Tailoring the mechanical properties of austempered low‑carbon ferritic-bainitic/martensitic dual‑phase steel

• Autorzy: Motallebi Reza , Mirzadeh Hamed

Identyfikatory

DOI

10.1007/s43452-022-00572-9

• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

advanced high strength steels; dual phase steel; heat treatment; intercritical annealing

PL

stal o wysokiej wytrzymałości; stal dwufazowa; obróbka cieplna; wyżarzanie międzykrytyczne

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2023
• Tom: Vol. 23, no. 1
• Strony: art. no. e32, 2023
• Opis fizyczny: Bibliogr. 42 poz., rys., wykr.

Twórcy

autor

Motallebi Reza

• School of Metallurgy and Materials Engineering, College of Engineering, University of Tehran, P.O. Box 11155‑4563, Tehran, Iran

autor

Mirzadeh Hamed

• School of Metallurgy and Materials Engineering, College of Engineering, University of Tehran, P.O. Box 11155‑4563, Tehran, Iran

• https://orcid.org/0000-0001-7179-0052

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Uwagi

PL

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023)