Two-body abrasion resistance of high-carbon high-silicon steel: Metastable austenite vs nanostructured bainite

Ефременко, В. Г.; Hesse, Olaf; Friedrich, Thomas; Kunert, M.; Брыков, М. Н.; Shimizu, Kazumichi; Zurnadzhy, V. І.; Suchmann, P.

doi:10.1016/j.wear.2018.11.003

Cited by 56 publications

(47 citation statements)

References 41 publications

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“…Широко используются методы нанесения защитных слоёв и наплавка [1-3], а также объёмная термическая обработка [4-6]. В работах [7,8] предложен новый класс материалов, износостойких при абразивном изнашивании, -высокоуглеродистые низколегированные стали. Благодаря высокой концентрации углерода (около 1,2 %) и суммарному содержанию легирующих элементов на уровне 3 % после закалки из однофазной г-области температура начала мартенситного превращения М н снижается до уровня 20 °С.…”

Section: анализ публикаций по теме работыunclassified

“…Благодаря высокой концентрации углерода (около 1,2 %) и суммарному содержанию легирующих элементов на уровне 3 % после закалки из однофазной г-области температура начала мартенситного превращения М н снижается до уровня 20 °С. Поэтому количество остаточного аустенита после закалки достигает 90-100 % [8]. Благодаря высокой способности остаточного аустенита к фазовому превращению при механическом воздействии -например, при царапании абразивом в процессе изнашивания -на поверхности трения постоянно образуется твердый слой мартенсита деформации [8], что и способствует значительному повышению износостойкости.…”

Section: анализ публикаций по теме работыunclassified

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Structure of near-weld zone of quenched high-carbon steel after welding with rapid cooling

Kalinin¹,

Shumilov²,

Petryshynets³

et al. 2019

Innovative Materials and Technologies in Metallurgy and Mechanical Engineering

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д-р техн. наук Ефременко В. Г. 4 , д-р техн. наук Брыков М. Н. 2 1 ПАО «Запорожтрансформатор», г. Запорожье 2 Национальный университет «Запорізька політехніка», г. Запорожье 3 Институт материаловедения, г. Кошице, Словакия 4 ГВУЗ «Приазовский государственный технический университет», г. Мариуполь Research methods. Optical and scanning electron microscopy was used to study microstructures. The hardness of the samples was measured using Vickers hardness tester equipped with a computer-controlled positioning and indentation of the sample, as well as determining the diagonals of the prints. Results. Plates of martensite-hardened high-carbon low-alloyed steel and low-carbon steel immersed in water (except edges to be welded) are welded by manual arc welding. The microstructure of the welded joint was investigated. The sizes of characteristic areas of heat-affected zones and the hardness of the material at various distances from the fusion boundary were determined. Scientific novelty. For the first time, high-carbon steel quenched to martensite without tempering was welded with simultaneous accelerated cooling in water. It has been established that in the structure of the heat-affected zone a solid martensitic layer is not adjacent to the fusion boundary, but is separated from it by a layer of austenite. Practical value. The principal possibility of welding heat-treated high-carbon wear-resistant steels without deterioration the structure obtained by preliminary heat treatment is shown.

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Section: анализ публикаций по теме работыunclassified

Structure of near-weld zone of quenched high-carbon steel after welding with rapid cooling

Kalinin¹,

Shumilov²,

Petryshynets³

et al. 2019

Innovative Materials and Technologies in Metallurgy and Mechanical Engineering

View full text Add to dashboard Cite

show abstract

“…Recently new class of wear resistant materials for abrasive wear environment is proposed. That is high-carbon lowalloyed steels [17][18][19]. Due to high carbon concentration (1.2%) and about 3% of alloying elements it is possible to reduce martensite start temperature Ms as low as to 10-30 o C when quenching from single-phase γ-domain.…”

