Formation of ultra fine grained structure during annealing of heavily drawn metastable austenitic steel wire

T. Fukumaru, T. Inoue, T. Tsuchiyama, S. Takaki

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

    Abstract

    It is well known that the ultra grain refinement can be achieved by sever cold rolling, followed by reversion treatment in metastable austenitic stainless steel plate. In this study, the cold rolling was replaced by cold drawing. This procedure was applied to a metastable austenitic steel (Fe-16Cr-10Ni alloy) thin wire, and then the microstructure development during cold drawing and annealing was investigated. The austenite phase transformed to martensite during the drawing. Vickers hardness of the wire markedly increased with increasing the drawing strain. When the drawing strain reached about 4,5, the wire exhibited martensite single structure and had high hardness of Hv4.4GPa, Annealing of the heavily drawn wire at around 900K for 0.6ks leads to the formation of reversed austenite with the diffusional reversion mechanism, As a result, ultra fine-grained austenitic single structure with the grain size of about 0.6μm was obtained, It was also found that the wire has an excellent combination of a strength and ductility.

    Original languageEnglish
    Title of host publicationRecrystallization and Grain Growth III - Proceedings of the Third International Conference on Recrystallization and Grain Growth, ReX and GG III
    PublisherTrans Tech Publications Ltd
    Pages1309-1312
    Number of pages4
    EditionPART 2
    ISBN (Print)087849443X, 9780878494439
    DOIs
    Publication statusPublished - Jan 1 2007
    Event3rd International Conference on Recrystallization and Grain Growth, ReX GG III - Jeju Island, Korea, Republic of
    Duration: Jun 10 2007Jun 15 2007

    Publication series

    NameMaterials Science Forum
    NumberPART 2
    Volume558-559
    ISSN (Print)0255-5476

    Other

    Other3rd International Conference on Recrystallization and Grain Growth, ReX GG III
    Country/TerritoryKorea, Republic of
    CityJeju Island
    Period6/10/076/15/07

    All Science Journal Classification (ASJC) codes

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

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