Analysis of Carbides in Multi-component Cast Iron Design Based on High Entropy Alloys Concepts

Pasini, Willian Martins; Bellé, Matheus Roberto; Pereira, L.C.; Amaral, Regis Fabiano do; Barcellos, Vinicius Karlinski de

doi:10.1590/1980-5373-mr-2020-0398

Cited by 8 publications

(3 citation statements)

References 29 publications

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“…(Fe,Cr) 7 C 3 type phases are formed in chromium wear-resistant cast irons at the crystallization stage in the form of dispersed precipitates comparable in size to (Fe,Cr) 7 C 3 eutectic carbide [56]. This phase precipitates in much larger volumes under TTM conditions in the solid-liquid state in accordance with the data obtained.…”

Section: Phase Analysissupporting

confidence: 87%

Effect of thermal treatment of chromium iron melts on the structure and properties of castings

Panichkin¹,

Wieleba²,

Kenzhegulov³

et al. 2023

Mater. Res. Express

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The article describes the results of experimental studies for the effect of thermal treatment (TTM) of G-X300CrMo27-1 high-chromium cast iron samples in the solid-liquid and liquid state on the structure, phase composition and properties of ingots. For ingots with a carbon content of 2.8 to 4.5 wt.%, cooled at a rate of 3.3 * 10-2 deg/s, the dependencies of the structure, phase composition, composition of primary, eutectic carbides and matrix, hardness HV and microhardness of its individual phases and resistance to abrasive wear from the temperature of isothermal holding at TTM. A significant effect of the TTM temperature of melts on the structure and properties of high-chromium cast iron ingots were detected. The temperatures of inflection on the plotted curves for the characteristics of the structure and properties of the ingots were associated with a phase transition in iron at 1400 0С and with a point on the phase diagram liquidus of the Fe-Cr system. This as well as an increase in the concentration of chromium in the composition of primary carbides with an increase in the TTM temperature up to 1480 0С, made it possible to assume that (Cr, Fe)7C3 clusters stable in composition were formed in the melt of such cast irons below 1500 0С. The reasons for the decrease in the size of primary carbides during G-X300CrMo27-1 molten chromium iron overheating above 1500 0С were substantiated based on these data. During the TTM of fine-crystalline ingots made of hypereutectic cast iron in the temperature range between the liquidus and solidus lines, it was detected that the primary carbides (Cr, Fe)7C3 recrystallized resulting in a significant decrease in the chromium content and an increase in the iron content in them. At the same time, their sizes did not change significantly. Their share increased, and the share of eutectic carbides decreased. Such process also had a significant impact on the properties of the resulting ingots. The most preferable temperatures of hot metal cast irons in the liquid and solid-liquid states were identified based on the results of the studies.

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Section: Phase Analysissupporting

confidence: 87%

Effect of thermal treatment of chromium iron melts on the structure and properties of castings

Panichkin¹,

Wieleba²,

Kenzhegulov³

et al. 2023

Mater. Res. Express

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“…The MC, M 2 C, M 6 C, and M 7 C 3 carbides can be solidified as primary and/or eutectic carbides directly from the melt [ 12 , 13 ]. During solidification the liquid phase solidifies through different eutectic reactions leading to the formation of up to four eutectics: (γ + MC), (γ + M 6 C) or (γ + M 2 C) and (γ + M 7 C 3 ) [ 14 ].…”

Section: Introduction and Literature Reviewmentioning

confidence: 99%

Qualitative study of carbides in liquid phase sintered M3:2 high speed steel

Khraisat,

Abu Jadayil

2024

Heliyon

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“…Developing new abrasion-resistant cast iron based on a multi-component approach is a well-known research topic, with many studies supporting this hypothesis. Different high-alloyed cast iron compositions have been studied by diverse researchers such as Matsubara et al 14 , Kusumoto et al 6 , Purba et al 15 , Pasini et al 16 and Bedolla-Jacuinde et al 17 . The influence of Ni on the multi-component cast iron has also been studied by Kusumoto et al 7 .…”

Section: Introductionmentioning

confidence: 99%

Improving the Wear Resistance of High Chromium Cast Iron through High Entropy Alloys Concepts and Microstructure Refinement

Pasini,

Pereira,

Bitka

et al. 2023

Mat. Res.

Self Cite

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High Chromium Cast Iron (HCCI) has demonstrated its effectiveness as a potential material for applications in severe environments due to its remarkable wear resistance attributed to the volumetric fraction of carbides in the microstructure. This study investigates a novel high-alloyed composition of white cast iron named High Entropy White Cast Iron (HEWCI), which merges the concepts of HCCI and high entropy alloys. Specifically designed chemical compositions incorporating Vanadium (V), Molybdenum (Mo), and Nickel (Ni) were employed to enhance its wear resistance properties. The solidification path, microstructural characterization, and wear responses of HEWCI were evaluated. XRD and SEM techniques were carried out for characterization purposes. Linearly reciprocating ball-on-flat sliding wear tests were conducted using a high-frequency reciprocation rig (HFRR) tribometer, assessing wear volume, linear wear rate, specific wear rate (κ), and coefficient of friction (COF). The results revealed microstructural refinement and precipitation of new carbides through V, Ni, and Mo additions. This approach demonstrates that adding carbide-forming elements and refining the microstructure are promising strategies for enhancing wear performance in HEWCI alloys.

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Analysis of Carbides in Multi-component Cast Iron Design Based on High Entropy Alloys Concepts

Cited by 8 publications

References 29 publications

Effect of thermal treatment of chromium iron melts on the structure and properties of castings

Effect of thermal treatment of chromium iron melts on the structure and properties of castings

Qualitative study of carbides in liquid phase sintered M3:2 high speed steel

Improving the Wear Resistance of High Chromium Cast Iron through High Entropy Alloys Concepts and Microstructure Refinement

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