Cyclic cracking resistance of 1561 aluminum alloy in air and NaCl solution

• Published in: Soviet Materials Science 1988-01, Vol.24 (1), p.87-91
• Main Authors: Yarema, S. Ya, Zima, Yu. V., Olik, A. P., Bakulin, A. V., Borsukevich, V. I.
• Format: Article
• Language: English
• ISSN: 0038-5565; 1573-885X
• DOI: 10.1007/BF00722586

Previously abstracted from original as item 8810-6.1-0549Y. An experimental study is made of fatigue crack growth in a weldable nonhardening Al--Mg alloy, 1561, which is commonly used in ship building. The kinetic diagrams of fatigue fracture indicate that, for maximum stress intensity factors close to the critical value, fatigue crack growth rates in a 3% NaCl solution and air are practically the same, which is explained by the short duration of the interaction between the metal and the medium. As the load decreases, the corrosive medium accelerates fatigue crack growth, which reaches a maximum approximately in the middle of the kinetic diagram (10 exp --7 -10 exp --6 m/cycle). It is also shown that the effect of the corrosive medium is more pronounced in the rolling direction. 9 ref.--X-ref.(US).