Analysis of possible shipbuilding application of friction stir welding (FSW) method to joining elements made of AlZn5Mg1 alloy

• Autorzy: Dudzik K. , Czechowski M.
• Języki publikacji: EN

Abstrakty

EN

In industrial practice the welding of Al- alloys is usually performed under pure argon shielding by means of MIG or TIG methods. In recent years new joining techniques such as friction stir welding (FSW) have appeared. Joints of EN AW-7020 T6 alloy elements welded by using FSW method have been tested. Results of static tensile tests, transverse bending tests as well as tests on stress corrosion susceptibility are presented. Parameters of friction welding (FSW) applied to joints of plates made of AlZn5Mg1[7020] alloy are given. Stress corrosion tests have been performed by using slow-strain-rate testing method (SSRT) in compliance with PN-EN ISO 7539-7 standard. The tests were conducted in air and 3.5% NaCl water solution. The following parameters have been measured during the tests: time to failure – T [h], maximum failure load – F [N], fracture energy (area under stress-elongation curve) – E [MJ/m3], relative elongation of specimen – A10 [%], maximum tensile stress – R [MPa], as well as percentage reduction of area – Z [%]. On the basis of the obtained test results it was concluded that the joints welded by means of FSW method show good resistance to stress corrosion at satsifactory strength properties, which indicates that application of friction welding by using FSW method in shipbuilding industry is purposeful

• Wydawca: -
• Czasopismo: Polish Maritime Research
• Rocznik: 2009
• Tom: 16
• Numer: 4
• Opis fizyczny: p.37-40,fig.,ref.

Twórcy

autor

Dudzik K.

• Faculty of Marine Engineering, Gdynia Maritime University, Morska 81-87, 81-225 Gdynia, Poland

autor

Czechowski M.

• Faculty of Marine Engineering, Gdynia Maritime University, Morska 81-87, 81-225 Gdynia, Poland

Bibliografia

• 1. Anderson T.: New developments within the Aluminium Shipbuilding Industry, Svetsaren, no.1, Vol. 58, 2003.
• 2. Bugłacki H.: Influence of welding technology on resistance to corrosion of Al-Zn-Mg alloys (in Polish). International Conference on Environmental Degradation of Engineering Materials, Gdansk University of Technology, Jurata, 1999
• 3. Cudny K., Puchaczewski N.: Metal alloys for ship hull structures (in Polish). Gdansk University of Technology, Gdańsk, 1995
• 4. Czechowski M.: Research on effect of electrochemical polarization and thermal treatment on stress cracking of AlZn-Mg alloys (in Polish). Zeszyty Naukowe WSM w Gdyni (Scientific Bulletins of Gdynia Maritime Academy), No. 30, Gdynia, 1996
• 5. Czechowski M.: Effect of anodic polarization on stress corrosion cracking of some aluminium alloys. Advances in Materials Science, no. 1(11), Vol. 7, 2007
• 6. Czechowski M.: Optimum methods of welding Al-Mg alloys in the aspect of their resistance to stress corrosion cracking (in Polish). Materiały i Technologie (Materials and Technologies), Gdansk University of Technology, no. 3 (3), Gdańsk, 2005
• 7. Czechowski M.: Properties of butt welds in Al-Mg alloy plates welded by using different methods (in Polish). Materiały i Technologie (Materials and Technologies), Gdansk University of Technology, no. 1(1), Gdańsk, 2003
• 8. Czechowski M., Chrzanowski J., Zieliński A.: Stress corrosion cracking in Al- alloy welded joints (in Polish). Materials of II Pomorska Konferencja Naukowa - Inżynieria Materiałowa 2001 (2nd Pomeranian Scientific Conference on Materials Engineering), Gdansk University of Technology, Sobieszewo, 2001
• 9. Czechowski M., Pietras A., Zadroga L.: Properties of Al- alloys of 5000 series friction- welded by using a new, FSW technique (in Polish). Inżynieria Materiałowa, no. 6/2003
• 10. Czechowski M., Zieliński A.: Effect of cathodic polarization on failure and degradation of mechanical properties of some aluminium alloys. Scripta Metallurgy Materials, Vol. 30, 1994
• 11. Czechowski M., Zieliński A., Cudny K.: Effect of chemical composition and thermal treatment on stress corrosion cracking of aluminium alloys. Conference on Corrosion-Deformation Interactions, Fontainebleau, 1991
• 12. Lahti K.: FSW – possibilities in shipbuilding, Svetsaren, No.1,Vol. 58, 2003
• 13. Nicholas E., D., Kalle D., S.: Process of friction welding with weld material stirring is already 10 years old (in Polish). Biuletyn Instytutu Spawalnictwa (Bulletin of Welding Institute), no. 3/2001.

Identyfikatory

DOI

10.2478/v10012-008-0054-0