Managing Both Strength and Ductility in Duplex Stainless Steel with Heterogeneous Lamella Structure

Lin Xie, Tianlin Huang, Ling Zhang*, Wenquan Cao, Guilin Wu, Xiaoxu Huang

*Corresponding author for this work

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Abstract

A commercial 2507 duplex stainless steel with heterogeneous lamella structures was prepared by cold-rolling and appropriate annealing. A yield strength of 800 MPa, a tensile strength of 1000 MPa and a uniform elongation of 20% were achieved in the sample after 90% cold rolling following by annealing at 900 °C for 1 min. The origin of the excellent mechanical properties was discussed by microstructural features and the evolution of back-stress.
Original languageEnglish
JournalMaterials Science and Engineering: A - Structural Materials: Properties, Microstructure and Processing
Volume738
Pages (from-to)190-193
ISSN0921-5093
DOIs
Publication statusPublished - 2018

Keywords

  • Duplex stainless steel
  • Mechanical properties
  • Heterogeneous lamella structure
  • Back stress
  • Strain hardening

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