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Fatigue Crack Path in 2xxx Aluminum Alloys at 223K
Last modified: 2013-03-12
Abstract
The Fatigue Crack Growth behavior of new generation 2xxx aluminumalloys has been investigated at 223K in comparison to room temperature. Crack growthrates are not influenced by a cold and dry environment in the peak aged temper but areone order of magnitude slower in the naturally aged temper. Such retarded crackpropagation is associated to a highly crystallographic crack path. Results are discussedon the basis of a model for intrinsic and environmentally assisted crack propagation.
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