Abstract
The morphology of carbides in AISI M35 high-speed steel electroslag remelting ingot, as well as decomposition mechanism of the carbides at high temperature were investigated by thermodynamic calculations, microscopy analyses, and phase analyses. The calculation results indicated that the main types carbides formed in steel during solidification were MC and M2C. Through observation, it was found that there were lots of network eutectic carbides in the electroslag ingot, and the size of carbides at the center was larger than that at the edge. The micro morphologies of carbides in the ingot mainly had two types: a lath-like shape and a brain one, and both phases were identified as M2C. They could be decomposed and formed new phases MC and M6C at high temperatures. The decomposition of M2C carbides occurred obviously with the increasing holding temperature, especially at 1,423 to 1,473 K. Which were more easily broken and deformed in the subsequent working.
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© 2024 The Minerals, Metals & Materials Society
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Liang, W., Li, J., Li, Jh. (2024). Formation and Decomposition Mechanism of Carbides in AISI M35 High-Speed Steel Produced by ESR. In: TMS 2024 153rd Annual Meeting & Exhibition Supplemental Proceedings. TMS 2024. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-031-50349-8_122
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DOI: https://doi.org/10.1007/978-3-031-50349-8_122
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