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Baglyuk, G. А.; Posnyak, Leonid A.

doi:10.1023/a:1011399504008

Cited by 14 publications

(1 citation statement)

References 12 publications

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“…Low-carbon steels on Fe-Mn-base have good machinability and in some cases have a higher level of strength properties than steel 110G13L, but, unlike it, do not have high wear resistance. However, such steels have been not enough studied, and in known papers [3,[5][6][7][8][9][10][11][12], the cast irons and complex alloyed low-carbon steels containing Mo, V, Ti and other elements have been investigated. The maximum manganese content did not exceed 10%.…”

Section: Introductionmentioning

confidence: 99%

Effect of Particular Combinations of Quenching, Tempering and Carburization on Abrasive Wear of Low-Carbon Manganese Steels with Metastable Austenite

Малинов

Malysheva

Klimov

et al. 2019

MSF

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The effect of quenching from 900°C (20 min exposure) and different tempering in the 250-650°C (for 1 hour) interval, as well as additionally preliminary carburization for 8 hours at 930°C, followed by a similar heat treatment on abrasive and shock-abrasive wear of low-carbon manganese (10-24%Mn) steels, phase composition and mechanical properties was studied. It was confirmed that an increase in the manganese reduces the abrasive wear resistance and increases the impact-abrasive wear resistance. The expediency of carburization of low-carbon manganese steels is shown in order to obtain the residual austenite in the structure which amount and stability must be optimized in relation to specific abrasive impact characterized by the dynamic ratio with taking into account the chemical composition.

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Section: Introductionmentioning

confidence: 99%

Effect of Particular Combinations of Quenching, Tempering and Carburization on Abrasive Wear of Low-Carbon Manganese Steels with Metastable Austenite

Малинов

Malysheva

Klimov

et al. 2019

MSF

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Ni-Ni3B composite coating

Azhazha

Semenenko

Pilipenko

2007

Powder Metall Met Ceram

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The paper compares the microstructure and tribotechnical characteristics of composite coatings of 70 wt.% Ni -20 wt.% Cr -5 wt.% Si -5 wt.% B. These coatings are produced by slip casting and unidirectional solidification. The coating composition is substantiated and coating restructuring mechanisms in the forming process are discussed. Natural composite Ni -Ni 3 B forms the basis of the coating. The fine lamellar eutectic, which occupies ~50.5% of the coating, consists of Ni 3 B, a nickel solid solution doped with chrome and silicon, and CrB crystals. The microhardness of the coating and phase constituents are determined. The method of contact eutectic vacuum melting with controlled cooling permits obtaining the nonporous coating without slag inclusions and with homogeneous oriented structure. The mechanism of 3 to 5 times increase in the wear resistance of homogeneous nonporous coatings and their potential application in friction units of machinery are discussed.Strong and stable protective coatings are needed to improve the wear-and heat-resistance of structural materials used in corrosive environments and at high temperatures [1-3]. The formation of composites consisting of a solid (with high creep strength) intermetallide and a more plastic metal phase is a prospective area for improving the properties of brittle materials and associated coatings. This approach can be implemented using eutectic reactions [4-6] between coating components: refractory oxides and borides of transition metals.Contact eutectic melting extends the structure-formation capability of the initial powder mixture: a considerable amount of the liquid phase at the final stage of coating formation results in the appropriate mobility of the molten layer, adhesion with the substrate, and a high speed of the process (10 2 -10 3 sec). However, high cooling rates substantially contribute to the porosity and cracking of coatings. Three-component and more complex eutectics are known to have lower melting temperatures than two-component ones. When the liquid phase appears, doping components in alloys (powder mixtures) may chemically react with base materials or with each other, often resulting in new phases with higher melting temperatures than those of the initial components. Of particular interest is an opportunity to produce antifriction and wear-resistant surface layers in this way [6,7]. The wear-and heat-resistance of heterogeneous and heterophase age-hardened or amorphous-crystalline coating materials can be increased through the structure formation processes (the literature on these processes [3,[8][9][10][11][12][13][14] needs to be carefully analyzed and summarized.)The objective is to examine the slip casting formation of the composite coating 70 wt.% Ni -20 wt.% Cr -5 wt.% Si -5 wt.% B, analyze the potential use of contact eutectic melting to obtain nonporous wear-resistant coatings, and study their effect on the tribotechnical characteristics of subsequent controlled thermal treatment.The reason for studying this system is high strength...

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Dissolution of chromium carbide Cr3C2 in Kh17N2 steel during sintering

Yakovenko

Maslyuk

Gripachevskii

et al. 2011

Powder Metall Met Ceram

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The effect of sintering temperature (900-1300°C) on the interaction of Cr 3 C 2 with a Kh17N2 steel matrix is studied. It is shown that complex iron-chromium carbide of (Cr, Fe) x C y type forms during sintering. With increasing temperature, it undergoes a number of phase transformations. The following mechanism of Cr 3 C 2 dissolution in the steel matrix is established:The effectiveness of chromium carbide Cr 3 C 2 as a doping agent in producing wear-and corrosion-resistant materials was previously verified in [1][2][3]. Powder composites containing Cr 3 C 2 can be used to make tools and machine parts designed to perform in conditions of abrasive wear and in hostile environments and to deposit protective coatings on parts and mechanisms. The steel component of such materials and the proximity of linear expansion coefficients of the coating and the part promote strong and unstressed adhesion between them.The performance properties of the alloys in question are largely determined by the nature of interaction between carbides of the solid phase and the steel matrix during sintering. As a rule, this interaction leads to complex redistribution of elements between carbides and the matrix. To control the interaction of chromium carbide with the steel matrix, clear understanding of the nature and mechanism of this process is needed to limit the impact of temperature and time factors to the maximum extent.The published data on the interaction of chromium carbide with a metal matrix are incomplete [4][5][6] or mainly focus on the interaction of Cr 3 C 2 with an iron matrix [7]. The studies by Napara-Volgina and colleagues deal only with composites based on Kh18N15 austenitic steel with Cr 3 C 2 and MoS 2 additives. These data do not reflect quantitative changes in chemical composition of the carbide phase at different sintering temperatures.Our objective is to examine the variation in phase and chemical composition of chromium carbide particles in contact with a Kh17N2 chromium steel matrix and to establish the mechanism of their dissolution during heating.

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Cited by 14 publications

References 12 publications

Effect of Particular Combinations of Quenching, Tempering and Carburization on Abrasive Wear of Low-Carbon Manganese Steels with Metastable Austenite

Effect of Particular Combinations of Quenching, Tempering and Carburization on Abrasive Wear of Low-Carbon Manganese Steels with Metastable Austenite

Ni-Ni3B composite coating

Dissolution of chromium carbide Cr3C2 in Kh17N2 steel during sintering

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