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Cracking resistance behavior of HVAF-sprayed monolayer and hierarchical Fe-based amorphous coatings under bending stress
Yang, Fan1,2; Zhang, Suode1; Han, Dong1; Wang, Xiaoming3; Yang, Baijun1; Wang, Jianqiang1
通讯作者Yang, Baijun(bjyang@imr.ac.cn) ; Wang, Jianqiang(jqwang@imr.ac.cn)
2024-10-30
发表期刊SURFACE & COATINGS TECHNOLOGY
ISSN0257-8972
卷号494页码:13
摘要The bending strength and fracture toughness are two key indicators that determine the service performance of thermally sprayed Fe-based amorphous coatings (AMCs) in harsh environments. Unfortunately, due to the inherent heterogeneous porosity and limited thickness (typically <1 mm) of the coatings, obtaining these properties is constrained by traditional fracture analysis methods. To address this, a three-point bending combined with the digital image correlation (DIC) method, without prefabricating notch or removing substrate, was proposed in the current work, and the effect of hierarchical structures on the fracture performance of the coatings was successfully revealed. Excitingly, the results show that compared to monolayer coating, hierarchical structures comprising two layers with different porosities can realize the synergistic improvement in the fracture strength and fracture strain of the coatings by alleviating local stress concentration and inducing crack deflection. Further, a finite element method (FEM) was employed to gain insight into the intrinsic relationship between the coating microstructures and the crack evolution behavior. This work not only proposes a simple method for evaluating the fracture performance of Fe-based AMCs sprayed with high velocity air fuel (HVAF), but also presents an innovative idea for optimizing the coating's properties.
关键词Hierarchical structure Three-point bending DIC Crack deflection FEM HVAF
资助者National Key Research and Devel-opment Program ; National Natural Science Foundation of China ; Key Research Program of the Chinese Academy of Sciences
DOI10.1016/j.surfcoat.2024.131417
收录类别SCI
语种英语
资助项目National Key Research and Devel-opment Program[2022YFF0609002] ; National Natural Science Foundation of China[U1908219] ; National Natural Science Foundation of China[52171163] ; National Natural Science Foundation of China[52001148] ; Key Research Program of the Chinese Academy of Sciences[ZDRW-CN-2021-2-2]
WOS研究方向Materials Science ; Physics
WOS类目Materials Science, Coatings & Films ; Physics, Applied
WOS记录号WOS:001331073200001
出版者ELSEVIER SCIENCE SA
引用统计
文献类型期刊论文
条目标识符http://ir.imr.ac.cn/handle/321006/190528
专题中国科学院金属研究所
通讯作者Yang, Baijun; Wang, Jianqiang
作者单位1.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
3.Natl Key Lab Remfg, Beijing 100072, Peoples R China
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GB/T 7714
Yang, Fan,Zhang, Suode,Han, Dong,et al. Cracking resistance behavior of HVAF-sprayed monolayer and hierarchical Fe-based amorphous coatings under bending stress[J]. SURFACE & COATINGS TECHNOLOGY,2024,494:13.
APA Yang, Fan,Zhang, Suode,Han, Dong,Wang, Xiaoming,Yang, Baijun,&Wang, Jianqiang.(2024).Cracking resistance behavior of HVAF-sprayed monolayer and hierarchical Fe-based amorphous coatings under bending stress.SURFACE & COATINGS TECHNOLOGY,494,13.
MLA Yang, Fan,et al."Cracking resistance behavior of HVAF-sprayed monolayer and hierarchical Fe-based amorphous coatings under bending stress".SURFACE & COATINGS TECHNOLOGY 494(2024):13.
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