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In this paper two examples of the influence of time-dependent processeson crack path in two 2XXX aluminium alloy are presented. The common idea is tocorrelate quantitative measurements of relevant fractographic features of crack path tothe effects of time-dependent processes on crack growth rates. The first example isconcerned with corrosion-fatigue crack growth resistance of a 2024T351 alloy crackedin the S-L direction in 3.5% NaCl solution at free corrosion potential. The crack growthenhancement induced by corrosion under certain loading conditions is accompanied byan increase in the number of smooth and flat facets on rupture surfaces which areidentified as intergranular decohesions. The second example deals with the elevatedtemperature crack growth resistance of a 2650 T6 alloy that might be used in futuresupersonic aircraft fuselage panels. The creep crack growth is governed by anintergranular decohesion process induced by vacancy diffusion. The creep-fatiguecrack growth at low frequency is significantly enhanced with respect to fatigue crackgrowth at elevated temperature. Meanwhile the intergranular fraction of the crack pathis correlated with the loading period and the resulting crack growth enhancement for afixed frequency and environment: the longer the period, the higher the crack growth enhancement and the higher the surface fraction of intergranular decohesions.