Application of severe torsion straining process for grain refinement of steel

Yoshiyasu Kawasaki, Koji Neishi, Yuichi Miyahara, Katsuaki Nakamura, Kenji Kaneko, Michihiko Nakagaki, Zenji Horita

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

    7 Citations (Scopus)

    Abstract

    Severe torsion straining process (STSP) is a useful technique for grain refinement of metallic materials. With this process, a local heated zone is produced in a rod and one side of the rod is rotated with respect to the other so that torsion strain is introduced into the local heated zone. Severe straining is then achieved continuously throughout the rod by simultaneous rotation and longitudinal movement of the rod. Thus, the STSP is a continuous process and a die-less process for grain refinement. It is suggested that the STSP provide potential for commercialization. In this study, S45C steel rods with 12 mm in diameter were subjected to STSP. This process was conducted at a temperature of 923 K (650°C) with various ratios of rotation to longitudinal movement of a rod. Local heating was made using an induction coil and both sides of the local heated zone were cooled by water spray. Microscopy observation revealed that the initial grain size of ∼15 μm was reduced to ∼2 μm using the STSP.

    Original languageEnglish
    Title of host publicationNanomaterials by Severe Plastic Deformation, NanoSPD3 - Proceedings of the 3rd International Conference on Nanomaterials by Severe Plastics Deformation
    Pages943-948
    Number of pages6
    Publication statusPublished - Dec 1 2006
    Event3rd International Conference on Nanomaterials by Severe Plastics Deformation, NanoSPD3 - Fukuoka, Japan
    Duration: Sep 22 2005Sep 26 2005

    Publication series

    NameMaterials Science Forum
    Volume503-504
    ISSN (Print)0255-5476

    Other

    Other3rd International Conference on Nanomaterials by Severe Plastics Deformation, NanoSPD3
    Country/TerritoryJapan
    CityFukuoka
    Period9/22/059/26/05

    All Science Journal Classification (ASJC) codes

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

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