The role of deformation twinning in the formation of a fine-grained structure in cold-rolled 310 steels

Tatsuya Morikawa, K. Higashida

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

The role of deformation twinning in the formation of a fine-grained structure in cold-rolled 310S steels has been investigated by using transmission electron microscopy. When 310S steels were rolled at room temperature, a deformation twin appeared in the early stage of the rolling process. A fine lamellar structure consisting of the deformation twin and matrix (T-M) developed with increased rolling strain. At moderate strain, micro shear bands appeared in the area of the T-M lamellar structure, and the shear bands grew and multiplied during further cold-rolling. Such multiplication of shear bands destroyed the T-M lamellar structure, which caused the development of a fine-grained structure. In shear bands, a highly misoriented structure with a submicron grain size was generated. In this paper, the mechanism of the transmutation process from the T-M lamellae into the fine-grained structure is discussed. Particular emphasis is laid on the role of deformation twinning in the formation of the fine-grained structure.

Original languageEnglish
Pages (from-to)2581-2585
Number of pages5
JournalJournal of Materials Science
Volume41
Issue number9
DOIs
Publication statusPublished - May 2006

Fingerprint

Shear bands
Steel
Twinning
twinning
Lamellar structures
fine structure
steels
shear
matrices
Cold rolling
transmutation
cold rolling
lamella
multiplication
Transmission electron microscopy
grain size
transmission electron microscopy
room temperature
Temperature

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

The role of deformation twinning in the formation of a fine-grained structure in cold-rolled 310 steels. / Morikawa, Tatsuya; Higashida, K.

In: Journal of Materials Science, Vol. 41, No. 9, 05.2006, p. 2581-2585.

Research output: Contribution to journalArticle

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