Effect of WC on the microstructure and wear resistance of Invar-WC coatings prepared by laser fusion cladding

Invar alloys are frequently utilized in the production of composite molds, owing to their excellent dimensional stability and closely matched coefficient of thermal expansion to that of the composite materials. The inherent wear resistance of Invar alloys is limited, which significantly impacts thei...

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Main Authors: Yuheng Li, Qiyu Gao, Xiaohu Guan, Feixiang Tian, Binbin Li, Xiaohong Zhan
Format: Article
Language:English
Published: Elsevier 2025-01-01
Series:Journal of Materials Research and Technology
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Online Access:http://www.sciencedirect.com/science/article/pii/S2238785424029715
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author Yuheng Li
Qiyu Gao
Xiaohu Guan
Feixiang Tian
Binbin Li
Xiaohong Zhan
author_facet Yuheng Li
Qiyu Gao
Xiaohu Guan
Feixiang Tian
Binbin Li
Xiaohong Zhan
author_sort Yuheng Li
collection DOAJ
description Invar alloys are frequently utilized in the production of composite molds, owing to their excellent dimensional stability and closely matched coefficient of thermal expansion to that of the composite materials. The inherent wear resistance of Invar alloys is limited, which significantly impacts their overall service life. Therefore, in this study, Invar-WC coating and laser remelting coating were prepared on the surface of Invar alloy by laser cladding technology. The microstructures and phase compositions of the different coatings were analyzed, and the hardness and wear resistance of the two coatings were tested and observed in the wear micro-morphology. The results show that the two coatings are well formed. The main phase composition of Invar-WC coating is Fe0.64Ni0.36, and the reinforcing phases such as W2C、M7C3, were formed in the substrate under the effect of W and C elements. The wear resistance of the remelted coating was increased by 63.55% over the substrate, and the wear resistance of the Invar-WC coating was further increased by 97.69% over the substrate. The Invar-WC coating was strengthened by fine grain reinforcement and the second phase reinforcement under the action of WC particles, which led to the increase of the hardness of the Invar-WC coating, and the enhancement of the wear-resistant property. Meanwhile, the wear mechanism of the substrate and laser remelting is characterized by adhesive wear, while the wear mechanism of the Invar-WC coating is characterized by abrasive wear due to the presence of WC particles, resulting in a significant increase in wear resistance.
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spelling doaj-art-f965d2bb1c484fd8b80ec2e1f5e2a1792025-01-19T06:25:42ZengElsevierJournal of Materials Research and Technology2238-78542025-01-013422852297Effect of WC on the microstructure and wear resistance of Invar-WC coatings prepared by laser fusion claddingYuheng Li0Qiyu Gao1Xiaohu Guan2Feixiang Tian3Binbin Li4Xiaohong Zhan5College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, ChinaCollege of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, ChinaCollege of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, ChinaCollege of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, ChinaCollege of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, ChinaCollege of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, ChinaInvar alloys are frequently utilized in the production of composite molds, owing to their excellent dimensional stability and closely matched coefficient of thermal expansion to that of the composite materials. The inherent wear resistance of Invar alloys is limited, which significantly impacts their overall service life. Therefore, in this study, Invar-WC coating and laser remelting coating were prepared on the surface of Invar alloy by laser cladding technology. The microstructures and phase compositions of the different coatings were analyzed, and the hardness and wear resistance of the two coatings were tested and observed in the wear micro-morphology. The results show that the two coatings are well formed. The main phase composition of Invar-WC coating is Fe0.64Ni0.36, and the reinforcing phases such as W2C、M7C3, were formed in the substrate under the effect of W and C elements. The wear resistance of the remelted coating was increased by 63.55% over the substrate, and the wear resistance of the Invar-WC coating was further increased by 97.69% over the substrate. The Invar-WC coating was strengthened by fine grain reinforcement and the second phase reinforcement under the action of WC particles, which led to the increase of the hardness of the Invar-WC coating, and the enhancement of the wear-resistant property. Meanwhile, the wear mechanism of the substrate and laser remelting is characterized by adhesive wear, while the wear mechanism of the Invar-WC coating is characterized by abrasive wear due to the presence of WC particles, resulting in a significant increase in wear resistance.http://www.sciencedirect.com/science/article/pii/S2238785424029715Laser claddingLaser remeltingInvarWCWear resistance
spellingShingle Yuheng Li
Qiyu Gao
Xiaohu Guan
Feixiang Tian
Binbin Li
Xiaohong Zhan
Effect of WC on the microstructure and wear resistance of Invar-WC coatings prepared by laser fusion cladding
Journal of Materials Research and Technology
Laser cladding
Laser remelting
Invar
WC
Wear resistance
title Effect of WC on the microstructure and wear resistance of Invar-WC coatings prepared by laser fusion cladding
title_full Effect of WC on the microstructure and wear resistance of Invar-WC coatings prepared by laser fusion cladding
title_fullStr Effect of WC on the microstructure and wear resistance of Invar-WC coatings prepared by laser fusion cladding
title_full_unstemmed Effect of WC on the microstructure and wear resistance of Invar-WC coatings prepared by laser fusion cladding
title_short Effect of WC on the microstructure and wear resistance of Invar-WC coatings prepared by laser fusion cladding
title_sort effect of wc on the microstructure and wear resistance of invar wc coatings prepared by laser fusion cladding
topic Laser cladding
Laser remelting
Invar
WC
Wear resistance
url http://www.sciencedirect.com/science/article/pii/S2238785424029715
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