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Tailoring the mechanical properties of austempered low-carbon ferritic–bainitic/martensitic dual-phase steel
https://orcid.org/http://orcid.org/0000-0001-7179-0052
A simple heat treatment of austenitization followed by austempering was proposed to obtain ferritic–bainitic/martensitic dual-phase (DP) microstructure with ~ 18% bainite and ~ 30% martensite in low-carbon steel, which provides a promising way for processing of low-cost high-performance advanced high-strength steels (AHSSs) with improved strength–ductility trade-off, tensile toughness, and fracture behavior. The processed bainite-aided DP steel exhibited high yield stress and high ultimate tensile strength while maintaining high total elongation to failure, which were beyond the expected trends for conventional steels, ferritic–martensitic DP steels, and ferritic–bainitic DP steels. The continuous yielding behavior (with the disappearance of the yield point phenomenon) and more ductile fracture surface appearance were also remarkable. Accordingly, besides grain refinement by cold rolling and intercritical annealing, the present work proposed an alternative way for processing high-performance DP steels.
Tailoring the mechanical properties of austempered low-carbon ferritic–bainitic/martensitic dual-phase steel
https://orcid.org/http://orcid.org/0000-0001-7179-0052
A simple heat treatment of austenitization followed by austempering was proposed to obtain ferritic–bainitic/martensitic dual-phase (DP) microstructure with ~ 18% bainite and ~ 30% martensite in low-carbon steel, which provides a promising way for processing of low-cost high-performance advanced high-strength steels (AHSSs) with improved strength–ductility trade-off, tensile toughness, and fracture behavior. The processed bainite-aided DP steel exhibited high yield stress and high ultimate tensile strength while maintaining high total elongation to failure, which were beyond the expected trends for conventional steels, ferritic–martensitic DP steels, and ferritic–bainitic DP steels. The continuous yielding behavior (with the disappearance of the yield point phenomenon) and more ductile fracture surface appearance were also remarkable. Accordingly, besides grain refinement by cold rolling and intercritical annealing, the present work proposed an alternative way for processing high-performance DP steels.
Tailoring the mechanical properties of austempered low-carbon ferritic–bainitic/martensitic dual-phase steel
https://orcid.org/http://orcid.org/0000-0001-7179-0052
A simple heat treatment of austenitization followed by austempering was proposed to obtain ferritic–bainitic/martensitic dual-phase (DP) microstructure with ~ 18% bainite and ~ 30% martensite in low-carbon steel, which provides a promising way for processing of low-cost high-performance advanced high-strength steels (AHSSs) with improved strength–ductility trade-off, tensile toughness, and fracture behavior. The processed bainite-aided DP steel exhibited high yield stress and high ultimate tensile strength while maintaining high total elongation to failure, which were beyond the expected trends for conventional steels, ferritic–martensitic DP steels, and ferritic–bainitic DP steels. The continuous yielding behavior (with the disappearance of the yield point phenomenon) and more ductile fracture surface appearance were also remarkable. Accordingly, besides grain refinement by cold rolling and intercritical annealing, the present work proposed an alternative way for processing high-performance DP steels.
Tailoring the mechanical properties of austempered low-carbon ferritic–bainitic/martensitic dual-phase steel
Archiv.Civ.Mech.Eng
Motallebi, Reza (Autor:in) / Mirzadeh, Hamed (Autor:in)
18.11.2022
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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