Study of fatigue behaviour of 7475 aluminium alloy

B. B. Verma, J. D. Atkinson, M. Kumar
2001 Bulletin of Materials Science  
Fatigue properties of a thermomechanically treated 7475 aluminium alloy have been studied in the present investigation. The alloy exhibited superior fatigue life compared to conventional structural aluminium alloys and comparable stage II crack growth rate. It was also noticed that the fatigue crack initiated from a surface grain and the crack extension was dominated by ductile striations. Analysis also revealed that this alloy possessed fracture toughness and tensile properties superior to
more » ... ies superior to that noticed with other structural aluminium alloys. Therefore the use of this alloy can safely reduce the overall weight of the aircraft.
doi:10.1007/bf02710107 fatcat:ood3xiqs6rgdhltgiefpytgw6a