Properties of AW 5059 aluminium alloy joints welded by mig and Friction Stir Welding (FSW)

• Autorzy: Czechowski M.
• Języki publikacji: EN

Abstrakty

EN

The article presents the results of the mechanical properties of aluminium alloy AW 5059 [AlMg5.5Zn] welded by MIG and friction stir welding FSW. Friction Stir Welding (FSW) – a new technology can be successfully used for butt welding of different types of aluminium alloy sheets. Research results on stress corrosion cracking for the AW 5059 alloy welded joints are presented. Stress corrosion cracking was examined via the slow-strain-rate-testing (SSRT) according to EN ISO 7539-7. The following parameters were measured: time-to-failure, obtained max. load, strain energy (the diagram surface under the stress-elongation curve), relative elongation of the specimen, tensile stress and reduction-in-area. The fractures were analysis by scanning electron microscope of Philips XL 30 type. Tests were carried out in the air and in a 3.5% water solution of NaCl – artificial sea water. On the basis of obtained test results, it can be said that 5059 alloy joints welded by FSW are resistant to stress corrosion in sea water. Tests have shown that the 5059 alloy, welded by FSW, has superior strength properties compared to the FSW 5083 alloy, along with comparable, good resistance to stress corrosion. Original value are received results of the mechanical and corrosion properties of a new method friction stir welding used for joining AW 5059 alloy sheets.

Słowa kluczowe

EN

friction stir welding (FSW); mechanical properties; aluminium alloys; stress corrosion cracking

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2013
• Tom: Vol. 20, No. 3
• Strony: 125--129
• Opis fizyczny: Bibliogr. 7 poz., rys.

Twórcy

autor

Czechowski M.

• Gdynia Maritime University Faculty of Marine Engineering Morska Street 81-87, 81-225 Gdynia, Poland tel.:[phone], fax: [phone]

Bibliografia

• [1] Thomas, W. M., Friction Stir Welding. GB patent 9125978, 6.12.1991, International patent application PCT/GB92/02203.
• [2] Czechowski, M., Pietras, A., Zadroda, L., The Properties of Aluminium Alloys 5xxx Series Welded by New Technology Friction Stir Welding, Inżynieria Materiałowa, Nr 6 (137), pp. 264-266, 2003.
• [3] Eriksson, L. G., Larsson, R., Friction Stir Welding – Progress in R&D and New Applications, Svetsaren, Vol. 57, No. 2, pp. 11-13, 2002.
• [4] Davis, J. R., Corrosion of Aluminium and Aluminium Alloys, ASM International, Materials Park, OH, 1999.
• [5] Lumsden, J. B., Mahoney, M. W., Rhodes, C. G. Pollock, G. A., Corrosion Behavior of Friction-Stir-Welded AA 7050-T7651, Corrosion, Vol. 59, No. 3, pp. 212-219, 2003.
• [6] Squillace, A., Fenzo, A., Giorleo, G., Bellucci, F., A Comparison Between FSW and TIG Welding Techniques: Modifications of Microstructure and Pitting Corrosion Resistance in AA 2024-T3 Butt Joints, Materials Processing Technology, Vol. 152, pp. 97-105, 2004.
• [7] Dudzik, K., Stress Corrosion Cracking of 7020 Aluminium Alloy Jointed by Different Welding Methods, Journal of KONES Powertrain and Transport, Vol. 17, No. 4, pp. 143-147, 2010.