In-situ observation of growth characteristics of M7C3 carbides in hypoeutectic Fe-Cr-C alloys

Li, Leiji; Li, Wanming; Zhang, Bo; Wang, Bin; Zang, Ximin

doi:10.1016/j.matchar.2022.112143

Materials Characterization

2022

DOI: 10.1016/j.matchar.2022.112143

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In-situ observation of growth characteristics of M7C3 carbides in hypoeutectic Fe-Cr-C alloys

Leiji Li

Wanming Li

Bo Zhang³

et al.

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Cited by 4 publications

References 40 publications

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Evolution of primary carbides during accelerated solidification process of high-carbon martensitic stainless steels

Liu,

Zhou,

Shen

et al. 2023

Journal of Materials Research and Technology

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Evolution of primary carbides during accelerated solidification process of high-carbon martensitic stainless steels

Liu,

Zhou,

Shen

et al. 2023

Journal of Materials Research and Technology

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Optical Measurement of the Stoichiometry of Thin-Film Compounds Synthetized From Multilayers: Example of Cu(In,Ga)Se2

Poeira,

Siopa,

Anacleto

et al. 2023

Microscopy and Microanalysis

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The properties of centimeter-sized thin-film compound semiconductors depend upon the morphology and chemical composition of the multiple submicrometer-thick elemental and alloy precursor layers from which they are synthesized. The challenge is to characterize the individual precursor layers over these length scales during a multistep synthesis without altering or contaminating them. Conventional electron and X-ray-based morphological and compositional techniques are invasive, require preparation, and are thus incompatible with in-line synthesis processes. In a proof-of-concept study, we applied confocal laser scanning microscopy (CLSM) as a noninvasive optical imaging technique, which measures three-dimensional surface profiles with nanoscale resolution, to this challenge. Using an array of microdots containing Cu(In,Ga)Se2 semiconductor layers for solar cells as an example, we performed CLSM correlative studies to quantify morphological and layer thickness changes during four stages of a thin-film compound synthesis. Using simple assumptions, we measured the micrometer-scale spatially resolved chemical composition of stacked precursor layers to predict the final material phases formed and predict relative device performance. The high spatial resolution, coupled with the ability to measure sizeable areas without influencing the synthesis at high speed, makes CLSM an excellent prospect for research and quality control tool for thin films.

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Improved Gx40CrNi25-20 grade austenitic stainless steel

Yilmaz,

Teker,

Atik

2024

Materials Testing

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In this study, Ce inoculated GX40CrNi25-20 material was produced by casting. The materials were subjected to heat treatment by being exposed to two different temperatures (1100, 1150 °C) and two different cooling intensities. The effects of heat treatment on primary and secondary carbide concentration, distribution, and type were investigated by using optical microscope, scanning electron microscope, energy dispersive spectrometry, X-ray diffraction, and microhardness tests. The adhesive wear behavior of the materials was determined. After the homogenization heat treatment, the increased cooling intensity application decreased the hardness of the samples. After the homogenization heat treatment, the size of the primary carbides decreased and their distribution became homogeneous. Secondary carbides were dispersed into smaller and equiaxed formin the matrix. EGR inoculating reduced the precipitation of carbides and changed the shape of the precipitate to granule.

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In-situ observation of growth characteristics of M7C3 carbides in hypoeutectic Fe-Cr-C alloys

Cited by 4 publications

References 40 publications

Evolution of primary carbides during accelerated solidification process of high-carbon martensitic stainless steels

Evolution of primary carbides during accelerated solidification process of high-carbon martensitic stainless steels

Optical Measurement of the Stoichiometry of Thin-Film Compounds Synthetized From Multilayers: Example of Cu(In,Ga)Se2

Improved Gx40CrNi25-20 grade austenitic stainless steel

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