Effect of C Content on Microstructure and Mechanical Properties of Nb-V Added Microalloyed Steel Produced by Powder Metallurgy Method

Öz

In this work, the effect of C content on the microstructures and tensile behaviors of Nb-V added microalloyed powder metallurgy (PM) steels were investigated. The samples pressed at 700 MPa and sintered at 1450°C temperature in the sintering argon atmosphere for 1 h were produced. Nb-V added PM microalloyed steels with different carbon ratio were analyzed in terms of tensile test. Results indicated that the images of microstructure that as the proportion of the C in the PM samples increases, the volume of the perlite gets increase gradually and 0.35 wt. % C added Nb-V PM steel showed the highest values in yield strength (YS) and ultimate tensile strength (UTS).

Anahtar Kelimeler

• Powder metallurgy,powder metallurgy steels,Nb-V,Microstructure

References

1. Erden, M.A., Gündüz, S., Karabulut, H., Türkmen, M., 2016. Effect of V Addition on the Microstructure and Mechanical Properties of Low Carbon Microalloyed Powder Metallurgy Steels. Meterials Testing, 58, 5, 433-437.
2. Erden, M.A., Gündüz, S., Karabulut, H., Türkmen, M., 2014. Microstructural characterization and mechanical properties of microalloyed powder metallurgy steels. Materials Science and Engineering A, 616, 201-206.
3. Erden, M.A., Gökçe, H. 2016. The Effect of Sintering Atmosphere on Mechanical Properties of Nb-V Bsaed Microalloy Steels Produced by Powder Metallurgy Method. SYLWAN, 160(8), 362-375.
4. Gladman T. 1997. The physical metallurgy of microalloyed steels, 1st ed., The University Press, Cambridge.
5. Gladman, T. and Woodhead, J. H. 1960. The accuracy of point counting in metallographic investigations, Journal of the Iron Steel, 194, 189.
6. Misra R. D. K., Tenneti K. K., Weatherly G. C., 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.
7. Rahimian M., Parvin N. and Ehsani N., 2011. The effect of production parameters on microstructure and wear resistance of powder metallurgy Al-Al2O3 composites, Materials and Design, 32, 1031-1038.
8. Sage A. M., The Effect of Some Variations in Composition on the Properties of Vanadium Forging Steels, Conference Proceedings of Fundamentals of Microalloying Forging Steels, 8-10 July 1986, pp. 239-253, Colorado, USA.

9. Schade C, Murphy T, Lawley A, Doherty R. 2012. Microstrucure and mechanical properties of microalloyed PM steels, Int J of Powder Metall. 48: 51-59.
10. Schade, C., Murphy, T., Lawley A., Doherty R., 2012. Microstructure and mechanical properties of PM steels alloyed with silicon and vanadium”, International Journal of Powder Metallurgy, 48 (6): 41-48.
11. Wang J., Wang Y. and Ding Y., 2008. Reaction synthesis of Fe-(Ti, V) C composites”, Journal of Materials Processing Technology, 197, 54-58.
12. Xiang-done H., Xin-ping M, Sheng-xia L. 2013. Effect of annealing temperature on recrystallization behavior of cold rolled Ti-microalloyed steel, J. of Iron and Steel Res Int., 20 (9): 105-110.