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The Effect of CaSiAl Modification on the Non-metallic Inclusions and Mechanical Properties of Low-carbon Microalloyed Cast Steel

Treść / Zawartość
Identyfikatory
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
The effect of CaSiAl modification (43-49% Ca, 43-48% Si, 2% Al) on the non-metallic inclusions and mechanical properties of cast low-carbon steel is discussed. Tests were carried out on the cast steel with 0.2% C and micro-additives of V and Nb, used mainly for heavy steel castings (e.g. slag ladles). The modifier in an amount of 1.5 and 3 kg / Mg was introduced to the liquid steel before tapping the metal into a ladle. Test ingots of Y type and a weight of 10 kg were cast and then subjected to a normalizing heat treatment. Using light microscopy and scanning electron microscopy, qualitative and quantitative evaluation of the non-metallic inclusions present in as-cast samples was carried out. Additionally, tests of mechanical strength and impact strength were performed on cast steel with and without the different content of modifier. It was found that increasing the modifier addition affected impact strength but had no significant effect on tensile strength and yield strength. The material with high impact strength had the smallest area fraction of non-metallic inclusions in the microstructure (0.20%). The introduction of modifiers changed the morphology of non-metallic inclusions from dendritic to regular and nodular shapes.
Rocznik
Tom
Strony
47--52
Opis fizyczny
Bibliogr. 13 poz., rys., tab., wykr.
Twórcy
autor
  • AGH University of Science and Technology, Faculty of Foundry Engineering, Krakow, Poland
autor
  • AGH University of Science and Technology, Faculty of Foundry Engineering, Krakow, Poland
autor
  • AGH University of Science and Technology, Faculty of Foundry Engineering, Krakow, Poland
autor
  • AGH University of Science and Technology, Faculty of Foundry Engineering, Krakow, Poland
Bibliografia
  • [1] Chen, G., He, S., Guo, Y., Shen, B., Zhao, S. & Wang, Q. (2015). Optimization of calcium addition to high-strength low-alloy steels. Journal of Iron and Steel Research. 22(7), 590-597. DOI: 10.1016/S1006-706X(15)30044-3.
  • [2] Holappa, L.E.K.& Helle, A.S. (1995). Inclusion control in high – performance steels. Journal of Materials Processing Technology. 53(1-2), 177-186. DOI: 10.1016/0924-0136(95)01974-J.
  • [3] Han, Z.J., Liu, L., Lind, M. & Holappa, L. (2006). Mechanism and kinetics of transformation of alumina inclusions by calcium treatment. Acta Metallurgica Sinica (English Letters). 19(1), 1-8. DOI: 10.1016/S1006-7191(06)60017-3.
  • [4] Kasińska, J. (2017). Effects of rare earth metal addition on wear resistance of chromium-molybdenum cast steel. Archives of Foundry Engineering. 17(3) 63-68. DOI:10.1515/ afe-2017-0092.
  • [5] Lis, T. (2009). Modification of oxygen and sulphur inclusions in steel by calcium treatment. Metalurgija. 48(2), 95-98. ISSN 0543-5846.
  • [6] Kalandyk, B., Sierant, Z. & Sobula, S. (2009). Improvement of the microstructure, yield stress and impact toughness of medium carbon steel by vanadium additions. Przegląd Odlewnictwa (Foundry Journal of the Polish Foundrymen’ts Association). 58(3), 108-113.
  • [7] Najafi, H., Rassizadehghani, J. & Asgari, S. (2008). As-cast mechanical properties of vanadium/niobium microalloyed steel. Materials Science and Engineering A. 486(1-2), 1-7. DOI: 10.1016/j.msea.2007.08.057.
  • [8] Głownia, J. & Kalandyk, B. (2008). Effect of precipitation strengthening in low alloyed Mn-Ni cast steels. Journal of Materials Processing Technology. 207(1-3), 147-153. DOI: 10.1016/j.jmatprotec.2007.12.097.
  • [9] Lazarova, R., Petrov, R.H., Gaydarova, V., Davidkov, A., Alexeev, A., Manchev, M. & Manolov, V. (2011). Microstructure and mechanical properties of P265GH cast steel after modification with TiCN particles. Materials & Design. 32(5) 2734-2741. DOI:10.1016/j.matdes.2011. 01.024.
  • [10] Zhu, H., Ke, W., Zhao, Z., Qin, S., Xiao, F. & Liao, B. (2018). Refinement effectiveness of self-prepared (NbTi)C nanoparticles on as-cast 1045 steel. Materials & Design. 139(5), 531-540. DOI: 10.1016/j.matdes.2017.11.038.
  • [11] Park, J.J., Hong, S.M., Park, E.K., Kim, K.Y., Lee, M.K. & Rhee, Ch. K. (2014). Microstructure and properties of SA 106B carbon steel after treatment of the melt with nano-sized TiC particles. Materials Science and Engineering A. 613(8), 217-223. DOI: 10.1016/j.msea.2014.06.103.
  • [12] Steinmetz, E. & Lindenberg, H.-U. (1976). Einfluß von Kohlenstoff, Silicium und Aluminium auf die Morphologie der Sulfide in Eisenwerkstoffen. Arch. Eisenhűttenwes. 47(12), 713-718. DOI: 10.1002/srin.197603757.
  • [13] Yang J., Wang X., Jiang M. & Wang W. (2011). Effect of calcium treatment on non-metallic inclusions in ultra-low oxygen steel refined by high basicity high A1203 slag. Journal of Iron and Steel Research, International. 18(7), 8-14. DOI: 10.1016/S1006-706X(11)60083-6.
Uwagi
PL
Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-afc3ce2e-7f0a-4d34-a8d3-b09f73860a66
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