Numerical evaluation of cohesive and adhesive failure modes during the indentation of coated systems with compliant substrates

Fukumasu, Newton Kiyoshi; Souza, R.M.

doi:10.1016/j.surfcoat.2014.07.093

Cited by 27 publications

(30 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Two-dimensional (2D) finite element modeling of the orthogonal cut of the metal matrix composites was conducted using the TRIBOCode digital tribology platform developed at the Surface Phenomena Laboratory (LFS-USP) [29,30]. The FEM model considered both homogeneous and heterogeneous microstructures, to evaluate the influence of the sulfides during machining.…”

Section: Fem-finite-element Modelingmentioning

confidence: 99%

Orthogonal cut of SPS-sintered composites with ferrous matrix and Fe Mo S particles: Numerical and experimental analysis

Souza

Ordoñez

Mezghani

et al. 2020

Tribology International

Self Cite

View full text Add to dashboard Cite

Metal-matrix composites with solid lubricant reinforcements may present a suitable alternative to improve the tribological behavior of sintered components. Besides the performance during the application, the presence of solid lubricants may also modify component manufacture, for example, during machining operations to achieve complex shapes not directly obtained from the sintering process. This work describes a numerical and experimental analysis on the orthogonal cut of metal-matrix composites composed of FeeMoeS particles embedded in an Astaloy 85 Mo (Höganäes AB) matrix. Specimens were prepared using the Spark-Plasma Sintering (SPS) technique, from mixtures containing powders of Astaloy 85 Mo steel and 2 wt% or 4 wt% of molybdenum disulfide (MoS 2). An unreinforced Astaloy 85 Mo specimen (without MoS 2) was also included in the analysis. Different microstructures were observed after SPS. The unreinforced specimen presented a ferrite-pearlite structure with a porosity level below 2% and the specimen sintered with 2 wt% of MoS 2 presented iron sulfide particles dispersed in the steel matrix. The structure of the specimen sintered with 4 wt % was more complex, with two distinct phases dispersed in the Astaloy 85 Mo matrix. Experimental orthogonal cuts were conducted on the three specimens using a shaper machine tool equipped with a tungsten carbide (WCeCo) cutting insert. Tests were recorded using a high-speed camera. The machined surfaces were later analyzed with an optical profilometer and in a scanning electron microscope (SEM) with energy-dispersive X-ray spectroscopy (EDS). The chips were also characterized. The cutting operation was simulated by two-dimensional (2D) finite-element analysis. The meshes were prepared based on the specimen microstructures and considering the properties of the individual phases. Results have indicated significant differences in the cutting process. Observation of the chip surfaces indicates plastic deformation on the unreinforced specimen, in opposition to more uniform scratches on the composite surfaces, especially that of the specimen sintered with 4 wt % of MoS 2 .

show abstract

Section: Fem-finite-element Modelingmentioning

confidence: 99%

Orthogonal cut of SPS-sintered composites with ferrous matrix and Fe Mo S particles: Numerical and experimental analysis

Souza

Ordoñez

Mezghani

et al. 2020

Tribology International

Self Cite

View full text Add to dashboard Cite

show abstract

“…Indentation-based stress, adhesion energy or other quantitative and semi-quantitative analysis models have been implemented for determining the adhesion and interfacial toughness of several thin coatings [15] [16], especially by using finite element modelling (FEM) [17][18] [19]. The models thus produced have been established in close relation to the loaded forces and detected indentation-induced crack geometry parameters, as reviewed by Chen [20].…”

Section: Micro-and Nano-indentation Testingmentioning

confidence: 99%

Advances in test and measurement of the interface adhesion and bond strengths in coating-substrate systems, emphasising blister and bulk techniques

et al. 2019

View full text Add to dashboard Cite

In this paper, recent advances in the minimum-destructive testing of the adhesion of coating-substrate systems are reviewed, focusing on key techniques such as micro-and nano-scale levels of indentation, scratching, laser-induced wave shock, as well as the blister and buckle approach. Along with adhesion failure tests, the latest and most extensive applications of the adhesion test methods in nano-, micro-and bulkcoating technology and the associated techniques to determine the minimum damage defects left on the coatings are discussed and their use reviewed.

show abstract

“…For all the advantages that the instrumented indentation test presents, from being a local quasi non-destructive test able to contribute in the case of complex geometries problems [25,26], to being applicable for different types of materials (treated steels [27], composite materials [8], polymers [28][29][30], glass [31,32] and coatings [33][34][35]), this test is gaining ground in many industrial applications.…”

Section: Introductionmentioning

confidence: 99%

Determining the stress level of monotonic plastically pre-hardened metal sheets using the spherical instrumented indentation technique

et al. 2019

View full text Add to dashboard Cite

In this paper, a methodology, for calculating the stress level of monotonic plastically pre-hardened materials, using the instrumented indentation technique (IIT) coupled to the inverse analysis technique (IAT) is presented. In this methodology, the Voce work-hardening law is always considered as the work hardening law of the studied material. This methodology has shown a very good efficiency in determining the stress levels and the plastic strains undergone by two pre-hardened pseudo-materials. That was encouraging for applying this methodology on real metal sheets. Three metal sheets were studied (DC01 and DP600 steels and aluminum alloy 2017). In the case of the as-received sheets, the identified laws show precise results for plastic strains between 3% and 6% which correspond approximately to the representative strain in the case of spherical indentation. Tensile samples were then pre-hardened by imposing a monotonic plastic strain. Three levels of plastic pre-strains were imposed. Concerning low pre-hardening levels, very satisfying results were obtained where this methodology showed a great efficiency in determining the stress level and the plastic pre-strain undergone by the pre-hardened sheet. For high pre-hardening levels, a small underestimation of the stress level and the plastic pre-strain was obtained. In this latter case, work is being carried out to improve the results by enriching the experimental data provided for the inverse analysis computations.

show abstract

Numerical evaluation of cohesive and adhesive failure modes during the indentation of coated systems with compliant substrates

Cited by 27 publications

References 32 publications

Orthogonal cut of SPS-sintered composites with ferrous matrix and Fe Mo S particles: Numerical and experimental analysis

Orthogonal cut of SPS-sintered composites with ferrous matrix and Fe Mo S particles: Numerical and experimental analysis

Advances in test and measurement of the interface adhesion and bond strengths in coating-substrate systems, emphasising blister and bulk techniques

Determining the stress level of monotonic plastically pre-hardened metal sheets using the spherical instrumented indentation technique

Contact Info

Product

Resources

About