Mechanical properties and microstructure of directionally solidified Fe-4.25%C eutectic alloy

Trepczyńska-Łent, M.; Boroński, Dariusz; Maćkowiak, P.

doi:10.1016/j.msea.2021.141644

Cited by 9 publications

(9 citation statements)

References 16 publications

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“…Ye et al [12] studied the microstructure and corrosion wear properties of directionally solidified high-Cr iron. As reported earlier [2,3,[6][7][8][9][10][11][12], microstructural features in hypereutectic high-Cr irons play important roles in the properties of hypereutectic high-Cr irons. Not only hypereutectic high-Cr irons but also hypoeutectic high-Cr irons are widely applied to wear-resisting components [1].…”

Section: Introductionmentioning

confidence: 54%

“…As mentioned in a previous study [6], the casting variable in conventional casting is the pouring temperature during solidification, and the resulting microstructure is dependent upon many factors, such as alloy modification, semi-solid treatment, current pulse treatment, heat treatment, and inoculation [7][8][9][10][11]. Many studies to improve mechanical properties and corrosion resistance by the refinement of primary carbide of hypereutectic high-Cr white irons [7,8].…”

Section: Introductionmentioning

confidence: 98%

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Effects of Chemical Composition and Solidification Rate on the Solidification Behavior of High-Cr White Irons

Son,

Jung,

Choi

et al. 2024

Metals

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The effects of chemical composition and solidification rate on the solidification behavior of high-Cr white irons were investigated through directional solidification. Increasing the solidification rate in hypoeutectic alloys caused finer dendrite-arm spacing, as expected. The eutectic structure, which formed in the interdendritic region, was comprised of M7C3 and austenite; however, secondary dendrite arms of hypoeutectic alloys contained a few M7C3 particles that solidified prior to the eutectic structure. The transition from cellular to dendritic solidification occurred at a solidification rate between 50 µm/s and 100 µm/s in a near-eutectic alloy. In the near-eutectic alloy with cellular solidification, a directionally arrayed in-situ composite of M7C3/austenite formed within the cell. Speckle-like features appeared in the intercellular region due to M23C6 carbide precipitation during subsequent cooling after freezing. Like dendrite-arm spacing in hypoeutectic alloys, the inter-speckle spacing and the inter-fiber spacing became finer with an increasing solidification rate in the cellular solidification range.

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Section: Introductionmentioning

confidence: 54%

Section: Introductionmentioning

confidence: 98%

Effects of Chemical Composition and Solidification Rate on the Solidification Behavior of High-Cr White Irons

Son,

Jung,

Choi

et al. 2024

Metals

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“…[ 45–48 ] The traditional binary eutectic alloys combining nonmetallic elements have been widely reported and investigated, such as Al–Si, Fe–C, and so on. [ 49,50 ] However, designing of EHEAs containing nonmetallic elements still needs further exploration.…”

Section: Introductionmentioning

confidence: 99%

Designing Eutectic High‐Entropy Alloys Containing Nonmetallic Elements

Zhang

Amar

et al. 2022

Adv Eng Mater

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Eutectic high‐entropy alloys (EHEAs), as an important branch of high‐entropy alloys (HEAs), have become hotpots in the materials field due to the excellent combination of mechanical properties and casting liquidity. However, designing of EHEAs containing nonmetallic elements has been rarely reported. Herein, a new strategy to design EHEAs containing nonmetallic elements by introducing an idealized mode of A‐(M + N) and using computer‐aided thermodynamic calculations is proposed. Based on this strategy, four new EHEAs, namely, CoFeNi2–Ti0.48Si0.8, CoCrNi2–V0.86B0.43, CoCrFeNi2–V0.89B0.45Si0.15, and CoCrNi2–MoC0.6, are designed and prepared. The CoFeNi2–Ti0.48Si0.8 and CoCrNi2–MoC0.6 EHEAs are composed of face‐centered‐cubic (FCC) + M16Ti6Si7‐type silicide and FCC + M23C6 + M6C‐type carbide, respectively. The CoCrNi2‐V0.86B0.43 and CoCrFeNi2‐V0.89B0.45Si0.15 EHEAs exhibit the same eutectic microstructure as FCC + M3B2‐type boride. The synthesized EHEAs containing nonmetallic elements show excellent mechanical properties. The experimental result indicates that this strategy can provide a feasible and effective way to develop new EHEAs with nonmetallic elements.

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“…Eutectic points occur at particular compositions in materials where two or more solid phases have a single melting temperature. There has been considerable research on eutectic points in alloys in the past several decades, [1][2][3][4][5][6][7][8][9] including substantial ones on the applications of eutectic systems in various fields. [7,10] These studies have shown that the inclusion of eutectic structures can result in improved alloy properties, including lower corrosion rate, [11] higher strength, [10,[12][13][14] and plasticity.…”

Section: Introductionmentioning

confidence: 99%

“…[19] Moreover, alloys and metallic glasses have also been studied at a microscopic level to determine the influence of eutectic phases on mechanical behaviors through experiments as well as Scanning Electron Microscopy (SEM) and Energy Dispersive x-Ray Spectroscopy (EDS). [2,4,8,20] Because of the comprehensive properties of eutectic compositions, there have been many attempts to fabricate and manufacture materials with eutectic compositions. [21][22][23] Therefore, the determination of eutectic points becomes crucial for such purposes.…”

Section: Introductionmentioning

confidence: 99%

Identification of the Eutectic Points in the Multicomponent Systems with the High-Throughput CALPHAD Approach

Zhang

Wang

Zhong

2022

J. Phase Equilib. Diffus.

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Eutectic materials have long been an area of interest, and the identification of eutectic points is crucial in materials design to utilize their unique properties. In multicomponent systems, finding eutectic points can be challenging due to the complexity of the systems, and the traditional CALPHAD method lacks efficiency in such tasks. Therefore, a high-throughput CALPHAD method utilizing TC-Python was applied to identify eutectic points in the present work using the Al-Mg-Zn-Cu system as a case study. The proposed method was tested in binary, ternary, and quaternary systems for its reliability and accuracy in predicting eutectic points. In addition, two screening approaches were developed to examine the results and determine the eutectic points. Results showed that the high-throughput method was able to identify a eutectic point in the Al-Mg-Zn-Cu quaternary system with the composition 50Al-14Mg-23Zn-13Cu. Binary and ternary results matched well with existing data, and the quaternary result showed the high-throughput method's capability in other quaternary or even higher-order systems.

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Mechanical properties and microstructure of directionally solidified Fe-4.25%C eutectic alloy

Cited by 9 publications

References 16 publications

Effects of Chemical Composition and Solidification Rate on the Solidification Behavior of High-Cr White Irons

Effects of Chemical Composition and Solidification Rate on the Solidification Behavior of High-Cr White Irons

Designing Eutectic High‐Entropy Alloys Containing Nonmetallic Elements

Identification of the Eutectic Points in the Multicomponent Systems with the High-Throughput CALPHAD Approach

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