Instrumented indentation study of materials edge chipping

Закиев, И. М.; Storchak, Michael; Gogotsi, G. A.; Закиев, В. И.; Kokoieva, Yu. V.

doi:10.1016/j.ceramint.2021.07.133

Cited by 14 publications

(4 citation statements)

References 42 publications

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“…Indentation tests were carried out using multifunctional indentation tester “Micron-gamma” of the National Aviation University (Kyiv, Ukraine) [ 131 , 132 ]. Indentation curve recorded during Berkovich diamond tip penetration into the samples of metal alloy 110Cr4Cu6Si1MnBTi allows to determine the indentation hardness and modulus, the resistance to plastic deformation and other mechanical parameters.…”

Section: Methodsmentioning

confidence: 99%

Prediction of phase composition and mechanical properties Fe–Cr–C–B–Ti–Cu hardfacing alloys: Modeling and experimental Validations

Lozynskyi,

Trembach,

Hossain

et al. 2024

Heliyon

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Section: Methodsmentioning

confidence: 99%

Prediction of phase composition and mechanical properties Fe–Cr–C–B–Ti–Cu hardfacing alloys: Modeling and experimental Validations

Lozynskyi,

Trembach,

Hossain

et al. 2024

Heliyon

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“…After compression testing to a certain predetermined strain value, the microhardness of the deformed specimens was measured. The microhardness measurement of specimens subjected to compression test was carried out by the method of instrumental nanoindentation [47] using the "Micron-g" device (Micron Company, Kyiv, Ukraine) [48]. Figure 2 shows the results of the compression test of gray cast iron EN-GJL-200 specimens and their microhardness measurements.…”

Section: Methodsmentioning

confidence: 99%

Plasticity Resource of Cast Iron at Deforming Broaching

Nemyrovskyi

Shepelenko

Storchak

2023

Metals

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The contact interaction mechanics of deformation broaching in low-plasticity materials is studied. Particular attention is paid to the study of the stress–strain state parameters and the plasticity margin in the deformation zone during the machining of gray cast iron EN-GJL-200. The stress–strain state was analyzed using a finite-element model of the deforming broaching process for each area of the deformation zone. The model parameters of the machined material were determined experimentally by compressing specimens of gray cast iron EN-GJL-200. The changes in the parameters of accumulated strain, stress tensor components, stress triaxiality ratio, hydrostatic stress, and plasticity margin at different deformation zones along the machined specimen depth are analyzed. It is shown that there is a zone of local plastic deformation in conditions of critical contact stresses. This leads to the appearance of tensile stresses that reduce the plasticity margin in the surface layer. The impact of tool geometry on the stress–strain state of the surface layer is also discussed, and recommendations for the optimal working angle of the deforming element are provided based on plasticity margin minimization.

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“…To study the scratch resistance and adhesion strength of Ni/Cu/Cr thin films with substrate, a series of scratch tests were performed using the multifunctional indentation tester 'Micron-gamma' [37]. The indentation tester is equipped with a built-in optical microscope, which allow precisely select surface area for investigation and get images of formed scratches immediately after test.…”

Section: Methods and Objectsmentioning

confidence: 99%

Thermal and Ion Treatment Effect on Nanoscale Thin Films Scratch Resistance

Yanchuk¹,

Kruhlov²,

Закиев³

et al. 2022

Metallofiz. Noveishie Tekhnol.

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In this study, a microtribological characteristics of Ni(25 nm)/Cu(25 nm)/ Cr(25 nm) three-layer thin films fabricated using DC magnetron sputtering are explored using progressive scratch test. Four various types of thin films are examined and compared: as-deposited film, film after low-energy Ar + ion irradiation, film annealed at 450°С for 15 minutes in vacuum, and film after ion irradiation followed by vacuum annealing. Scratch tests are supplemented by structural (XRD) and chemical (AES) experimental studies. As figured out, the sample after ion irradiation followed by annealing demonstrated the best microtribological and wear resistance characteristics among all studied films. The highest scratch resistance, smooth scratch shape, the lowest value of peak tangential force as well as the absence of side cracks and film delamination are revealed for the sample after irradiation followed by annealing. The likely reasons of this behaviour are discussed.

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Instrumented indentation study of materials edge chipping

Cited by 14 publications

References 42 publications

Prediction of phase composition and mechanical properties Fe–Cr–C–B–Ti–Cu hardfacing alloys: Modeling and experimental Validations

Prediction of phase composition and mechanical properties Fe–Cr–C–B–Ti–Cu hardfacing alloys: Modeling and experimental Validations

Plasticity Resource of Cast Iron at Deforming Broaching

Thermal and Ion Treatment Effect on Nanoscale Thin Films Scratch Resistance

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