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Hierarchical heterogeneous microstructure for enhanced wear resistance of CoCrFeMnNi high-entropy alloy coatings via in-situ rolling assisted laser cladding

文献类型：期刊论文

作者Liu, Hao3,4; Wang, Baochen4; Chen, Peijian2; Li, Dali4; Hao, Jingbin4; Yang, Haifeng4; He, Xiuli1; Yu, Gang1
刊名JOURNAL OF MANUFACTURING PROCESSES
出版日期2025-05-15
卷号141页码:105-120
关键词In-situ rolling Hierarchical heterostructure Laser cladding High-entropy alloy Tribological behavior
ISSN号1526-6125
DOI10.1016/j.jmapro.2025.02.066
通讯作者Wang, Baochen(ts22050055a31@cumt.edu.cn)
英文摘要Heterogeneous high-entropy alloys (HEAs) are promising materials due to their excellent mechanical properties. In this study, hierarchical heterostructures were introduced into CoCrFeMnNi HEA via an in-situ rolling (ISR) assisted laser cladding (LC) process. The microstructural evolution and tribological behavior of the ISR-assisted LC coating were investigated. Results indicate that porosity and surface roughness are significantly reduced, as the plastic flow during ISR-assisted LC closes pore and fills the surface valley. ISR induces a gradient distribution of dislocation density and grain size along the depth direction, and the thermal effect of subsequent laser track deposition leads to a tilted-strip distribution of grain size and geometrically necessary dislocations (GNDs) along the overlapping direction. During ISR-assisted LC process, the combined effects of deformation and recrystallization reduce the average grain size from 93.84 mu m to 32.47 mu m, decrease the texture intensity from 9.83 to 4.23, and extend the strain depth to 950 mu m. The reduction in porosity, increase in microhardness, and hierarchical heterostructure strengthening collectively enhance the wear resistance of the ISR-assisted LC coating. The volume wear rate reduces significantly from 1.740 x 10-4 mm3 center dot N- 1 center dot m- 1 to 0.133 x 10-4 mm3 center dot N- 1 center dot m- 1. This study provides a novel approach for the design of wear-resistant HEA coatings.
WOS关键词STRENGTH-DUCTILITY ; BEHAVIOR
资助项目National Natural Science Foundation of China[52375223] ; Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
WOS研究方向Engineering
语种英语
WOS记录号WOS:001437590400001
资助机构National Natural Science Foundation of China ; Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
源URL[http://dspace.imech.ac.cn/handle/311007/100208]  
专题宽域飞行工程科学与应用中心
通讯作者Wang, Baochen
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.China Univ Min & Technol, Jiangsu Collaborat Innovat Ctr Intelligent Min Equ, Xuzhou 221116, Peoples R China
4.China Univ Min & Technol, Sch Mech & Elect Engn, Xuzhou 221116, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Hao,Wang, Baochen,Chen, Peijian,et al. Hierarchical heterogeneous microstructure for enhanced wear resistance of CoCrFeMnNi high-entropy alloy coatings via in-situ rolling assisted laser cladding[J]. JOURNAL OF MANUFACTURING PROCESSES,2025,141:105-120.
APA Liu, Hao.,Wang, Baochen.,Chen, Peijian.,Li, Dali.,Hao, Jingbin.,...&Yu, Gang.(2025).Hierarchical heterogeneous microstructure for enhanced wear resistance of CoCrFeMnNi high-entropy alloy coatings via in-situ rolling assisted laser cladding.JOURNAL OF MANUFACTURING PROCESSES,141,105-120.
MLA Liu, Hao,et al."Hierarchical heterogeneous microstructure for enhanced wear resistance of CoCrFeMnNi high-entropy alloy coatings via in-situ rolling assisted laser cladding".JOURNAL OF MANUFACTURING PROCESSES 141(2025):105-120.

入库方式： OAI收割

来源：力学研究所

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