Microstructure of Cast High-Manganese Steel Containing Titanium

• Autorzy: Tęcza G. , Garbacz-Klempka A.
• Języki publikacji: EN

Abstrakty

EN

Widely used in the power and mining industry, cast Hadfield steel is resistant to wear, but only when operating under impact loads. Components made from this alloy exposed to the effect of abrasion under load-free conditions are known to suffer rapid and premature wear. To increase the abrasion resistance of cast high-manganese steel under the conditions where no dynamic loads are operating, primary titanium carbides are formed in the process of cast steel melting, to obtain in the alloy after solidification and heat treatment, the microstructure composed of very hard primary carbides uniformly distributed in the austenitic matrix of a hardness superior to the hardness of common cast Hadfield steel. Hard titanium carbides ultimately improve the wear resistance of components operating under shear conditions. The measured microhardness of the as-cast matrix in samples tested was observed to increase with the increasing content of titanium and was 380 HV0.02 for the content of 0.4%, 410 HV0.02 for the content of 1.5% and 510 HV0.02 for the content of 2 and 2.5%. After solution heat treatment, the microhardness of the matrix was 460÷480 HV0.02 for melts T2, T3 and T6, and 580 HV0.02 for melt T4, and was higher than the values obtained in common cast Hadfield steel (370 HV0.02 in as-cast state and 340÷370 HV0.02 after solution heat treatment). The measured microhardness of alloyed cementite was 1030÷1270 HV0.02; the microhardness of carbides reached even 2650÷4000 HV0.02.

Słowa kluczowe

EN

innovative foundry technology; innovative foundry material; cast high manganese steel; primary carbides; microhardness

PL

innowacyjna technologia odlewnicza; innowacyjny materiał odlewniczy; stal wysokomanganowa; węgliki pierwotne; mikrotwardość

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2016
• Tom: Vol. 16, iss. 4
• Strony: 163--168
• Opis fizyczny: Bibliogr. 13 poz., rys., tab., wykr.

Twórcy

autor

Tęcza G.

• Department of Cast Alloys and Composites Engineering, Faculty of Foundry Engineering, AGH University of Science and Technology, Reymonta 23 Str., 30-059 Kraków, Poland

autor

Garbacz-Klempka A.

• Department of Moulding Materials, Mould Technology and Cast Non-Ferrous Metals, Faculty of Foundry Engineering, AGH University of Science and Technology, Reymonta 23 Str., 30-059 Kraków, Poland

Bibliografia

• [1] Kniaginin, G. (1968). Austenitic manganese cast steel. Kraków: PWN. (in Polish).
• [2] Smith, R.W., DeMonte, A. & Mackay W.B.F. (2004). Development of high-manganese steels for heavy duty cast-to-shape applications. Journal of Materials Processing Technology. 153-154, 589-595.
• [3] Głownia, J. (2002). Castings alloy steel - application. Kraków: Fotobit. (in Polish).
• [4] Głownia, J., Kalandyk, B., Furgał, G. (1999). Characteristics of cast steel alloy. Kraków: Wyd. AGH, Skrypt SU1569. (in Polish).
• [5] Telejko, I. (2004). The fragility of the steel in the temperature range of the solid-liquid. Kraków: Wyd. Naukowe Akapit. (in Polish).
• [6] Krawiarz, J. & Magalas, L. (2005). Hadfield modified cast steel with increased resistance to abrasion. Przegląd Odlewnictwa. 10, 666-672. (in Polish).
• [7] Tęcza, G., Głownia, J. & Rąpała, M. (2008). The phenomenon of segregation in thick-walled castings with cast Hadfield, Przegląd Odlewnictwa. 1-2, 10-15. (in Polish).
• [8] Sobula, S. & Tęcza, G. (2009). Hadfield steel microstructure stabilization at elevated temperature in the presence of chromium. Przegląd Odlewnictwa. 3, 132-137. (in Polish).
• [9] Sobula, S., Tęcza, G., Rąpała, M., Stańczak, S. & Głownia, J. (2008). The effects of supersaturating cast Hadfield in polymers. Przegląd Odlewnictwa. 7-8, 378-382. (in Polish).
• [10] Kalandyk, B. & Zapała, R. (2013). Effect of high-manganese cast steel strain hardening on the abrasion wear resistance in a mixture of SiC and water. Archives of Foundry Engineering. 13(4), 63-66.
• [11] Głownia, J., Asłanowicz, M. & Ościłowski, A. (2013). Tools cast from the steel of composite structure. Archives of Metallurgy and Materials. 58(3), 803-808.
• [12] Tęcza, G. & Sobula, S. (2014). Effect of heat treatment on change microstructure of cast high-manganese hadfield steel with elevated chromium content. Archives of Foundry Engineering. 14(3), 67-70.
• [13] Tęcza, G. & Głownia, J. (2015). Resistance to abrasive wear and volume fraction of carbides in cast high-manganese austenitic steel with composite structure. Archives of Foundry Engineering. 15(4), 129-133.

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.