Properties of ultrafine-grained steel by repeated shear deformation of side extrusion process

Akira Azushima, Koshiro Aoki

研究成果: Article査読

64 被引用数 (Scopus)

抄録

The development of an ultrafine grain size during repeated shear deformation of side extrusion of ultra-low-carbon steel with an initial grain size of approximately 150 μm and a tensile strength of 200 MPa was investigated. Experiments were carried out at room temperature and at a low extrusion speed of 2 mm min-1. Repeated side extrusions with lateral pressure were carried out for up to ten passes for the specimen extruded without rotation (route A). Uniform shear deformation was obtained by the side extrusion with the lateral pressure and an equivalent strain after a single side extrusion was 1.15. After ten passes of the side extrusions, an ultrafine-grained steel with a grain size of 0.5 μm x 0.2 μm was realized and the tensile strength was over 1000 MPa.

本文言語English
ページ(範囲)45-49
ページ数5
ジャーナルMaterials Science and Engineering A
337
1-2
DOI
出版ステータスPublished - 2002 11 25
外部発表はい

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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