Control of carbides and graphite in Ni-hard type cast iron for hot strip mills

Sergio Villanueva Bravo, Kaoru Yamamoto, Hirofumi Miyahara, Keisaku Ogi

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    8 Citations (Scopus)

    Abstract

    The carbide and graphite formation and redistribution of alloy elements during solidification were investigated on Ni-hard type cast iron (Fe-C-Si-Ni-Cr-Mo) to develop higher quality rolls for hot steel strip mills. By the control of Ni and Si contents of iron, eutectic graphite flakes crystallize even in cast irons containing strong carbide formers such as V, Nb and Cr. The crystallization of Ni-hard type cast iron with V and Nb proceeds in the order of primary γ, γ + MC, γ + M3C and γ + graphite eutectic. Since the influence of each alloying element on graphite formation is estimated based on the solubility of C in molten iron, the change in graphite forming tendency of residual liquid is evaluated by the parameter expressing the solubility limit of C to molten iron. The amount of graphite increases with the decreasing of solubility parameter. In addition, inoculation with ferrosilicon effectively increases the graphite flakes.

    Original languageEnglish
    Title of host publicationSelected, peer reviewed papers from The Sixth Pacific Rim International Conference on Advanced Materials and Processing, PRICM 6
    Pages1023-1026
    Number of pages4
    EditionPART 2
    Publication statusPublished - Dec 1 2007
    Event6th Pacific Rim International Conference on Advanced Materials and Processing, PRICM 6 - Jeju, Korea, Republic of
    Duration: Nov 5 2007Nov 9 2007

    Publication series

    NameMaterials Science Forum
    NumberPART 2
    Volume561-565
    ISSN (Print)0255-5476

    Other

    Other6th Pacific Rim International Conference on Advanced Materials and Processing, PRICM 6
    Country/TerritoryKorea, Republic of
    CityJeju
    Period11/5/0711/9/07

    All Science Journal Classification (ASJC) codes

    • Materials Science(all)
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering

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