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Analysis of the microstructure of 37MnMo6-3 hypoeutectoid steel

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Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Purpose: Present work corresponds to the research on the analysis of the microstructure of 37MnMo6-3 hypoeutectoid steel. Own research concerns the analysis of the influence of austenitizing temperature on the hardness of the 37MnMo6-3 hypoeutectoid test steel, and on the grain size of former austenite. The paper presents metallographic research, measurements of the average diameter of austenite grain, as well as hardness measurements. Design/methodology/approach: The austenitising temperature was defined in a standard way i.e. 30-50°C higher than Ac3 temperature for model alloy. A technique of full annealing was proposed for the model alloy. Metallographic examinations were performed on a Carl Zeiss light microscope Axiovert 200 MAT. Hardness measurements was performed with a Vickers apparatus of HPO 250 type, which imposes a force equal to 30 kG. Findings: Material for investigations was 37MnMo6-3 steel delivered in as-cast condition after casting in the Faculty of Foundry Engineering of AGH University of Science and Technology in Cracow then reforged in INTECH-MET S.C. in Gliwice. Research limitations/implications: The new Mn-Mo iron based model alloy. Practical implications: The paper contains a description of one from a group of iron based model alloys with 0.35-0.40% carbon content. According to PN-EN 10027 standard this steel should have a symbol 38MnNi6-4.
Rocznik
Strony
125--129
Opis fizyczny
Bibliohr. 14 poz.
Twórcy
autor
  • Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, Al. A. Mickiewicza 30, 30-059 Kraków, Poland
autor
  • Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, Al. A. Mickiewicza 30, 30-059 Kraków, Poland
Bibliografia
  • [1] J. Pacyna, Chemical composition and steel structures design, Faculty of Metal Engineering and Industrial Computer Science AGH, Cracow, 1997 (in Polish).
  • [2] J. Pacyna, Chemical composition and steel structures design, Metallurgy-Metallurgical Engineering News 72/4 (2005) 224-232 (in Polish).
  • [3] J. Pacyna, E. Rożniata, Effect of annealing on structure and properties of ledeburitic cast steel, Journal of Achievements in Materials and Manufacturing Engineering 24/1 (2007) 84 90.
  • [4] B. Smoljan, Computer simulation of microstructure transformation in heat treatment processes, Journal of Achievements in Materials and Manufacturing Engineering 24/1 (2007) 275-282.
  • [5] M. Jabłońska, E. Bernstock, A. Jasik, Microstructure and mechanical properties of intermetallics on the base of Fe-Al alloy obtained by casting, Archives of Materials Science and Engineering 28 (2007) 625-628.
  • [6] G. Niewielski, D. Kuc, I. Schindler, I. Bednarczyk, Hot rolling of intermetallics FeAl phase based alloys, Archives of Materials Science and Engineering 29 (2008) 117-120.
  • [7] R. Dąbrowski, J. Pacyna, J. Krawczyk, New high hardness Mn-Cr-Mo-V tool steel, Archives of Metallurgy and Materials 52/1 (2007) 87-92.
  • [8] J. Jech, Heat treatment of steel, Metalurgija, Moskva, 1979 (in Russia).
  • [9] P. Bała, J. Pacyna, J. Krawczyk, The kinetics of phase transformations during tempering of Cr-Mo-V medium carbon steel, Journal of Achievements in Materials and Manufacturing Engineering 20 (2007) 79-82.
  • [10] J. Nowacki, Phosphorus in iron alloys surface engineering. Journal of Achievements in Materials and Manufacturing Engineering 24 (2007) 57-67.
  • [11] A. Jędrzejewska-Strach, Influence of magnesium on the kinetics of phase transformations, structure and proprieties of model structural steel alloys, Ph.D. Thesis, AGH University of Science and Technology, Cracow, 1995 (in Polish).
  • [12] K. Ziewiec, K. Bryła, A. Ziewiec, K. Prusik, The microstructure and properties of a new Fe41Ni39P10Si5B5 glass forming alloy, Archives of Materials Science and Engineering 34/1 (2008) 35-38.
  • [13] P. Bała, J. Pacyna, J. Krawczyk, The kinetics of phase transformations during the tempering of HS6-5-2 steel, Archives of Materials Science and Engineering 35 (2009) 69-76.
  • [14] R. Dziurka, J. Pacyna, The influence of carbon content on the kinetics of phase transformations of undercooled austenite of the Cr-Mn-Mo model alloys, Archives of Materials Science and Engineering 47 (2011) 77-84.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-6c571a45-f435-4a4a-8fea-9621688e9f05
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