Structure and corrosion resistance of aluminium AlMg2.5; AlMg5Mn and AlZn5Mg1 alloys

• Autorzy: Kciuk M. , Kurc A. , Szewczenko J.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The aim of the work was the evaluation of corrosion resistance and structure of aluminium AlMg2.5; AlMg5Mn and AlZn5Mg1 alloys. Design/methodology/approach: The corrosion resistance tests of investigated alloys were carried out by means of potentiodynamic method registering anodic polarization curves in 3.5% NaCl solution at room temperature. Registering anodic polarization curves was conducted at the potential rate equal to 1mV/s. As the reference electrode was used saturated calomel electrode (SCE) and the auxiliary electrode was platinum electrode. Mechanical properties were evaluated on the basis of Vickers hardness test. The test was realized with the use of Hauser hardness tester. The observations of the surface morphology after corrosive tests were carried out using Digital Scanning Electron Microscope DSM 940 OPTON. Findings: The investigations of corrosion resistance of examined aluminium alloys shows that the highest corrosion resistance in 3.5% NaCl solution was observed for AlZn5Mg1 aluminium alloy. Practical implications: The obtained results can be used for searching the appropriate way of improving the corrosion resistance of analysed alloys because better corrosion resistance, lightweight of aluminium and its alloys makes them as most attractive for the steel replacement in shipbuilding. Originality/value: The corrosion behaviour in chloride solution of AlMg2.5; AlMg5Mn and AlZn5Mg1 alloys was investigated.

Słowa kluczowe

EN

corrosion; corrosion resistance; aluminium alloy; potentiodynamic tests; NaCl solution

PL

korozja; odporność na korozję; stop aluminium; badanie potencjodynamiczne; roztwór NaCl

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2010
• Tom: Vol. 41, nr 1-2
• Strony: 74--81
• Opis fizyczny: Bibliogr. 15 poz., rys., tabl.

Twórcy

autor

Kciuk M.

autor

Kurc A.

autor

Szewczenko J.

• Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, 44-100 Gliwice, Poland,

Bibliografia

• [1] E. Romhanji, M. Popovic, Problems and prospect of Al-Mg alloys application in marine constructions, Journal of Metallurgy 12/4 (2006) 297-307.
• [2] M. Kciuk, Structure, mechanical properties and corrosion resistance of AlMg5 alloy, Journal of Achievements in Materials and Manufacturing Engineering 17 (2006) 185-188.
• [3] K. Wolfensberger, The European aluminium industry in world-wide perspective, Aluminium 74/9 (1998) 564-574.
• [4] Z. Śmieszek, T. Biegaj, Tendencies in the European industry of non-ferrous metals, Ores and Nonferrous Metals 4 (2000) 212-225 (in Polish).
• [5] W. S. Miller, L. Zhuang, J. Bottema, A. J. Wittebrood, P. De Smet, A. Haszler, A. Vieregge, Recent development in aluminium alloys for the automotive industry, Materials Science and Engineering A 280 (2000) 37-49.
• [6] B. Zaid, D. Saidi, A. Benzaid, S. Hadji, Effects of pH and chloride concentration on pitting corrosion of AA6061 aluminium alloy, Corrosion Science 50 (2008) 1841-1847.
• [7] S. Tkaczyk, M. Kciuk, The stress corrosion resistance investigations of aluminium AlMg5 alloy, Proceedings of the 12th International Scientific Conference “Achievements in Mechanical and Materials Engineering Gliwice- Zakopane, 2003, 257-262 (in Polish).
• [8] M. Kciuk, S. Tkaczyk, Structure, mechanical properties and corrosion resistance of AlMg5 and AlMg1Si1 alloys, Journal of Achievements in Materials and Manufacturing Engineering 21/1 (2007) 39-42.
• [9] http://www.sintef.no/static/mt/norlight/seminars/norlight2003/Postere/Gaute%20Svenningsen.pdf
• [10] Z. Szklarska-Smialowska Pitting corrosion of aluminum, Corrosion Science 46 (2004) 893-902.
• [11] J. R. Davis, Corrosion of aluminium and aluminium alloys, ASM International, 1999.
• [12] Standard PN- EN ISO 6507-1:2007, Metalls. Hardness measurements made by Vickers method (in Polish).
• [13] M. Opiela, A. Grajcar, W. Krukiewicz, Corrosion behaviour of Fe-Mn-Si-Al, Journal of Achievements in Materials and Manufacturing Engineering 33/2 (2009) 159-165.
• [14] J. Baszkiewicz, M. Kamiński, Fundamentals of materials corrosion, Warsaw University of Technology Publishers, Warsaw, 1997 (in Polish).
• [15] J. R. Galvele, Tafels law in pitting corrosion and crevice corrosion susceptibility, Corrosion Science 47 (2005) 3053-3067.