A Study of the Influence of Phase Composition of Cutting Inserts Made of Diamond–Tungsten Carbide Nanocomposite on the Process of Finish Turning of Aluminum Alloys and Brass

Stakhniv, N. E.; Devin, L. N.; Bochechka, О. О.; Osadchii, A. A.; Nazarchuk, S. N.; Rychev, S. V.

doi:10.3103/s1063457618030073

Cited by 5 publications

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“…It should be noted that only the measurement of cutting force is necessary to measure the friction by this approach, while the procedure used e.g. by Stakhniv et al required both cutting and feed force measurement to compute the friction in the flank side 40 .…”

Section: Discussionmentioning

confidence: 99%

In-SEM micro-machining reveals the origins of the size effect in the cutting energy

Medina-Clavijo

Ortiz-de-Zarate

Sela

et al. 2021

Sci Rep

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High-precision metal cutting is increasingly relevant in advanced applications. Such precision normally requires a cutting feed in the micron or even sub-micron dimension scale, which raises questions about applicability of concepts developed in industrial scale machining. To address this challenge, we have developed a device to perform linear cutting with force measurement in the vacuum chamber of an electron microscope, which has been utilised to study the cutting process down to 200 nm of the feed and the tool tip radius. The machining experiments carried out in-operando in SEM have shown that the main classical deformation zones of metal cutting: primary, secondary and tertiary shear zones—were preserved even at sub-micron feeds. In-operando observations and subsequent structural analysis in FIB/SEM revealed a number of microstructural peculiarities, such as: a substantial increase of the cutting force related to the development of the primary shear zone; dependence of the ternary shear zone thickness on the underlaying grain crystal orientation. Measurement of the cutting forces at deep submicron feeds and cutting tool apex radii has been exploited to discriminate different sources for the size effect on the cutting energy (dependence of the energy on the feed and tool radius). It was observed that typical industrial values of feed and tool radius imposes a size effect determined primarily by geometrical factors, while in a sub-micrometre feed range the contribution of the strain hardening in the primary share zone becomes relevant.

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Section: Discussionmentioning

confidence: 99%