Open die forgings of the aluminium alloy 7010 (DTD5636) have been retrogressed and re-aged at 200 and 240°C to improve the combination of strength and stress corrosion cracking resistance. Vickers hardness, electrical conductivity, tensile, plane strain fracture toughness and constant crack opening displacement stress corrosion cracking test data are reported. A retrogression treatment of 40 min at 200°C produces material with T6 levels of strength and fracture toughness, in combination with T74 levels of stress corrosion cracking resistance.
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