Wear in hard metal check valves: In-situ surface modification through tribolayer formation in dry contact

Blutmager, Andreas; Varga, M.; Cihak-Bayr, Ulrike; Friesenbichler, Walter; Mayrhofer, P.H.

doi:10.1016/j.vacuum.2021.110482

Cited by 10 publications

(3 citation statements)

References 33 publications

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“…7d-f) under 5 N. The highest wear of the AsRec-EN24 tested dry under 5 N (Figure 7d) generates a significant amount of wear debris as the repeated sliding of the alumina ball compacts the wear debris to form tribolayers on its wear track as found in Figure 8a [8,33,36]. Since tribolayers are somewhat harder, the existence of tribolayers on the wear track of the AsRec-EN24 prevents its abrasive wear to some extent [37]. Such tribolayers are less apparently formed on the wear tracks of the ConHeatTreat-EN24 (Figure 8b) and DeepCryoTreat-EN24 (Figure 8c) due to the less generation of wear debris associated with their relatively lower wear (Figures 7e and f).…”

Section: Resultsmentioning

confidence: 93%

Effects of Deep Cryogenic Treatment on Friction and Wear of EN24 Steel Against Alumina Under Dry and Lubrication Conditions

Win Khun,

Liu,

Senthilkumar

et al. 2024

Tribol. Ind.

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As-received (AsRec) EN24 steel was treated with conventional heat treatment (ConHeatTreat) without tempering followed by deep cryogenic treatment (DeepCryoTreat) as a supplemental treatment to study its tribological behaviour against alumina without or with mineral oil (MO) under different normal loads of 1 N and 5 N. The ConHeatTreat of the AsRec-EN24 obtained an 218.5% improvement in its hardness as the supplemental DeepCryoTreat of the ConHeatTreat-EN24 resulted in a 11.7% further improvement in its hardness. As a result, the ConHeatTreat-EN24 had the 67.5% and 56.3% lower wear volumes for 1 N and 5 N under dry condition and the 53.6% lower wear volume for 5 N under MO lubrication condition compared to those of the AsRec-EN24, respectively. The DeepCryoTreat-EN24 had the 11.5% and 39.7% lower wear volumes for 1 N and 5 N under dry condition and the unmeasurable wear volume for 5 N under MO lubrication condition compared to those of the ConHeatTreat-EN24, respectively. It could be concluded that the supplemental DeepCryoTreat further improved the hardness and thereby the abrasive wear resistance of the ConHeatTreat-EN24 under both dry and lubrication conditions.

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Section: Resultsmentioning

confidence: 93%

Effects of Deep Cryogenic Treatment on Friction and Wear of EN24 Steel Against Alumina Under Dry and Lubrication Conditions

Win Khun,

Liu,

Senthilkumar

et al. 2024

Tribol. Ind.

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“…[21] Material parameters at speeds relevant to tribological wear processes are important for optimizing tribosystems. As many wear systems feature some kind of surface protection, e.g., thin films, hardfacings, or in-situ formed tribolayers [22], material parameters for such near-surface regions are necessary. In this work we will prepare a toolset to gain material parameters needed for numerical simulation at application relevant speeds and tribologically interesting materials or surface layers via instrumented high-speed scratch testing aided by mesh-free modelling.…”

Section: Introductionmentioning

confidence: 99%

Fundamental abrasive contact at high speeds: Scratch testing in experiment and simulation

Varga

Cervellón

Leroch

et al. 2023

Wear

Self Cite

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“…Currently, the modern machine-building industry faces a large number of challenges: the development of new materials or materials with improved properties; the introduction of new technologies; energy and resources saving through the production of economical and efficient materials for machines and manufacturing equipment; improvement of reliability and the service life of products, etc. In most cases, during the operation of machine parts and mechanisms, it is the surface layers of material that are subjected to the load, and that is why they attract the maximum attention of scientists [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Structure–Phase Transformations in the Modified Surface of Al-20%Si Alloy Subjected to Two-Stage Treatment

et al. 2022

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The paper describes the two-stage modification of the surface layer of hypereutectic Al-20%Si alloy that combines electroexplosive alloying by an Al-Y2O system with subsequent irradiation by pulsed electron beam. It is shown that irrespective of the modification mode, a multilayer structure is formed consisting of the following layers: a surface layer and an intermediate layer. The surface layer is a multiphase material, the thickness of which varies within 1 µm. The intermediate layer, the thickness of which varies within 40 µm, is made up of rapid solidification cells formed due to the rapid cooling of molten layer of Al-20%Si alloy. The cells are divided by thin interlayers mostly formed by silicon nanoparticles.

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Wear in hard metal check valves: In-situ surface modification through tribolayer formation in dry contact

Cited by 10 publications

References 33 publications

Effects of Deep Cryogenic Treatment on Friction and Wear of EN24 Steel Against Alumina Under Dry and Lubrication Conditions

Effects of Deep Cryogenic Treatment on Friction and Wear of EN24 Steel Against Alumina Under Dry and Lubrication Conditions

Fundamental abrasive contact at high speeds: Scratch testing in experiment and simulation

Structure–Phase Transformations in the Modified Surface of Al-20%Si Alloy Subjected to Two-Stage Treatment

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