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The Effect of Nickel on the Microstructure, Mechanical Properties and Corrosion Properties of Niobium–Vanadium Microalloyed Powder Metallurgy Steels        
Yazarlar (4)
Mohamed Ahmed Ahssi
Türkiye
Prof. Dr. Mehmet Akif ERDEN Prof. Dr. Mehmet Akif ERDEN
Karabük Üniversitesi, Türkiye
Mustafa Acarer
Selçuk Üniversitesi, Türkiye
Doç. Dr. Harun ÇUĞ Doç. Dr. Harun ÇUĞ
Karabük Üniversitesi, Türkiye
Devamını Göster
Özet
In this study, the effects of adding Ni in different ratios to Fe-matrix material containing C-Nb-V produced by powder metallurgy on microstructure, tensile strength, hardness and corrosion behaviors were investigated. Fe-C and Fe-C-Nb-V powders containing 5%, 10%, 13%, 15%, 20%, 30% and 40% nickel were pressed at 700 MPa and then sintered in an Ar atmosphere at 1400 °C. Microstructures of the samples were characterized with optical microscope, scanning electron microscope (SEM) and XRD. Corrosion behaviors were investigated by obtaining Tafel curves in an aqueous solution containing 3.5% NaCl. Mechanical properties were determined by hardness and tensile testing. While Fe-C alloy and Fe-C-Nb-V microalloyed steel without Ni typically have a ferrite-pearlite microstructure, the austenite phase has been observed in the microstructures of the alloys with 10% nickel and further. Yield and tensile strength increased with nickel content and reached the highest strength values with 13% Ni content. The addition of more nickel led to decrease the strength. Analysis of Tafel curves showed that corrosion resistance of alloys increased with increasing nickel concentration.
Anahtar Kelimeler
Corrosion | Mechanical properties | Microalloyed steel | Microstructure | Nickel addition | Powder metallurgy
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı MATERIALS
Dergi ISSN -
Dergi Tarandığı Indeksler SCI-Expanded
Dergi Grubu Q2
Makale Dili İngilizce
Basım Tarihi 09-2020
Cilt No 13
Sayı 18
Sayfalar 4021 / 0
Doi Numarası 10.3390/ma13184021