Changes in Impact Strength and Abrasive Wear Resistance of Cast High Manganese Steel Due to the Formation of Primary Titanium Carbides

• Autorzy: Tęcza G. , Zapała R.

Identyfikatory

DOI

10.24425/118823

• Języki publikacji: EN

Abstrakty

EN

Cast high-manganese Hadfield steel is commonly used for machine components operating under dynamic load conditions. Their high fracture toughness and abrasive wear resistance is the result of an austenitic structure, which - while being ductile - at the same time tends to surface harden under the effect of cold work. Absence of dynamic loads (e.g. in the case of sand abrasion) causes rapid and premature wear of parts. In order to improve the abrasive wear resistance of cast high-manganese steel for operation under the conditions free from dynamic loads, primary titanium carbides are produced in this cast steel during melting process to obtain in castings, after melt solidification, the microstructure consisting of an austenitic matrix and primary carbides uniformly distributed therein. After heat treatment, the microhardness of the austenitic matrix of such cast steel is up to 580 μHV20 and the resulting carbides may reach even 4000 μHV20. The impact strength of this cast steel varies from 57 to 129 and it decreases with titanium content. Compared to common cast Hadfield steel, the abrasive wear resistance determined in Miller test is at least twice as high for the 0.4% Ti alloy and continues growing with titanium content.

Słowa kluczowe

EN

high-manganese steel; microstructure; primary carbides; microhardness; impact strength; abrasion

PL

stal wysokomanganowa; mikrostruktura; węgliki; mikrotwardość; siła uderzenia

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2018
• Tom: Vol. 18, iss. 1
• Strony: 119--122
• Opis fizyczny: Bibliogr. 10 poz., rys., tab.

Twórcy

autor

Tęcza G.

• AGH University of Science and Technology, Faculty of Foundry Engineering, Kraków, Poland

autor

Zapała R.

• AGH University of Science and Technology, Faculty of Foundry Engineering, Kraków, Poland

Bibliografia

• [1] Tęcza, G. & Garbacz-Klempka, A. (2016). Microstructure of cast high-manganese steel containing titanium. Archives of Foundry Engineering. 16(4), 163-168.
• [2] Fuoco, R., Todorov D., Cavalcanti, A.H. & Santos, N.L. (2012). Effect of chemical composition on the carbide reprecipitation kinetics of hadfield austenitic manganese steel. Transactions of the American Foundry Society. 120, 507-522.
• [3] Kniaginin, G. (1968). Cast austenitic manganese steel. Kraków: PWN. (in Polish).
• [4] Malkiewicz, T. (1976). Metal science. Warszawa-Kraków: PWN. (in Polish).
• [5] 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.
• [6] Głownia, J. (2002). Alloy steel castings - applications. Kraków: Fotobit.
• [7] Głownia, J., Kalandyk, B., Furgał, G. (1999). Characteristics of alloy steel castings. Kraków: Wyd. AGH, Skrypt SU1569.
• [8] Telejko, I. (2004). Brittleness of cast steel in semi-solid state. Kraków: Wyd. Naukowe Akapit.
• [9] Krawiarz, J. & Magalas, L. (2005). Modified cast Hadfield steel with increased abrasion resistance. Przegląd Odlewnictwa. 10, 666.
• [10] 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 rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018)