Utilization of L-PBF process for manufacturing an in-situ Fe-TiC metal matrix composite

Perminov, Anton; Bartzsch, Gert; Asgarian, Ali; Chattopadhyay, Kinnor; Volkova, Olena

doi:10.1016/j.jallcom.2022.166281

Cited by 14 publications

(1 citation statement)

References 54 publications

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“…Notably, a substantial shift of the in situ reinforcements to the nanometer (nm) size range for the investigated chemical compositions is possible through the utilization of rapid cooling processes, such as gas atomization and additive manufacturing. In the authors' recent investigations, [25,26] this approach has been successfully employed to fabricate Fe-5TiC composites, resulting in significantly finer reinforcement particles and, consequently, improved mechanical properties of the MMC.…”

Section: Microstructure Characterizationmentioning

confidence: 99%

Cold Crucible Induction Melting for the Fabrication of Fe–xTiC In Situ Metal Matrix Composites: Alloying Efficiency and Microstructural Analysis

Perminov,

Günther,

Ilatovskaia

et al. 2023

Adv Eng Mater

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Fe–xTiC in situ metal matrix composites (MMCs) are fabricated utilizing a cold crucible inductive melting (CCIM) technique with varying TiC amounts (2, 3.5, and 5 wt%). Steel blocks and pure Ti plates are remelted in a water‐cooled cupper crucible. The subsequent solidification of [Ti]‐ and [C]‐rich melt yields TiC reinforcement particles in an ingot. The holding time varies between 5 and 30 min, whereas the holding temperature alters depending on the amount of TiC, ranging from 1380 to 1620 °C for Fe‐5TiC and Fe‐2TiC, respectively. Alloying efficiency for TiC‐forming elements is estimated for all fabricated Fe–xTiC ingots by comparing [Ti] and [C] target values with measured ones. The lower TiC amounts and shorter holding times result in decreased [Ti] and [C] losses. SEM analysis of three cross‐section samples representing different TiC amounts reveals two distinct morphologies of TiC in situ reinforcements: primary blocky/cubic and eutectic plate‐like precipitates. The blocky precipitates appear slightly finer with a decrease in TiC amount (4.4 ± 1.2 μm for Fe‐5TiC and 3.8 ± 0.7 μm for Fe‐2TiC), whereas the length of plate‐like precipitates noticeably decreases in the samples with lower TiC amounts (11.0 ± 7.0 μm for Fe‐5TiC and 6.8 ± 3.6 μm for Fe‐2TiC).

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Section: Microstructure Characterizationmentioning

confidence: 99%

Cold Crucible Induction Melting for the Fabrication of Fe–xTiC In Situ Metal Matrix Composites: Alloying Efficiency and Microstructural Analysis

Perminov,

Günther,

Ilatovskaia

et al. 2023

Adv Eng Mater

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Remelting of In Situ Fe‐xTiC Metal Matrix Composites by the Sessile Drop Method: Characteristic Temperatures and Microstructural Analysis

Perminov,

Ilatovskaia,

Wei

et al. 2024

steel research int.

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The remelting of Fe‐xTiC metal matrix composites (MMCs) is studied using the sessile drop method. This is to determine the conditions needed for the complete dissolution of TiC precipitates in the Fe‐based melt. Samples with different amounts of TiC (2, 3.5, and 5 wt%) are analyzed in a hot‐stage microscope (HSM), capturing the softening and melting temperatures. A Cr‐alloyed steel is selected as a matrix. Consequently, the presence of TiC elevates the melting initiation temperature above the melting point of pure iron (e.g., 1659 ± 10 °C for Fe‐5TiC). Furthermore, samples with higher TiC amounts exhibit higher melting initiation temperatures. This trend is confirmed by differential scanning calorimetry measurements, conducted on the representative Fe‐xTiC samples. Microstructural examinations of the solidified (HSM) samples identify two distinct TiC precipitate morphologies: primary blocky/cubic and secondary eutectic plate like. For instance, the Fe‐5TiC sample contains numerous blocky/cubic precipitates (7.5 ± 3.1 μm) clustered at the upper cross‐ section, while secondary plate‐like precipitates (20.4 ± 11.8 μm) are uniformly distributed in eutectic assemblies with the matrix. This study provides meaningful insights for optimizing the production of as‐cast and as‐atomized Fe‐TiC MMCs, particularly in selecting reinforcement levels and homogenization temperatures for complete TiC dissolution.

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Research and prospect of particle reinforced iron matrix composites

Dong,

Yang,

Wang

et al. 2023

Int J Adv Manuf Technol

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Utilization of L-PBF process for manufacturing an in-situ Fe-TiC metal matrix composite

Cited by 14 publications

References 54 publications

Cold Crucible Induction Melting for the Fabrication of Fe–xTiC In Situ Metal Matrix Composites: Alloying Efficiency and Microstructural Analysis

Cold Crucible Induction Melting for the Fabrication of Fe–xTiC In Situ Metal Matrix Composites: Alloying Efficiency and Microstructural Analysis

Remelting of In Situ Fe‐xTiC Metal Matrix Composites by the Sessile Drop Method: Characteristic Temperatures and Microstructural Analysis

Research and prospect of particle reinforced iron matrix composites

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