Optimization of composition of as-cast chromium white cast iron based on wear-resistant performance

An, Wei; Cai, A.H.; Luo, Yang; Chen, Hua; Wei-xiang, Liu; Li, Tie-lin; Chen, Min

doi:10.1016/j.matdes.2008.11.003

Cited by 19 publications

(4 citation statements)

References 15 publications

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“…High-chromium cast iron (HCCI), as excellent wear-resistant material, has been widely used for hot rolling working roller since the end of the last century [1][2][3][4]. The exceptional wear resistance of HCCIs is attributed primarily to the high volume fraction of hard eutectic chromium carbides [5,6]. The high volume fraction of hard and consecutive eutectic chromium carbides results in a fatal defect of low impact toughness [7].…”

Section: Introductionmentioning

confidence: 99%

Effects of Heat-Treatment on the Microstructure and Wear Resistance of a High-Chromium Cast Iron for Rolls

Guo

Xiao

et al. 2016

Advances in Materials Science and Engineering

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The variations of microstructure and mechanical properties of a high-chromium cast iron for rolls were studied from as-cast to the final heat treatments. Results show that the as-cast microstructure of the HCCI consists of M7C3carbide, M23C6carbide, martensite matrix, and retained austenite. The large dendritic M7C3carbide surrounds the matrix, and the M23C6carbide is mainly distributed in the matrix. Part of M23C6carbide transforms to M7C3carbide and is dissolved in austenite during austenization at 1020°C. Thus, the amount of M23C6carbide decreases, whereas that of M7C3carbide increases after quenching; the highest hardness is also obtained. After tempering, the martensite transforms to a tempered martensite, and some carbide precipitates in the martensite matrix. The hardness also changes from HRC62.1, which corresponds to quenching, to HRC55.2 and HRC56.3, which correspond to once and twice tempering, respectively. However, tempering could improve the impact toughness and wear resistance of the HCCI.

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Section: Introductionmentioning

confidence: 99%

Effects of Heat-Treatment on the Microstructure and Wear Resistance of a High-Chromium Cast Iron for Rolls

Guo

Xiao

et al. 2016

Advances in Materials Science and Engineering

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“…При этом для решения задачи синтеза выявлено три основных подхода: параметрическая классификация [8,9], использование традиционных методов планирования эксперимента и регрессионного анализа на основе методов нечеткой математики [10,11]. При этом исследования самого материала выполняется с привлечением знаний металловедческого характера с целью выявления механизмов формирования износостойкости [12,13]. Отдельно вопросы, связанные с управлением качества формовочных смесей с указанием на важность области их применения, описаны в работах [14][15][16], причем акцент в них сделан именно на вопросы математического моделирования на основе методов планирования эксперимента с целью выбора таких составов смесей, которые обеспечивают получение заданного комплекса свойств.…”

Section: анализ литературных данныхunclassified

Research of opportunities for adaptation of computer-integrated mixture preparation systems to conditions of foundries in Ukrainian enterprises producing wear-resistant cast iron

Дымко¹,

Высоцкий²,

Красноухова³

et al. 2016

TAPR

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“…The volume fraction of carbides, their type, morphology, orientation, and the properties of the matrix are the vital factors to control the wear resistance of HCCI [3][4][5][6][7][8]. As such, the wear resistance of the alloy can be significantly improved by adding alloying elements (like W, B, Mo, Ti), but the numerous inevitable chrysanthemum-like carbides with sharp edges in normal cast HCCI always become the pores and stress concentration raisers, which deteriorates its toughness [9,10]. Presently, a hypoeutectic high chromium cast iron is prepared by P/M process with pre-alloyed powders [11].…”

Section: Introductionmentioning

confidence: 99%

Fixed and Variable Temperature Super-Solidus Liquid Phase Sintering of High Chromium Cast Iron with 25 Wt.%CR and Its Microstructure

Xiao

et al. 2021

Metals

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A variable temperature super-solidus liquid phase sintering (SLPS) technique is employed in fabrication of high chromium cast iron (HCCI) with 25wt.%Cr to extend its sintering temperature window. Its microstructure evolution, mechanical properties, and abrasive wear behavior are investigated systemically. The results indicate that the variable temperature SLPS can obtain samples with full density plus fine and uniformly distributed carbide particles, and its carbide volume fraction is increased by 4~5% in comparison with the fixed temperature SLPSed one. Meanwhile, its bending strength and impact toughness can be raised by 8.0% and 16.7%, respectively. Finally, the sintering temperature window for variable temperature SLPS of HCCI is extended by 12 °C, reaching 27 °C.

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Optimization of composition of as-cast chromium white cast iron based on wear-resistant performance

Cited by 19 publications

References 15 publications

Effects of Heat-Treatment on the Microstructure and Wear Resistance of a High-Chromium Cast Iron for Rolls

Effects of Heat-Treatment on the Microstructure and Wear Resistance of a High-Chromium Cast Iron for Rolls

Research of opportunities for adaptation of computer-integrated mixture preparation systems to conditions of foundries in Ukrainian enterprises producing wear-resistant cast iron

Fixed and Variable Temperature Super-Solidus Liquid Phase Sintering of High Chromium Cast Iron with 25 Wt.%CR and Its Microstructure

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