Microstructure and Fatigue Life of the A359 Alloy Reinforced with Al₂O₃ after Multiple Remelting

• Autorzy: Pietrzak K. , Klasik A. , Maj M. , Sobczak J. , Wojciechowski A.

Identyfikatory

DOI

10.24425/122500

• Języki publikacji: EN

Abstrakty

EN

The multiple direct remelting of composites based on the A359 alloy reinforced with 20% of Al₂O₃ particles was performed. The results of both gravity casting and squeeze casting were examined in terms of the obtained microstructure and mechanical characteristics. In microstructure examinations, the combinatorial method based on phase quanta theory was used. In mechanical tests, the modified low cycle fatigue method (MLCF) was applied. The effects obtained after both gravity casting and squeeze casting were compared. It was noted that both characteristics were gradually deteriorating up to the tenth remelting. The main cause was the occurrence of shrinkage porosity after the gravity casting. Much better results were obtained applying the squeeze casting process. The results of microstructure examinations and fatigue tests enabled drawing the conclusion that the A359 alloy reinforced with Al₂O₃ particles can confer a much better fatigue life behavior to the resulting composite than the A359 alloy without the reinforcement. At the same time, comparing these results with the results of the previous own research carried out on the composites based also on the A359 alloy but reinforced in the whole volume with SiC particles, it has been concluded that both types of the composites can be subjected to multiple remelting without any significant deterioration of the structural and mechanical characteristics. The concepts and advantages of using the combinatorial and MLCF methods in materials research were also presented.

Słowa kluczowe

EN

A359 alloy; composite microstructure; mechanical properties; multiple remelting

PL

stop A359; mikrostruktura kompozytu; właściwości mechaniczne; przetapianie wielokrotne

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2018
• Tom: Vol. 18, iss. 2
• Strony: 39--44
• Opis fizyczny: Bibliogr. 17 poz., rys., tab., wykr.

Twórcy

autor

Pietrzak K.

• Institute of Precision Mechanics, Warsaw, Poland

autor

Klasik A.

• Motor Transport Institute, Warsaw Poland

autor

Maj M.

• AGH University of Science and Technology, Faculty of Foundry Engineering, Department of Foundry Process Engineering, Cracow, Poland

autor

Sobczak J.

• Foundry Research Institute, Cracow

autor

Wojciechowski A.

• Warsaw University of Life Sciences, Faculty of Production Management and Production Engineering, Warsaw WGW Green Energy Poland, Łomianki, Poland

Bibliografia

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• [6] Ravi, K.R., Pillai, R.M., Pai, B.C. & Chakraborty, M. (2007). Separation of matrix alloy and reinforcement from aluminum metal matrix composites scrap by salt flux addition. Bull. Mater. Sci. 30(4), 393-398.
• [7] Nagolska, D., Szweycer, M. & Szymański, P. (2004). Recycling AlSi11 carbon fiber reinforced carbon fiber reinforced castings. Archiwum Technologii Maszyn i Automatyzacji. 24(sp.1), 173-180. (in Polish).
• [8] Mizumoto, M., Ohgai, T. & Agawa, A. (2009). Separation of PRMMC into Matrix Alloy and Reinforcements by Nozzle Filtering Method. Journal of Material Processing Technology. May, 209(9), 4264-4267.
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• [11] Klasik, A., Maj, M., Pietrzak, K., Wojciechowski, A. & Sobczak, J. (2016). Fatigue Life and Microstructure After Multiple Remelting of A359 Matrix Composites Reinforced With SiC Particles. Arch. Metall. Mater. 61, 2123-2128.
• [12] Pietrzak, K., Makowska, K., Sobczak, J., Wojciechowski, A. & Rudnik, D. (2016). Wear Resistance of Aluminum Matrix Composites Reinforced with Al2O3 Particles After Multiple Remelting. Journal of Materials Engineering and Performance. 25, 3084-3090.
• [13] Labib, A. (1993). L'effet des niveaux de refroidissement (température de du moule) et des traitements Thermiques sur les propriétés mécaniques et sur la Microstructure des deux alliages composites Al-Si-Mg/SiC/10p. Québec: Université du Québec à Chicoutimi.
• [14] Lloyd, D.J., Dewing, E. (1989). Stability of SiC in Molten Aluminum. New York: Advanced Structural Materials (ed. D.S. Wilkinson), Pergamon Press, 71-78.
• [15] Maj, M. (2012). Fatigue life of selected casting alloys. Katowice-Gliwice: Wyd. Archives of Foundry Engineering. (in Polish).
• [16] Maj, M. & Piekło, J. (2009). MLCF - an optimised program of low - cycle fatigue test to determine mechanical properties of cast materials. Archives of Metallurgy and Materials. 54(2), 393-397.
• [17] Pietrzak, K., Sobczak, N., Sobczak, J.J., Klasik, A., Kudyba, A., Darłak, P., Długosz, P., Wojciechowski, A. & Sienicki, E. (2017). Stability of metal-ceramic slurry after multiple re-melting of A359 aluminum alloy based composite reinforced with Al2O3 particles. Transactions of Foundry Institute. 57(2), 69-84.

Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).