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S. Byelikov, I. Volchok and V. Netrebko

). [5] Structurally and non-structurally sensitive properties of chromium cast irons / A.A. Kirillov [and oth.] // Chernyemetally. -2007. - September. - P. 7-13. (in Russian). [6] I.P. Volchok, V.V. Netrebko, Manganese influence on the structure formation processes of wear-resistant cast irons // Stroitelstvo, materialovedenie, mashinostroenie: Compilation of scientific works. Vol. 64 - Dnepropetrovsk, PGASA, 2012. - P. 301-304. (in Russian). [7] A.P. Gulyaev, Metal Science. - M.: Metallurgiya, 1978. -647 p. (in Russian).

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M. Holtzer, A. Bobrowski, D. Drożyński and J. Mocek

References [1] A. Chojecki, I. Telejko, Cracks in high-manganese cast steel, Archives of Foundry Engineerig 9, 4, 17-22 (2009). [2] A. Modrzyński, Manufacture of heavy-walled casts from Hadfield’s cast steel. Archives of Foundry Engineering, KMi S nr 43/42. [3] P. Skoczylas, A. Krzyńska, M. Kaczorowski, The comparative studies of ADIversus Hadfield cast steel wear resistance. Archives of Foundry Engineerig 11, 2, 123-12 (2011). [4] Z. Stradomski, M.S. Soiński, Increasing functional

Open access

M.B. Jabłońska

Abstract

Since few years many research centres conducting research on the development of high-manganese steels for manufacturing of parts for automotive and railway industry. Some of these steels belong to the group of AHS possessing together with high strength a great plastic elongation, and an ideal uniform work hardening behavior. The article presents the dynamic mechanical properties of two types of high manganese austenitic steel with using a flywheel machine at room temperature with strain rates between 5×102÷3.5×103s?–1. It was found that the both studied steels exhibit a high sensitivity Rm to the strain rate. With increasing the strain rate from 5×102 to 3.5×103s?–1 the hardening dominates the process. The fracture analysis indicate that after dynamic test both steel is characterized by ductile fracture surfaces which indicate good plasticity of investigated steels.

Open access

M. Witkowska, A. Zielińska-Lipiec, J. Kowalska and W. Ratuszek

. 16 , 1391-1409 (2000). [4] G. Frommeyer, U. Brüx, Microstructures and mechanical properties of high-strength Fe-Mn-Al-C light-weight TRIPLEX steels, Steel Research Int. 77 , 627-633 (2006). [5] L.A. Dobrzański, A. Grajcar, W. Borek, Microstructure evolution and phase composition of high-manganese austenitic steels, Journal of Achievements in Materials and Manufacturing Engineering 31 , 218-225 (2008). [6] J. Kowalska, W. Ratuszek, M. Witkowska, A. Zielińska-Lipiec, Influence of cold plastic deformation on the development of the texture in high-manganese

Open access

M. Tenerowicz and M. Sułowski

, (24), 71001-1009 (2012). [11] M. Sułowski, Powder Metallurgy 53 , (2), 125-140 (2010). [12] Ch. Fiał, E. Dudrová, M. Kabátová, M. Kupková, M. Selecká, M. Sułowski, A. Ciaś, Powder Metallurgy Progress 15, special issue, 124-129 (2015). [13] Ch. Fiał, E. Dudrová, M. Kabátová, M. Kupková, M. Selecká, M. Sułowski, A. Ciaś, Powder Metallurgy Progress 14 , (3), 137–147 (2014). [14] A. Ciaś, Science of Sintering 47 , (1), 61-69 (2015) [15] P. Hebda. Sinteraustempering of manganese steels sintered in 1120°C. Master Thesis, AGH, Cracow, 2014

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J. Lacaze, J. Sertucha, P. Larrañaga and R. Suárez

Abstract

Copper, manganese and tin are commonly used as pearlite promoter elements in cast irons. A number of studies have been aimed at quantitatively evaluate the effect of each of these elements, individually or at given levels of the others. As a matter of fact, while tin may be necessary for achieving a fully pearlitic matrix, it is known that when in excess it is detrimental for mechanical properties. As the pearlite promoting effect of each of those elements is totally different, it is of real interest to know the optimum combination of them for a given cooling rate. The present report is a first part of a work dedicated at characterizing the best alloying levels in terms of room temperature mechanical properties of as-cast pearlitic materials.

Open access

M. Kupková, M. Hrubovčáková, A. Zeleňák, M. Sułowski, A. Ciaś, R. Oriňáková, A. Morovská Turoňová, K. Žáková and M. Kupka

Abstract

Iron samples and Fe-Mn alloys with Mn content of 25 wt.% and 30 wt.% were prepared by blending, compressing and sintering with the aim to study their dimensional changes, microstructure, microhardness distribution and primarily the electrochemical corrosion behaviour in a simulated body environment.

The light microscopy (LM), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX) and micro-hardness measurements revealed a microheterogeneous multiphase structure of sintered Fe-Mn samples. The potentiodynamic tests have demonstrated that the corrosion rates of such Fe-Mn alloys immersed in Hank’s solution were higher than those for a pure iron, and also higher than the rates reported for homogeneous Fe-Mn alloys.

Open access

M.B. Jabłońska, A. Śmiglewicz and G. Niewielski

REFERENCES [1] A.S. Hamada, Universitatis Ouluensis, Manufacturing, mechanical properties and corrosion behaviour of High-Mn TWIP steels, Oulu 2007. [2] B.C. De Cooman, L. Chen, S.H. Kim, Y. Estrin, S.K. Kim, H. Voswinckel, State of the Science of High Manganese TWIP Steels for Automotive Applications, Chapter 10. [3] D. Kuc, E. Hadasik, G. Niewielski, I. Schindler, E. Mazancová, S. Rusz, P. Kawulok, Arch. Civ. Mech. Eng. 12 , 312-317 (2012). [4] A. Kokosza, J. Pacyna, Arch. of Metal. And Mater. 59 , 1017-1022 (2014). [5] S

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I. Kuźniarska-Biernacka, A. Lisinska-Czekaj, D. Czekaj, M. José Alves, A. Mauricio Fonseca and I. Correia Neves

Abstract

The manganes(III) complex functionalised with 2,3-dihydropyridazine has been encapsulated in the supercages of the NaY zeolite using two different procedures, flexible ligand and in situ complex. The parent zeolite and the encapsulated manganese(III) complexes were screened as catalysts for styrene oxidation by using t-BOOH as the oxygen source in acetonitrile. Under the optimized conditions, the catalysts exhibited moderate activity with high selectivity to benzaldehyde

Open access

L. Blacha, R. Burdzik, A. Smalcerz and T. Matuła

resistance of OT-4-0 titanium alloy in 0.9% NaCl environment, Surface & Coatings Technology 111 (1), 86-91 (1999). [12] A.I. Kostov, D.T. Zivkovic, Thermodynamic calculations in ternary titanium-aluminium-manganese system, Journal of the Serbian Chemical Society 73 (4), 499-506 (2008). [13] L. Blacha, J. Łabaj, Factors determining the rate of the process of metal bath components evaporation, Metalurgija 51 (4), 529-533 (2012). [14] R. Przyłucki, S. Golak, B. Oleksiak, L. Blacha, Influence of an induction furnace’s electric