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Study on the Microstructure and Mechanical Properties of Laser-Clad WC/AlCoCrFeNi2.1 High-Entropy Alloy Composite Coatings AITranslate

LIU Si-yuan; NONG Zhi-sheng; CUI Xue; XU Qian-gang; ZHANG Hong-liang; YURII Luhovskyi
School of Materials Science and Engineering,Shenyang Aerospace University;School of Materials Science and Engineering,Shenyang Aerospace University;School of Materials Science and Engineering,Shenyang Aerospace University;School of Materials Science and Engineering,Shenyang Aerospace University;School of Materials Science and Engineering,Shenyang Aerospace University;School of Materials Science and Engineering,Shenyang Aerospace University
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Publisher: Editorial Office of Rare Metals and Cemented Carbides
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Abstract AITranslate

To enhance the surface properties of H13 steel,a WC/AlCoCrFeNi2.1 high-entropy alloy composite coating was prepared on the surface of H13 steel using laser cladding technology.The effect of laser power on the microstructure,phase composition,hardness and friction and wear performance of the WC/AlCoCrFeNi2.1 composite coating was studied.The results show that the laser power does not affect the phase composition of the coating.Due to the combined effect of high mixing entropy and cooling rate during laser cladding,the composite coating is composed of body-centered cubic and face-centered cubic solid solutions.The cladding layer has a typical eutectic high-entropy alloy dendritic structure.With the increase of laser power,the microstructure becomes finer first and then coarser.When the laser power is 2000 W,the WC particles melt and decompose into small-sized particles under the action of the high-energy laser beam.Due to the combined effect of fine grain strengthening and solid solution strengthening,the hardness of the composite coating reaches its maximum at this time,increased by approximately 1 times compared to the substrate.The two-phase solid solution structure of the WC/AlCoCrFeNi2.1 composite coating refines the grooves on the friction surface,thereby improving the wear resistance of H13 steel.The friction coefficients of the coating at room temperature and 400℃under 2000 W laser power are about 1/3 of those of the substrate.The main wear mechanisms of the coating are abrasive wear and oxidative wear at room-temperature,while oxidative wear intensifies at 400℃.

KeyWords AITranslate

high-entropy alloy coating tungsten carbide laser cladding friction and wear laser power
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Basic Information:

DOI：

Chinese Library Classification Number:TG174.4[金属学及工艺]

Citation Information:

To enhance the surface properties of H13 steel,a WC/AlCoCrFeNi2.1 high-entropy alloy composite coating was prepared on the surface of H13 steel using laser cladding technology.The effect of laser power on the microstructure,phase composition,hardness and friction and wear performance of the WC/AlCoCrFeNi2.1 composite coating was studied.The results show that the laser power does not affect the phase composition of the coating.Due to the combined effect of high mixing entropy and cooling rate during laser cladding,the composite coating is composed of body-centered cubic and face-centered cubic solid solutions.The cladding layer has a typical eutectic high-entropy alloy dendritic structure.With the increase of laser power,the microstructure becomes finer first and then coarser.When the laser power is 2000 W,the WC particles melt and decompose into small-sized particles under the action of the high-energy laser beam.Due to the combined effect of fine grain strengthening and solid solution strengthening,the hardness of the composite coating reaches its maximum at this time,increased by approximately 1 times compared to the substrate.The two-phase solid solution structure of the WC/AlCoCrFeNi2.1 composite coating refines the grooves on the friction surface,thereby improving the wear resistance of H13 steel.The friction coefficients of the coating at room temperature and 400℃under 2000 W laser power are about 1/3 of those of the substrate.The main wear mechanisms of the coating are abrasive wear and oxidative wear at room-temperature,while oxidative wear intensifies at 400℃.

quote

GB/T 7714-2015 [1] LIU Si-yuan, NONG Zhi-sheng, CUI Xue, et al. Study on the Microstructure and Mechanical Properties of Laser-Clad WC/AlCoCrFeNi2.1 High-Entropy Alloy Composite Coatings[J]. Rare Metals and Cemented Carbides, 2026(1): 38-48.
MLA [1] LIU Si-yuan, et al., "Study on the Microstructure and Mechanical Properties of Laser-Clad WC/AlCoCrFeNi2.1 High-Entropy Alloy Composite Coatings." Rare Metals and Cemented Carbides, no. 1, 2026, pp. 38-48.
APA [1] LIU Si-yuan, NONG Zhi-sheng, CUI Xue, XU Qian-gang, ZHANG Hong-liang, & YURII Luhovskyi. (2026). Study on the Microstructure and Mechanical Properties of Laser-Clad WC/AlCoCrFeNi2.1 High-Entropy Alloy Composite Coatings. Rare Metals and Cemented Carbides(1), 38-48.
IEEE [1] LIU Si-yuan, NONG Zhi-sheng, CUI Xue, XU Qian-gang, ZHANG Hong-liang, and YURII Luhovskyi, "Study on the Microstructure and Mechanical Properties of Laser-Clad WC/AlCoCrFeNi2.1 High-Entropy Alloy Composite Coatings," Rare Metals and Cemented Carbides, no. 1, pp. 38-48, 2026. keywords: {high-entropy alloy coating;tungsten carbide;laser cladding;friction and wear;laser power}