Abstract
The cyclic crack resistance of D16ATNV (2024-T3 type) and V95T1 (7075-T6 type) degraded aluminum alloys is investigated. The specimens are cut out from different zones of the wing skin of an AN-12 aircraft after 40 yr of its operation along (L-specimens) and across (T-specimens) the direction of rolling of skin sheets. The tests were carried in air at temperatures of 20 and – 60°C and in a corrosive medium (3.5% NaCl solution). It is shown that the effects of low temperature and corrosive medium on the fatigue threshold ΔK th and cyclic fracture toughness ΔK fc for D16ATNV alloy are qualitatively similar to the effects observed for D16 and V95 aluminum alloys in the as-received state. At the same time, the indicated effects are absolutely different for V95T1 alloy.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
