Effect of Boron in Cold Rolled DP Steels; Fundamentals of Metallurgy & General Property Map

• Autorzy: Özyi̇ği̇t Mehmet Bulut , Hayat Fatih , Kiliç Yasemin , Gündüz Oguz

Identyfikatory

DOI

10.24425/amm.2024.150912

• Języki publikacji: EN

Abstrakty

EN

Dual-phase (DP) steels with their dual phase microstructures (hard martensite and soft ferrite) are used in many industrial applications, especially in the automotive industry, thanks to their desired mechanical properties and formability. These properties are directly related to their phase distribution in microstructure obtained as a result of the production conditions. The most important step of the production of cold rolled DP steels is the annealing process. In this study, the effect of boron alloying with line scale heat treatment cycle on the microstructure and mechanical properties of cold rolled DP steel was investigated. For this purpose, mechanical test, formability and weldability tests were carried out. The materials were characterized by optical microscopy (OM) and scanning electron microscopy (SEM/EBSD) studies. According to the results, alloying with boron delays the formation of ferrite and pearlite/bainite during the cooling process and increases the martensite formation rate. Boron alloyed cold rolled DP steel shows improved yield and tensile strength without significant loss of elongation. On the other hand, alloying with boron does not have a detrimental effect on the weld properties.

Słowa kluczowe

EN

boron alloying; inter-critical annealing; DP steels; microstructure; mechanical testing

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2024
• Tom: Vol. 69, iss. 3
• Strony: 923--932
• Opis fizyczny: Bibliogr. 36 poz., fot., rys., tab.

Twórcy

autor

Özyi̇ği̇t Mehmet Bulut

• Eregli Iron and Steel Works Co., R&D Center of ERDEMIR , Zonguldak/Turkey
• Karabuk University, Metallurgical and Material Science Engineering, Karabük/Turkey

• https://orcid.org/0000-0002-4547-7393

autor

Hayat Fatih

• Karabuk University, Metallurgical and Material Science Engineering, Karabük/Turkey

• https://orcid.org/0000-0003-4611-9595

autor

Kiliç Yasemin

• Eregli Iron and Steel Works Co., R&D Center of ERDEMIR , Zonguldak/Turkey

• https://orcid.org/0000-0001-7579-5424

autor

Gündüz Oguz

• Eregli Iron and Steel Works Co., R&D Center of ERDEMIR , Zonguldak/Turkey

• https://orcid.org/0000-0002-6464-111X

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