Investigation of the Wear Products of Austenitic Manganese Cast Irons

Balyts’kyi, O. I.; Kolesnikov, V. O.

doi:10.1023/b:masc.0000042788.19429.a1

Cited by 8 publications

(3 citation statements)

References 1 publication

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“…Elevated temperature produced considerable surface decarburization and loss of manganese leading to the formation of martensite. The martensite layer is hard and brittle, which allows the loss of material during the abrasive wear process, which results in lower wear resistance compared to the as-cast state material that presents a plastic deformation process allowing the deformation hardening process and therefore a significant increase in its wear resistance [1,7,8,9]. In addition, there is a greater oversaturation of austenitic phase in elements such as carbon, chromium and in 30% brine-cooled material manganese due to the greater severity of hardening causing an increase in hardness which is consistent with the results obtained.…”

Section: Methodsmentioning

confidence: 99%

Cooling kinetics effect on abrasive wear behaviour of an ASTM A128 steel

Cobos¹,

Arias²,

Romero³

2018

ces

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In this work, quench severity effect on abrasive wear resistance on austenitic steel ASTM A128 Grade C samples, were studied. Initial and heat-treated samples were characterized by optical emission spectroscopy (OES), X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS) to determinate present phases, microstructural changes and evaluate their influence on abrasive wear resistance. In addition, wear resistance tests were made according to ASTM G65-00 to determinate abrasive wear resistance and the possible strain hardening produced by the contact of the sample with the abrasive agent.

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Section: Methodsmentioning

confidence: 99%

Cooling kinetics effect on abrasive wear behaviour of an ASTM A128 steel

Cobos¹,

Arias²,

Romero³

2018

ces

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“…However, none of the works mention how to avoid sediment on the bottom of the engine cooling channel of "light" nanoparticles under the action of inertial and gravitational forces. The main questions addressed in the article are the following: factors influencing the thermal conductivity coefficient of nanofluids (including very high value in pure hydrogen or hydrogen containing); boiling of liquid in the cooling jacket of the engine cylinder head; behavior of nanoparticles and devices with nanoparticles in the engine cylinder head cooling system; the discussion of the results , taking into account degradation of modern structural materials under the hydrogen containing environment influence [2,24,32,[43][44][45][46][47][48][49][50][51]63,118,175,176].…”

Section: Literature Surveymentioning

confidence: 99%

Hydrogen Containing Nanofluids in the Spark Engine’s Cylinder Head Cooling System

et al. 2021

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The article is devoted to the following issues: boiling of fluid in the cooling jacket of the engine cylinder head; agents that influenced the thermal conductivity coefficient of nanofluids; behavior of nanoparticles and devices with nanoparticles in the engine’s cylinder head cooling system. The permissible temperature level of internal combustion engines is ensured by intensification of heat transfer in cooling systems due to the change of coolants with “light” and “heavy” nanoparticles. It was established that the introduction of “light” nanoparticles of aluminum oxide into the water in a mass concentration of 0.75% led to an increase in its thermal conductivity coefficient by 60% compared to the base fluid at a coolant temperature of 90 °C, which corresponds to the operating temperature of the engine cooling systems. At the indicated temperature, the base fluid has a thermal conductivity coefficient of 0.545 W/(m °С), for nanofluid with particles its value was 0.872 . At the same time, a positive change in the parameters of the nanofluid in the engine cooling system was noted: the average movement speed increased from 0.2 to 2.0 m/s; the average temperature is in the range of 60–90 °C; heat flux density 2 × 102–2 × 106 ; heat transfer coefficient 150–1000 . Growth of the thermal conductivity coefficient of the cooling nanofluid was achieved. This increase is determined by the change in the mass concentration of aluminum oxide nanoparticles in the base fluid. This will make it possible to create coolants with such thermophysical characteristics that are required to ensure intensive heat transfer in cooling systems of engines with various capacities.

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“…The required level of physical, mechanical and operational properties of modern heat-resistant nickel alloys is ensured by a rather complex alloying system [1][2][3][4][5][6][7][8]. Quite effective ways to improve the complex properties of existing alloys are known, such as modification and other technological methods for improving the structure and quality indicators of the material of finished products [9][10][11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

MODELING OF CARBIDE FORMATION IN ALLOY OF THE Ni-Cr-Co-W-Mo-Al-Ti-C SYSTEM

Glotka,

Byelikov,

Lysytsya

2024

Acta Metall Slovaca

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Theoretical modeling of thermodynamic processes of separation of carbide phases was carried out, as well as a practical study of the structure and distribution of chemical elements in carbides. Based on an integrated approach for the Ni-Cr-Co-W-Mo-Al-Ti-C system, new regression models were obtained that make it possible to predict the chemical composition of carbides based on the chemical composition of the alloy. A comparative assessment of the calculation results obtained using regression models and experimental data obtained by X-ray spectroscopy was carried out.

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Investigation of the Wear Products of Austenitic Manganese Cast Irons

Cited by 8 publications

References 1 publication

Cooling kinetics effect on abrasive wear behaviour of an ASTM A128 steel

Cooling kinetics effect on abrasive wear behaviour of an ASTM A128 steel

Hydrogen Containing Nanofluids in the Spark Engine’s Cylinder Head Cooling System

MODELING OF CARBIDE FORMATION IN ALLOY OF THE Ni-Cr-Co-W-Mo-Al-Ti-C SYSTEM

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