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	A quantitative analysis of the residual stress and grain size gradient effects on the energy release rate of a coating-substrate system
	Yang, Ban-Quan ; Li, Fa-Xin
	2011
关键词	Residual stress Grain size gradient Inhomogenous coatings Energy release rate THIN-FILMS HEAT-TREATMENT SURFACE
DOI	10.4028/www.scientific.net/AMR.226-228.356
英文摘要	The surface heat treatment can lead to the residual stress and inhomogenous effects in coating-substrate system. Based on the well-known Hall-Petch relationship between the coating yield strength and its grain size, the inhomogenous effect can be extended to the grain size gradient effect. In this work, a mechanical model of a coating-substrate specimen is developed to quantify the residual stress and grain size gradient effects on the energy release rate of the coating on its substrate. Using a Micro-Composite-Double-Cantilever Beam Model (MCDCBM), the analytic solutions can be derived, and they can be used to characterize the fracture toughness of the inhomogenous coatings on substrates in terms of the critical energy release rate. Finally, a numerical example is presented to show how the critical energy release rate is obtained.; Automation & Control Systems; Engineering, Mechanical; Materials Science, Multidisciplinary; EI; CPCI-S(ISTP); 0
语种	英语
内容类型	会议论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/406324]
专题	工学院
推荐引用方式 GB/T 7714	Yang, Ban-Quan,Li, Fa-Xin. A quantitative analysis of the residual stress and grain size gradient effects on the energy release rate of a coating-substrate system[C]. 见:.

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