Managing both strength and ductility in duplex stainless steel with heterogeneous lamella structure

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...

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Bibliographic Details
Published in:Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2018-12, Vol.738, p.190-193
Main Authors: Xie, Lin, Huang, Tianlin, Zhang, Ling, Cao, Wenquan, Wu, Guilin, Huang, Xiaoxu
Format: Article
Language:English
Subjects:
Annealing
Back stress
Cold rolling
Duplex stainless steel
Duplex stainless steels
Elongation
Heterogeneous lamella structure
Lamella
Lamellar structure
Mechanical properties
Microstructure
Stainless steel
Steel structures
Strain hardening
Tensile strength
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Summary: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.
ISSN:0921-5093
1873-4936
DOI:10.1016/j.msea.2018.09.085