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Impact Wear Evolution Mechanism of Fe2Ni2CrV0.5Nb0.8 Eutectic High-Entropy Alloy Coating under Dynamic Cyclic Impacts

文献类型：期刊论文

作者Li, Yingying6; Liu, Hao5; Wang, Wenqin4; Pan, Sining3; Chen, Peijian2; He XL(何秀丽)1; Yu G(虞钢)1
刊名JOURNAL OF THERMAL SPRAY TECHNOLOGY
出版日期2025-06-09
页码14
关键词damage mechanism eutectic high-entropy alloys impact wear laser cladding
ISSN号1059-9630
DOI10.1007/s11666-025-02019-y
通讯作者Liu, Hao(liuhao56@cumt.edu.cn)
英文摘要The dynamic impact test of eutectic high-entropy alloy (EHEA) coating composed of alternating arrangement of soft and hard phases is employed to investigate the damage accumulation principles under impact cycles combined with microstructure characteristic. The Fe2Ni2CrV0.5Nb0.8 EHEA coating presents a typical hypoeutectic alloys structure with the lamellar eutectic colonies of Laves and FCC phase uniformly dispersed within the primary FCC solid solution matrix. The Laves phase, serving as the primary load-bearing constituent, provides exceptional deformation resistance, while the FCC phase accommodates plastic strain to mitigate stress concentration and suppress crack initiation. The coating undergoes plastic deformation during the initial stage (10-1000 cycles), and the impact wear volume increases slowly. The impact energy dissipation under impact loading is predominantly attributed to elastic-plastic deformation. The slight edge damage stage exceeding 5000 cycles is characterized by oxidative wear. The tangential shear force at the edge position induce material spalling and accelerating impact wear volume growth, progressively elevating energy loss via wear. As the impact cycles approaches 15000, the material exhausts its capacity for further plastic deformation, shifting energy dissipation predominantly to wear-driven mechanisms. The high residual stresses formed on the impact crater surface initiate microcracks, promoting oxide layer exfoliation. Fatigue wear governs the failure mechanism, accompanied by a sharp rise in wear rate due to cyclic stress-induced crack propagation.
分类号二类
WOS关键词BEHAVIOR ; MICROSTRUCTURE
资助项目National Natural Science Foundation of China[52375223] ; National Natural Science Foundation of China[52065018] ; Advanced Analysis and Computation Center, China University of Mining and Technology
WOS研究方向Materials Science
语种英语
WOS记录号WOS:001504498600001
资助机构National Natural Science Foundation of China ; Advanced Analysis and Computation Center, China University of Mining and Technology
其他责任者Liu, Hao
源URL[http://dspace.imech.ac.cn/handle/311007/101793]  
专题宽域飞行工程科学与应用中心
作者单位1.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China
2.China Univ Min & Technol, Sch Mech & Civil Engn, Xuzhou 221116, Peoples R China;
3.Hezhou Univ, Sch Artificial Intelligence, Hezhou 542899, Peoples R China;
4.Nanchang Univ, Sch Adv Mfg, Nanchang 330031, Peoples R China;
5.China Univ Min & Technol, Sch Mech & Elect Engn, Xuzhou 221116, Peoples R China;
6.Nanjing Univ Aeronaut & Astronaut, Coll Mech & Elect Engn, Nanjing 210016, Peoples R China;
推荐引用方式
GB/T 7714		 Li, Yingying,Liu, Hao,Wang, Wenqin,et al. Impact Wear Evolution Mechanism of Fe2Ni2CrV0.5Nb0.8 Eutectic High-Entropy Alloy Coating under Dynamic Cyclic Impacts[J]. JOURNAL OF THERMAL SPRAY TECHNOLOGY,2025:14.
APA Li, Yingying.,Liu, Hao.,Wang, Wenqin.,Pan, Sining.,Chen, Peijian.,...&虞钢.(2025).Impact Wear Evolution Mechanism of Fe2Ni2CrV0.5Nb0.8 Eutectic High-Entropy Alloy Coating under Dynamic Cyclic Impacts.JOURNAL OF THERMAL SPRAY TECHNOLOGY,14.
MLA Li, Yingying,et al."Impact Wear Evolution Mechanism of Fe2Ni2CrV0.5Nb0.8 Eutectic High-Entropy Alloy Coating under Dynamic Cyclic Impacts".JOURNAL OF THERMAL SPRAY TECHNOLOGY (2025):14.

入库方式： OAI收割

来源：力学研究所

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