Mechanism of dynamic continuous recrystallization during superplastic deformation in a microduplex stainless steel

Kaneaki Tsuzaki, Huang Xiaoxu, T. Maki

Research output: Contribution to journalArticle

83 Citations (Scopus)

Abstract

Microstructural evolution during the cyclic cold-rolling and annealing process in an (α + γ) microduplex stainless steel, which consists of α subgrains and fine γ particles, has been studied in detail with the aim of clarifying the mechanism of dynamic continuous recrystallization. A continuous increase in α subgrain boundary misorientation is obtained by the present processing where grain boundary sliding does not occur and the effect of increasing boundary misorientation with cumulative strain is comparable to those observed in dynamic continuous recrystallization of superplastic aluminium alloys. The increase in boundary misorientation is accounted for by the absorption of dislocations into subgrain boundaries during annealing, dislocations which had operated to accommodate the plastic strain incompatibility of the neighboring phases undergoing slip deformation. The present results show that grain boundary sliding is not indispensable but the difference in accommodation deformation between adjacent subgrains is of great importance for the dynamic continuous recrystallization during superplastic deformation.

Original languageEnglish
Pages (from-to)4491-4499
Number of pages9
JournalActa Materialia
Volume44
Issue number11
DOIs
Publication statusPublished - Jan 1 1996
Externally publishedYes

Fingerprint

Superplastic deformation
Stainless Steel
Grain boundary sliding
Stainless steel
Annealing
Microstructural evolution
Cold rolling
Aluminum alloys
Plastic deformation
Processing

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Polymers and Plastics
  • Metals and Alloys

Cite this

Mechanism of dynamic continuous recrystallization during superplastic deformation in a microduplex stainless steel. / Tsuzaki, Kaneaki; Xiaoxu, Huang; Maki, T.

In: Acta Materialia, Vol. 44, No. 11, 01.01.1996, p. 4491-4499.

Research output: Contribution to journalArticle

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