The Role of Microstructure on the Corrosion Behaviour of as cast AlCu4MgSi and MgAl2Si Alloys

• Autorzy: Lachowicz M. M. , Jasionowski R.

Identyfikatory

DOI

10.24425/122514

• Języki publikacji: EN

Abstrakty

EN

In this work, the effect of the microstructure on corrosion behavior of selected Mg- and Al-based as cast alloys, was evaluated. The electrochemical examinations were carried out, and then a morphology of corrosion products formed due to local polarization on materials surface, was analyzed. It was documented that the presence of Mg₂Si phase plays an important role in the corrosion course of Mg-based alloy. A selective etching was observed in sites of Mg₂Si precipitates having “Chinese script”- like morphology. Analogous situation was found for Al-based alloy, where the key role was played by cathodic θ-CuAl₂ phase.

Słowa kluczowe

EN

metallography; corrosion resistance; aluminum alloy; magnesium alloy; Al-Cu-Mg-Si alloy; Mg-Al-Si alloy

PL

metalografia; odporność korozyjna; stop aluminium; stop magnezu; stop Al-Cu-Mg-Si; stop Mg-Al-Si

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2018
• Tom: Vol. 18, iss. 2
• Strony: 125--130
• Opis fizyczny: Bibliogr. 15 poz., rys., tab., wykr.

Twórcy

autor

Lachowicz M. M.

• Wroclaw University of Science and Technology, Faculty of Mechanical Engineering, Department of Materials Science, Welding Engineering and Strength of Materials, Smoluchowskiego 25, 50-372 Wrocław, Poland

autor

Jasionowski R.

• Maritime University of Szczecin, Faculty of Mechanical Engineering, Wały Chrobrego 1-2, 70-500 Szczecin, Poland

Bibliografia

• [1] Jasionowski, R., Zasada, D. & Przetakiewicz, W. (2014). Cavitation erosion resistance of alloys used in cathodic protection of hulls of ships. Archives of Metallurgy and Materials. 59(1), 241-245.
• [2] Markiewicz, M. (2010). Calculations and measurements of the galvanic cathodic protection. Materials of the 11th National Conference on Corrosion Measurements in Electrochemical Protections, 79-89 (in Polish).
• [3] Lachowicz, M.M. & Lachowicz, M.B. (2017). Intergranular corrosion of the as cast hypoeutectic zinc-aluminum alloy. Archives of Foundry Engineering. 17(3), 79-84.
• [4] Candan, S. & Candan, E. (2017). A comparative study on corrosion of Mg-Al-Si alloys. Transactions of Nonferrous Metals Society of China. 27, 1725-1734.
• [5] Wang, M., Xiao, D.H. & Liu, W.S. (2017). Effect of Si addition on microstructure and properties of magnesium alloys with high Al and Zn contents. Vacuum. 141, 144-151.
• [6] Mohammadi Mazraeshahi, E., Nami, B., Miresmaeili, S.M. & Tabatabaei, S.M. (2015). Effect of Si on the creep properties of AZ61 cast magnesium alloy. Materials & Design. 76, 64-70.
• [7] Akyuz, B. (2014). Influence of aluminum content on machinability of AS series cast magnesium alloys. Transactions of Nonferrous Metals Society of China. 24 (11), 3452-3458.
• [8] Zheng, Y., Xiao, W., Ge, S., Zhao, W., Hanada, S. & Ma, C. (2015). Effects of Cu content and Cu/Mg ratio on the microstructure and mechanical properties of Al–Si–Cu–Mg alloys. Journal of Alloys and Compounds. 649, 291-296.
• [9] Mohamed, A.M.A., Samuel, F.H. (2012). A review on the heat treatment of Al-Si-Cu/Mg casting alloys (in:) Heat Treatment - Conventional and Novel Applications, Dr. Frank Czerwinski (Ed.), InTech.
• [10] Vieira, A.C., Pinto, A.M., Rocha, L.A. & Mischler, S. (2011). Effect of Al2Cu precipitates size and mass transport on the polarisation behaviour of age-hardened Al–Si–Cu–Mg alloys in 0.05M NaCl. Electrochimica Acta. 56(11), 3821-3828.
• [11] Donatus, U., Thompson, G.E., Omotoyinbo, J.A., Alaneme, K.K., Aribo, S. & Agbabiaka, O.G. (2017). Corrosion pathways in aluminum alloys. Transactions of Nonferrous Metals Society of China. 27(1), 55-62.
• [12] Mizuno, K., Nylund, A. & Olefjord, I. (2001). Surface reactions during pickling of an aluminum–magnesium–silicon alloy in phosphoric acid. Corrosion Science. 43(2), 381-396.
• [13] Li, Z., Li, C., Gao, Z., Liu, Y., Liu, X., Guo, Q., Yu, L. & Li, H. (2015). Corrosion behavior of Al–Mg2Si alloys with/without addition of Al–P master alloy. Materials Characterization. 110, 170-174.
• [14] Pawar, S., Slater, T.J.A., Burnett, T.L., Zhou, X., Scamans, G.M., Fan, Z., Thompson, G.E., Withers, P.J. (2017). Crystallographic effects on the corrosion of twin roll cast AZ31 Mg alloy sheet. Acta Materialia. 133, 90-99.
• [15] Birbilis, N. & Buchheit, R.G. (2005). Electrochemical characteristics of intermetallic phases in aluminum alloys. An experimental survey and discussion. Journal of The Electrochemical Society. 152(4), B140-B151.

Uwagi

PL

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