Properties of ultra low carbon steel produced by repetitive shear deformation of side extrusion

Akira Azushima, Koshiro Aoki, Takeshi Inoue

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Ultrafine grained microstructure was produced by repetitive deformation using the side-extrusion method from ultra low carbon steel with an initial grain size of about 150 μm. The repetitive deformations were imposed at a low extrusion speed of 2 mn/min at room temperature. The side-extrusions with lateral pressure were repeated up to 10 passes without rotation. The sample was uniformly deformed by the side-extrusion, and the equivalent strain was 1.15 after a single pass of the side-extrusion. The ultimate tensile strength increased from 200 MPa with an increasing number of side extrusion passes. After 10 passes of side-extrusion, an ultrafine grained steel with a tensile strength of over 1000 MPa and a grain size of 0.5 μm×0.2 μm was developed.

Original languageEnglish
Pages (from-to)762-766
Number of pages5
JournalTetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
Volume87
Issue number12
DOIs
Publication statusPublished - 2001 Dec

    Fingerprint

Keywords

  • ECAE
  • Shear deformation
  • Side extrusion
  • Steel
  • Ultrafine grain

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Metals and Alloys
  • Materials Chemistry

Cite this