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On the Decarburization of Surface Pearlite

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Abstract

Under appropriate conditions, surface pearlite can form on the outer surfaces of specimen. The microstructure evolution during the decarburization of surface pearlite was investigated. Two cementite dissolution mechanisms were observed. The first involved the direct dissolution of cementite into the pearlitic ferrite. The second mechanism involved the formation of austenite along the cementite/ferrite interface. Both mechanisms were active near the surface of specimens, and the second mechanism was observed for cementite plates adjacent to the austenite core.

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This work was supported by the National Natural Science Foundation of China (Grant 51771100). Electron microscopy was carried out at the Canadian Centre for Electron Microscopy (CCEM), a national facility supported by NSERC, the Canada Foundation for Innovation, under the MSI program, and McMaster University.

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Correspondence to Hatem S. Zurob.

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Manuscript submitted April 1, 2021; accepted May 6, 2021.

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Li, S., Yang, Z., Zurob, H.S. et al. On the Decarburization of Surface Pearlite. Metall Mater Trans A 52, 3198–3203 (2021). https://doi.org/10.1007/s11661-021-06328-z

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  • DOI: https://doi.org/10.1007/s11661-021-06328-z

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