Effect of grain boundary segregation of phoshorus on the Hall-Petch coefficient of ferritic iron

M. Fujihara, N. Nakada, T. Tsuchiyama, S. Takaki

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

    1 Citation (Scopus)

    Abstract

    In IF steel without interstitials, the Hall-Petch coefficient (ky) is low as about 100 MPa·μm1/2 but it is enhnced by adding some alloying elements. Author et al. has already reported that a small amount of carbon increases ky greatly while nitrogen does not give influence so much. On the other hand, it is already known that phosphorus has a tendency to segregate at grain boundary of polycrystalline ferritic iron and that phosphorus also gives some influence to ky. However, the effect of carbon is not considered on the evaluation of ky in steels containing phosphorus. In this study, effect of phosphorus on the ky of ferritic iron was investigated by varying the grain size in Ti bearing IF-steel with different amount of phosphorus. Besides, the concentration of phosphorus and carbon at grain boundary was estimated by the grain boundary segregation model proposed by Seah et al. and the interaction between phosphorus and carbon was discussed in connection with the change of ky.

    Original languageEnglish
    Title of host publicationTHERMEC 2009
    EditorsTara Chandra, Tara Chandra, Tara Chandra, N. Wanderka, N. Wanderka, N. Wanderka, Walter Reimers, Walter Reimers, Walter Reimers, M. Ionescu, M. Ionescu, M. Ionescu
    PublisherTrans Tech Publications Ltd
    Pages3212-3217
    Number of pages6
    ISBN (Print)0878492941, 9780878492947
    DOIs
    Publication statusPublished - 2010
    Event6th International Conference on Processing and Manufacturing of Advanced Materials - THERMEC'2009 - Berlin, Germany
    Duration: Aug 25 2009Aug 29 2009

    Publication series

    NameMaterials Science Forum
    Volume638-642
    ISSN (Print)0255-5476
    ISSN (Electronic)1662-9752

    Other

    Other6th International Conference on Processing and Manufacturing of Advanced Materials - THERMEC'2009
    Country/TerritoryGermany
    CityBerlin
    Period8/25/098/29/09

    All Science Journal Classification (ASJC) codes

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

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