Young's modulus measurement and study of the relationship between mechanical properties and microstructure of air plasma sprayed alloy 625

Azarmi, Fardad; Coyle, Thomas W.; Mostaghimi, J.

doi:10.1016/j.surfcoat.2008.09.035

Cited by 40 publications

(17 citation statements)

References 20 publications

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“…Considerable experimental and theoretical study on the influence of porosity and cracks (both inter-splat and vertical cracks) on the elastic modulus of air plasma spray coatings has been carried out (Ref [28][29][30][31][32]. The effect of the pores and cracks on electrical conductivity of air plasma spray coatings, in contrast, has been less well studied (Ref [33][34][35].…”

Section: Influence Of Porosity and Cracks On Elastic Modulus And Elecmentioning

confidence: 99%

Evaluation of Parameters for Assessment of Inter-Splat Bond Strength in Cold-Sprayed Coatings

et al. 2010

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The quality and performance of cold spray coatings are largely determined by the extent and strength of bonding between the adjacent splats. Usually, the extent of inter-splat bonding is only qualitatively estimated by examining the polished and etched sectioned surfaces of the coated sample. Thus, there is a clear need for indirect techniques to quantitatively estimate the extent of inter-splat bonding so that they can serve as quality control tools. In this study, elastic modulus, electrical conductivity, and critical load for inter-splat debonding as determined using a scratch test are considered as possible parameters for the estimation of the extent of inter-splat bonding using four different cold spray coatings (Ag, Cu, 316 Stainless Steel, and Zn) as model coatings. It is demonstrated that all the three parameters are capable of quantifying the extent of inter-splat bonding.

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Section: Influence Of Porosity and Cracks On Elastic Modulus And Elecmentioning

confidence: 99%

Evaluation of Parameters for Assessment of Inter-Splat Bond Strength in Cold-Sprayed Coatings

et al. 2010

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“…The mechanical behavior was considered as isotropic although thermally-sprayed materials show an orthotropic behavior due to the spraying direction [20,25].…”

Section: Thermomechanical Calculationsmentioning

confidence: 99%

Laser-induced damage in cold-sprayed composite coatings

Rolland¹,

Sallamand²,

Guipont³

et al. 2011

Surface and Coatings Technology

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“…This analysis technique has been employed to numerically simulate mechanical and thermo-physical properties of coatings and composite materials in recent years [2]. OOF can be used to determine various properties of a structure, and it is important to know what it is that is desired [3].…”

Section: Introductionmentioning

confidence: 99%

Porosity comparative analysis of porous copper and OOF modelling

2015

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An understanding of the overall porous copper behavior is developed through the combination of real data from microstructures and the fundamental material characteristics of the constitutive phases. Captured morphological images, using the Nano-CT are utilized to generate the geometric information. Object-oriented finite element (OOF) analysis is quite a novel numerical approach to incorporate morphological images, acquired from scanning electron microscopy into 2-D finite element modeling. This paper seeks to investigate the porosities using two methods (Archimedes principle and Nano-CT) and then to introduce an image-based extended OOF modeling technique based on mapping the real microstructures of porous copper and gage its ability to predict the elastic moduli and evaluate the deformation mechanism resulting from the porous copper. Dissolution sintering technique was used by mixing Cu powders with NaCl in the volume ratio of 1:1 and 1:3 adding polyvinyl alcohol solution as a binder with NaCl as the space holder. The green form was pressed at 375 MPa using a four-column hydraulic lab press. The NaCl was leached out in hot water at 70°C and then sintered to a temperature of 850°C. Porosity values were determined from density measurements to give the porosity values of 42.2 and 45.71 % for volume ratio of 1:1 and 1:3, respectively. The material properties were obtained from the tests and compared to previous literature. Very good agreement has been shown, establishing the viability of this kind of morphology-based numerical approach.

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Young's modulus measurement and study of the relationship between mechanical properties and microstructure of air plasma sprayed alloy 625

Cited by 40 publications

References 20 publications

Evaluation of Parameters for Assessment of Inter-Splat Bond Strength in Cold-Sprayed Coatings

Evaluation of Parameters for Assessment of Inter-Splat Bond Strength in Cold-Sprayed Coatings

Laser-induced damage in cold-sprayed composite coatings

Porosity comparative analysis of porous copper and OOF modelling

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