Deformation microstructure and tensile strength of cold rolled pearlitic steel sheets

S. Tagashira, K. Sakai, T. Furuhara, T. Maki

研究成果: Article査読

67 被引用数 (Scopus)

抄録

The deformation microstructure produced by heavy cold rolling (from 70% to 95% reduction) of pearlitic structure with various amounts of rolling and the tensile strength of the cold rolled sheets were studied in the plain carbon steels with various carbon contents (0.6, 0.76, and 1.0 mass%C). The deformation microstructure was classified into the following three types; 1) Irregularly Bent Lamella (IBL): lamellae originally inclined with large angles to the rolling plane and irregularly bent after deformation, 2) Coarse Lamella with Shear band (CLS): the rhomboidal blocks of weakly deformed lamellae bounded by shear band, 3) Fine Lamella (FL): heavily deformed lamellae aligned parallel to the rolling direction with fine interlamellar spacings. As rolling reduction increases, the proportion of FL increases. The tensile strength of cold rolled specimens increases with rolling reduction. Work hardening with respect to true strain by cold rolling is similar to that obtained by wire drawing. After 92% cold roiling of 1.0 mass%C steel, the tensile strength over 2 500 MPa was achieved.

本文言語English
ページ(範囲)1149-1155
ページ数7
ジャーナルIsij International
40
11
DOI
出版ステータスPublished - 2000
外部発表はい

ASJC Scopus subject areas

  • 材料力学
  • 機械工学
  • 金属および合金
  • 材料化学

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