Effect of copper addition on grain growth behavior of austenite in low carbon steels

K. Nakashima, K. Imakawa, Y. Futamura, T. Tsuchiyama, S. Takaki

    Research output: Contribution to journalConference articlepeer-review

    6 Citations (Scopus)

    Abstract

    The effect of copper (Cu) addition on the grain growth behavior of austenite was investigated in a low carbon steel and a Cu bearing low carbon steel. Cu addition to the steel does not affect the nucleation rate of reversed austenite on heating in the martensitic structure but markedly retards the grain growth of the austenite during holding at 1173K (austenitization). As a result, the grain size of austenite in the Cu bearing steel becomes about one-third times smaller than that in the base steel after austenitization for 14.4ks. TEM observations in the Cu bearing steel revealed that Cu particles precipitated during aging treatment had completely dissolved in 1.2ks of austenitization. Therefore, the retardation of grain growth of austenite can not be explained by the grain boundary pinning effect of Cu particles but by the dragging effect of Cu atoms in the austenitic solid solution.

    Original languageEnglish
    Pages (from-to)905-910
    Number of pages6
    JournalMaterials Science Forum
    Volume467-470
    Issue numberII
    DOIs
    Publication statusPublished - Jan 1 2004
    EventProceedings of the Second Joint International Conferences on Recrystallization and Grain Growth, ReX and GG2, SF2M - Annecy, France
    Duration: Aug 30 2004Sep 3 2004

    All Science Journal Classification (ASJC) codes

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

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