_51.28Mo_12.15Ni_8.95 (at.%) was achieved, which was a multi-phase system composed of FCC + BCC + σ + μ. Moreover, the phase transformation and the solidification behavior of the coating were studied in detail by utilizing phase diagram calculation. Oxidation resistance of the coating was also investigated and compared with that of H13 steel over temperature range of 600-800 °C. Both the coating and H13 steel show excellent oxidation resistance at 600 °C. After holding at 700 °C and 800 °C, the oxidation rate (the increment in oxide layer thickness per unit of time) of the coating is significantly smaller than that of H13 steel. It indicates that Al_3.63Co_10.58Cr_13.41Fe_51.28Mo_12.15Ni_8.95 coating has an advantage over H13 steel when oxidized over the temperature range of 700-800 °C. Based on the research in this work, the service temperature of H13 steel can be effectively extended by the Al_3.63Co_10.58Cr_13.41Fe_51.28Mo_12.15Ni_8.95 coating.

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激光熔覆 Al3.63Co10.58Cr13.41Fe51.28Mo12.15Ni8.95 涂层的微观结构形成与抗氧化性

在这项工作中，用激光在 H13 钢表面镀上了 Al9.9Co18.18Cr18.18Fe18.18Mo18.18Ni18.18 (at.%) 高熵合金，以扩大工作温度范围。由于基体的稀释，涂层的成分为 Al3.63Co10.58Cr13.41Fe51.28Mo12.15Ni8.95（at.%），这是一个由 FCC + BCC + σ + μ 组成的多相体系。此外，还通过相图计算详细研究了涂层的相变和凝固行为。还研究了涂层的抗氧化性，并与 H13 钢在 600-800 °C 温度范围内的抗氧化性进行了比较。涂层和 H13 钢在 600 °C 时都表现出优异的抗氧化性。在 700 ℃ 和 800 ℃ 保温后，涂层的氧化率（单位时间内氧化层厚度的增加）明显小于 H13 钢。这表明 Al3.63Co10.58Cr13.41Fe51.28Mo12.15Ni8.95 涂层在 700-800 ℃温度范围内氧化时比 H13 钢更具优势。根据这项研究，Al3.63Co10.58Cr13.41Fe51.28Mo12.15Ni8.95 涂层可有效延长 H13 钢的使用温度。

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来源期刊

Journal of Thermal Spray Technology 工程技术-材料科学：膜

CiteScore

5.20

自引率

25.80%

发文量

198

审稿时长

2.6 months

期刊介绍： From the scientific to the practical, stay on top of advances in this fast-growing coating technology with ASM International''s Journal of Thermal Spray Technology. Critically reviewed scientific papers and engineering articles combine the best of new research with the latest applications and problem solving. A service of the ASM Thermal Spray Society (TSS), the Journal of Thermal Spray Technology covers all fundamental and practical aspects of thermal spray science, including processes, feedstock manufacture, and testing and characterization. The journal contains worldwide coverage of the latest research, products, equipment and process developments, and includes technical note case studies from real-time applications and in-depth topical reviews.