Characterization of a cold-rolled 2101 lean duplex stainless steel

Paola Bassani, Marco Breda, Katya Brunelli, Istvan Mészáros, Francesca Passaretti, Michela Zanellato, Irene Calliari

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15 Citations (Scopus)

Abstract

Duplex stainless steels (DSS) may be defined as a category of steels with a two-phase ferritic-austenitic microstructure, which combines good mechanical and corrosion properties. However, these steels can undergo significant microstructural modification as a consequence of either thermo-mechanical treatments (ferrite decomposition, which causes σ- and χ-phase formation and nitride precipitation) or plastic deformation at room temperature [austenite transformation into strain-induced martensite (SIM)]. These secondary phases noticeably affect the properties of DSS, and therefore are of huge industrial interest. In the present work, SIM formation was investigated in a 2101 lean DSS. The material was subjected to cold rolling at various degrees of deformation (from 10 to 80% thickness reduction) and the microstructure developed after plastic deformation was investigated by electron backscattered diffraction, X-ray diffraction measurements, and hardness and magnetic tests. It was observed that SIM formed as a consequence of deformations higher than ~20% and residual austenite was still observed at 80% of thickness reduction. Furthermore, a direct relationship was found between microstructure and magnetic properties.

Original languageEnglish
Pages (from-to)988-995
Number of pages8
JournalMicroscopy and Microanalysis
Volume19
Issue number4
DOIs
Publication statusPublished - Aug 1 2013

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Keywords

  • Cold deformation
  • EBSD investigation
  • Lean duplex stainless steel
  • Magnetic measurements
  • Strain-induced martensite

ASJC Scopus subject areas

  • Instrumentation

Cite this

Bassani, P., Breda, M., Brunelli, K., Mészáros, I., Passaretti, F., Zanellato, M., & Calliari, I. (2013). Characterization of a cold-rolled 2101 lean duplex stainless steel. Microscopy and Microanalysis, 19(4), 988-995. https://doi.org/10.1017/S1431927613001426