The Effect of Sintering Time on Tensile Strength of NB-V Microalloyed Powder Metallurgy Steels

Yıl 2020, Cilt 15, Sayı 1, 15 - 22, 18.01.2020

Mehmet Akif ERDEN

Öz

Microalloyed steels can be defined as low alloyed high strength steels which increase the strength of steel by mechanisms such as precipitation hardening, aggregation hardening, particle size reduction, dispersion hardening by adding microalloy elements such as aluminium, niobium, vanadium and titanium in the range of 0.05% and 0.20%. Powder metallurgy is one of the manufacturing methods in which small parts which are difficult to manufacture can be produced in series with some parts which are close to the final shape with minimum material loss and which cannot be produced by other production methods. In this work, effect of different sintering time (1h., 2h. and 3h.) on the tensile strength of powder metallurgy (PM) plain carbon steel and microalloyed steels with different amount of niobium and vanadium content (0-0.1-0.2 wt%) were investigated. As a result, it was determined that the added alloying elements increased the mechanical properties. 0.2 wt % Nb-V added and sintered 2 h. PM steel showed the highest values in yield strength (YS), ultimate tensile strength (UTS).  

Anahtar Kelimeler

Powder Metallurgy, Nb-V Microalloyed Steels, Microstructure, Tensile Test, Sintering Time

Öz

Kaynakça

• [1] Alzahougi, A., Elitaş, M. and Demir, B., (2018). RSW Junctions of Advanced Automotive Sheet Steel by Using Different Electrode Pressures. Engineering, Technology & Applied Science Research, 8(5):3492-3495.
• [2] Ahlatci, H., Yargül, G., Çuğ, H., Cevik, E., Yaşin, S. and Sun, Y., (2013). Corrosion and Wear Behaviour of Boronized high Carbon and Chromium Cast Steel. ISIJ International, Vol. 53(5):887–893.
• [3] Özdemirler, D., Gündüz, S. and Erden, M.A., (2017). Influence of NbC addition on the sintering behaviour of medium carbon PM steels. Metals. 7(4):121-132.
• [4] Gündüz, S., Erden, M.A., Karabulut, H. and Türkmen, M., (2016). The effect of vanadium and titanium on mechanical properties of microalloyed PM steel. Powder Metallurgy and Metal Ceramics, 55(5-6):277-287.
• [5] Erden, M.A., (2017). The Effect of the Sintering Temperature and Addition of Niobium and Vanadium on the Microstructure and Mechanical Properties of Microalloyed PM Steels. Metals, 7, 329.
• [6] Gladman, T., (1997). The Physical Metallurgy of Microalloyed Steels. The Institue of Materials, 1-341, England.
• [7] Karabulut, H., Erden, M.A., Özkurt, E., Tanrıverdi, A., Yılmaz, A., Türkmen, M. and Gündüz, S., (2016). Investigation of The Effect of Carbon Content on Microstructure and Mechanical Properties of AlC Added Powder Metallurgy Steels. Technological Applied Sciences, 11(4):139-145.
• [8] German, R.M., (2005). Powder Metallurgy and Particulate Materials Processing. MPIF Publications, Princeton, New Jersey.
• [9] Türkmen, M., Erden, M.A., Karabulut, H. and Gündüz, S., (2017). Effect of TiN Addition on The Microstructure and Mechanical Properties of PM Steels. Technological Applied Sciences. 12(4):178-184.
• [10] Erden, M.A., Gündüz, S., Karabulut, H. and Türkmen, M., (2014). Microstructural Characterization and Mechanical Properties of Microalloyed Powder Metallurgy Steels. Materials Science and Engineering, 616:201-206.
• [11] Misra, R.D.K., Tenneti, K.K., Weatherly, G.C. and Tither G., (2003). Microstructure and Texture of Hot Rolled Cb-Ti and V-Cb Microalloyed Steels with Differences in Formability and Toughness. Metall. Mater. Trans. A, 34A: 2341–2351.
• [12] Erden, M.A., (2018). Wear Behaviour of Sintered Nb-V Microalloyed Powder Metallurgy Steel. International Congress on Mathematic, Engineering, Natural & Health Sciences-IV, 197-206, Kiev-Ukraine.
• [13] Siwecki, T., Sandberg, A. and Roberts, W., (1984). Technology and Applications of HSLA Steels. Metals Park, OH, ASM, 1-15.