Scopus
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The effect of nickel on the microstructure, mechanical properties and corrosion properties of niobium-vanadium microalloyed powder metallurgy steels
Materials · Eylül 2020
Makale Bilgileri
DergiMaterials
Yayın TarihiEylül 2020
Cilt / Sayfa13
Scopus ID2-s2.0-85091237939
Erişim🔓 Açık Erişim
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.
Yazarlar (4)
1
Mohamed Ahmed Mohamed Ahssi
2
Mehmet Akif Erden
3
Mustafa Acarer
4
Harun Çuğ
Anahtar Kelimeler
Corrosion
Mechanical properties
Microalloyed steel
Microstructure
Nickel addition
Powder metallurgy
Kurumlar
Karabük Üniversitesi
Karabuk Turkey
Selçuk Üniversitesi
Selçuklu Turkey
Metrikler
31
Atıf
4
Yazar
6
Anahtar Kelime