Cracking resistance behavior of HVAF-sprayed monolayer and hierarchical Fe-based amorphous coatings under bending stress

doi:10.1016/j.surfcoat.2024.131417

IMR OpenIR

	Cracking resistance behavior of HVAF-sprayed monolayer and hierarchical Fe-based amorphous coatings under bending stress
	Yang, Fan 1,2; Zhang, Suode 1; Han, Dong 1; Wang, Xiaoming 3; Yang, Baijun 1; Wang, Jianqiang 1
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
ISSN	0257-8972
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
DOI	10.1016/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
推荐引用方式 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.