Section: Introductionmentioning

confidence: 99%

“…Due to high carbon concentration (1.2%) and about 3% of alloying elements it is possible to reduce martensite start temperature Ms as low as to 10-30 o C when quenching from single-phase γ-domain. Therefore the amount of retained austenite after quenching these steels in water at room temperature achieves 90-100% [19]. Because of high DOI sensitivity of that austenite to phase transformation under mechanical impactfor example scratching during abrasive wearthin hard layer (up to 11 GPa depending on abrasive conditions) of mechanically induced martensite is instantly forming on worn surface enabling higher abrasive wear resistance of steel [19].…”

Section: Introductionmentioning

confidence: 99%

“…Therefore the amount of retained austenite after quenching these steels in water at room temperature achieves 90-100% [19]. Because of high DOI sensitivity of that austenite to phase transformation under mechanical impactfor example scratching during abrasive wearthin hard layer (up to 11 GPa depending on abrasive conditions) of mechanically induced martensite is instantly forming on worn surface enabling higher abrasive wear resistance of steel [19]. High carbon content is beneficial for wear resistance of steel but simultaneously worsens its weldability.…”

Section: Introductionmentioning

confidence: 99%

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Structure of High-Carbon Steel After Welding With Rapid Cooling

Kalinin¹,

Брыков

Petryshynets

et al. 2019

Acta Metall Slovaca

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<p class="AMSmaintext1">In this paper the effect of rapid cooling during arc welding on the structure of fusion layer and heat affected zone (HAZ) of high-carbon low alloyed steel have been studied. The main idea was that despite of high carbon content (1.2%) it is necessary to achieve quenching in HAZ. Due to proper chemical composition of welded steel martensite start temperature Ms is about 20 <sup>o</sup>C, therefore austenitic structure of quenched metal is preserved after rapid cooling. Exposition of HAZ to excessive heat during welding cycle leads to local precipitation of carbides from austenite and thus raising of Ms. In this case some amount of martensite was present in structure after cooling along with austenite and carbides. Microstructure, microhardness and chemical composition of remelted electrode metal, fusion zone and HAZ were studied by means of optical microscopy, SEM, EDX and microhardness testing.</p>

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Effect of Deep Cryogenic Treatment on the Microstructure and Wear Resistance of a Novel Nanobainite Steel

Fan

Hai

Zhang

2021

steel research int.

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A novel nanobainitic (NB) steel is treated by three different heat treatment routes: quenching-tempering (QT), quenching-austempering-tempering (AT), and quenching-austempering-deep cryogenic treatment-tempering (ACT). To investigate the effects of retained austenite (RA) with different morphologies, stabilities, and volume fractions on the wear resistance of NB steel, the microstructure is observed by optical microscopy (OM), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The volume fraction and stability of RA are determined by quantitative X-ray diffraction (XRD) analysis. It is found that deep cryogenic treatment (DCT) after low-temperature austempering can effectively eliminate the blocky RA, increase the stability of filmy RA and have no effect on the NB microstructure. The AT and ACT treatments have higher surface residual compressive stress and better wear resistance than conventional QT treatments. For the ACT treatment, a multiphase microstructure composed of NB, martensite, and filmy RA is obtained near the surface, and the wear resistance of the steel is optimized, with increases of 23%, 52%, and 93% for austempering times of 8, 12, and 24 h, respectively. The results show that DCT can be combined with low-temperature austempering treatment, thereby effectively eliminating unstable blocky RA, avoiding the transformation of brittle martensite, and obtaining improved wear resistance.

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Two-body abrasion resistance of high-carbon high-silicon steel: Metastable austenite vs nanostructured bainite

Cited by 56 publications

References 41 publications

Structure of near-weld zone of quenched high-carbon steel after welding with rapid cooling

Structure of near-weld zone of quenched high-carbon steel after welding with rapid cooling

Structure of High-Carbon Steel After Welding With Rapid Cooling

Effect of Deep Cryogenic Treatment on the Microstructure and Wear Resistance of a Novel Nanobainite Steel

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