Particle erosion of ductile metals: A mechanism of material removal

Hutchings, IM; Winter, R. E.

doi:10.1016/0043-1648(74)90091-x

Cited by 259 publications

(100 citation statements)

References 4 publications

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“…Microscopic examination of the subsurface deformation around indentations formed by impact at velocities typical of erosion (25)(26)(27) as well as analyses of the quasi-static indentation process (24,28,29) indicate that the volume of metal which is plastically deformed around an indentation is comparable with the volume of the indentation. Bear in mind that a will probably depend on the indentation geometry, the impact velocity and the target material.…”

Section: B Calculation Of Ion Ratementioning

confidence: 99%

A model for the erosion of metals by spherical particles at normal incidence

Hutchings

1981

Wear

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379

136

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A theoretical analysis is presented for the erosion of metals by spheres at normal incidence. The model employs a criterion of critical plastic strain to determine when material will be removed, and predicts velocity exponents of 3 for erosion and -2 for the mass of spherical particles which must hit the surface before material is removed. The mechanical properties of the metal are described by two quantities: its dynamic hardness and its ductility under erosion conditions. Data obtained in experiments with aluminium alloys as well as previously published data are compared with the theory.

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Section: B Calculation Of Ion Ratementioning

confidence: 99%

A model for the erosion of metals by spherical particles at normal incidence

Hutchings

1981

Wear

Self Cite

379

136

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“…The surface of the NS coating is smoother than the surface of the AR coatings. Beyond the effect of the higher microhardness of the NS coatings on its erosion resistance, its more regular and smoother surface [6] is also thought to have a beneficial influence on its resistance to erosion, at room and at higher temperatures, particularly when the micromachining mechanism [71][72][73][74] is operative.…”

Section: The Erosion-oxidation Behavior Of the Coatingsmentioning

confidence: 99%

High Temperature Erosion-oxidation Resistance of Thermally Sprayed Nanostructured Cr3C2-25(Ni-20Cr) Coatings

et al. 2017

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This study reports the high temperature erosion-oxidation (E-O) behavior of conventional and nanostructured Cr 3 C 2 -25(Ni-20Cr) coatings prepared by high velocity oxygen fuel (HVOF) spraying. As-received and nanostructured Cr 3 C 2 -25(Ni-20Cr) powders with mean crystallite sizes of 145 nm and 50 nm respectively, were used to prepare 120 -200 μm thick coatings on AISI 310 samples. The E-O behavior of the coatings prepared with the as-received (AR) and nanostructured (NS) powders was determined as weight change in a custom designed rig at room temperature, 450, 700 and 800 ºC. The Vickers microhardness, Young's Modulus and fracture toughness of the AR and NS coatings were determined, and the NS coatings exhibited higher values compared with the AR coatings. The E-O resistance of the NS coating was higher than that of AR coating at all temperatures, and particularly at 800 ºC. The increase in E-O resistance of the NS coatings is due to its superior mechanical properties as well as to the presence of some heterogeneities in the AR coatings. The E-O mechanisms of both types of the coatings are discussed, with special attention to that at high temperatures. The results suggest that at 800 ºC the E-O process is controlled by erosion of the oxide.

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“…Different material removal mechanisms have been proposed and investigated by various investigators. Finnie [1] reported that the material removal mechanism of ductile material is by plastic deformation and fracture; Bitter [2] reported that the deformation wear causes crack and spalling of the workpiece causes the material removal; Tilly [3] reported that the material is extruded to form a lip and the lip is detached by fragmented particles; Hutchings and Winter [4] reported that the lip detachment is by rupture, and Bellman and Levy [5] reported that the platelet mechanism causes the material removal on ductile materials. Similarly, for brittle materials, Finnie [6] and many other investigators reported that the intersection of cracks originating from the point of impact causes the material removal.…”

Section: Introductionmentioning

confidence: 99%