The estimation of residual stresses by the brittle thin film’s initial cracks on a ductile substrate subjected to tensile stresses

Published on Oct 1, 2021in Theoretical and Applied Fracture Mechanics3.021
· DOI :10.1016/J.TAFMEC.2021.103036
Qi Wang (TJU: Tianjin University), Linan Li7
Estimated H-index: 7
(TJU: Tianjin University)
+ 4 AuthorsYantao Zeng (TJU: Tianjin University)
Abstract null null Thin metal films in the nanometer range are extensively used for electronic and optoelectronic devices. However, the residual stress has a profound impact on the durability of the devices during their lifetime. This paper developed a two-dimensional (2D) elastic model to study the residual stress and opening-mode fractures (OMFs) in a film/substrate assembly. The fracture strength expressed by crack length is derived by the strength criterion. This paper also studies fragmentation of 100-400 nm thin Cr films on 125 μm polyimide substrates. The residual stress in the coating process is estimated based on the onset strains of fragmentation. For films with thicknesses of 100 nm, 200 nm, and 400 nm, the estimated residual stresses are -1.204 GPa, -0.889 GPa, and -0.305 GPa respectively. This method shows more convenient than some traditional methods (including the use of X-ray diffraction technique or other methods of determining curvature). The tensile fragmentation tests would provide data to verify the accuracy of the estimation during crack accumulation; a good agreement is found between the experimental results and those predicted using the estimated residual stresses.
📖 Papers frequently viewed together
2 Citations
1 Author (G. M. Lieber)
#1Jiang Guo (DUT: Dalian University of Technology)H-Index: 14
#2Haiyang Fu (DUT: Dalian University of Technology)H-Index: 1
Last. Renke Kang (DUT: Dalian University of Technology)H-Index: 21
view all 4 authors...
Abstract Residual stress is one of the main factors affecting the mechanical properties of materials, such as their strength, plasticity and surface integrity. For instance, tensile stress conditions can adversely affect material performance or component life, while compressive stress conditions can improve material fatigue strength. During the processing of integrated aviation structures, machining deformation caused by residual stress has become one of the most prominent manufacturing problems...
49 CitationsSource
#1Linan Li (TJU: Tianjin University)H-Index: 7
#2Rong-Jian Li (TJU: Tianjin University)H-Index: 1
Last. Chuanwei Li (TJU: Tianjin University)H-Index: 5
view all 6 authors...
Abstract In this study, the internal stress distribution of a film on substrate structure (FOSS) under tensile loads has been analyzed. Based on force balance principles, analytical solutions are deduced to solve the elastic problem for the FOSS considering the mismatch of mechanical parameters between the film layer and the substrate. The stress distributions of both monolayer FOSS and multilayer FOSS are determined. The effect of the influencing factors such as mechanical parameters and struct...
6 CitationsSource
#1Wei He (TJU: Tianjin University)H-Index: 3
#2Meidong Han (TJU: Tianjin University)H-Index: 2
Last. Xiuli Xue (Hunan University of Science and Technology)H-Index: 1
view all 5 authors...
The mechanical properties of metallic thin films deposited on a substrate play a crucial role in the performance of micro/nano-electromechanical systems (MEMS/NEMS) and flexible electronics. This article reviews ongoing study on the mechanics of substrate-supported thin films, with emphasis on the experimental characterization techniques, such as the rule of mixture and X-ray tensile testing. In particular, the determination of interfacial adhesion energy, film deformation, elastic properties an...
6 CitationsSource
#1Yeting Xi (USTB: University of Science and Technology Beijing)H-Index: 6
#2Kewei Gao (USTB: University of Science and Technology Beijing)H-Index: 31
Last. Alex A. Volinsky (USF: University of South Florida)H-Index: 40
view all 7 authors...
Abstract Residual stress in thin films and coatings strongly affects their properties and behavior in service. Comprehensive understanding and precise measurements of residual stress are prerequisites for preparing high quality films and coatings. Residual stresses in TiN films with different thickness were measured by X-ray diffraction (XRD) employing the cos 2 α sin 2 ψ method with certain optimization. Grazing incidence parallel beam optics was combined with side-inclination geometry using in...
42 CitationsSource
This paper describes the accelerated ageing of commercially available silvered polymer film by contact cleaning using brushes and water in the presence of soiling created by dust and sand particles. These conditions represent cleaning regimes in real concentrating solar power (CSP) solar fields in arid environments, where contact cleaning using brushes and water is often required to clean the reflecting surfaces. Whilst suitable for glass reflectors, this paper discusses the effects of these est...
14 CitationsSource
#1Ushasi Roy (Tata Steel)H-Index: 4
#2Chiradeep Ghosh (Tata Steel)H-Index: 15
The galvannealing process results in thermal residual stress in zinc–iron alloy coating on steel substrate due to differential thermal behaviour of the coating and the substrate. The magnitude of biaxial tensile residual stress generated just after cooling has been estimated theoretically and the value is found to be high enough to cause through-thickness cracks in the coating. Energy model has been adopted to determine the distribution of cracks and crack spacing in the galvannealed (GA) coatin...
6 CitationsSource
#1Jin-na Liu (HEU: Harbin Engineering University)H-Index: 7
#2B-S. XuH-Index: 3
Last. Guo Jin (HEU: Harbin Engineering University)H-Index: 16
view all 6 authors...
The accurate measurement of stress is an essential requirement of residual stress studying. In this paper, Cu thin films with different thickness were prepared by magnetron sputtering. The micromorphologies of the films were observed using atomic force microscopy, and the microstructures were analysed by transmission electron microscopy and X-ray diffraction. The residual stress distributions of the films were measured by the curvature and nanoindentation methods. The results show that Cu films ...
10 CitationsSource
#1Alireza Moridi (UNSW: University of New South Wales)H-Index: 5
#2Haihui Ruan (UNSW: University of New South Wales)H-Index: 19
Last. Mei Liu (UNSW: University of New South Wales)H-Index: 8
view all 4 authors...
This paper explores the mechanisms of the residual stress generation in thin film systems with large lattice mismatch strain, aiming to underpin the key mechanism for the observed variation of residual stress with the film thickness. Thermal mismatch, lattice mismatch and interface misfit dislocations caused by the disparity of the material layers were investigated in detail. The study revealed that the thicknessdependence of the residual stresses found in experiments cannot be elucidated by the...
59 CitationsSource
#1Huiming Yin (Columbia University)H-Index: 21
#2Pablo A. Prieto-Muñoz (Columbia University)H-Index: 5
Abstract Plane strain elastic theory of stress transfer in multi-layered materials is formulated and is used to investigate the stress distribution of a coating system under a tensile load. When the substrate layer is subjected to a uniaxial load, the load is transferred to the coating through interfacial shearing stress. With the aid of a plane assumption, decoupled governing equations are obtained, and the general solution of the displacement field can be derived for both the coating and the s...
15 CitationsSource
#1Nicola Rossini (DCU: Dublin City University)H-Index: 2
#2Michele Dassisti (IPN: Instituto Politécnico Nacional)H-Index: 16
Last. Abdul Ghani Olabi (DCU: Dublin City University)H-Index: 72
view all 4 authors...
Abstract Residual stresses occur in many manufactured structures and components. Large number of investigations have been carried out to study this phenomenon and its effect on the mechanical characteristics of these components. Over the years, different methods have been developed to measure residual stress for different types of components in order to obtain reliable assessment. The various specific methods have evolved over several decades and their practical applications have greatly benefit...
499 CitationsSource
Cited By0