Heat treatment studies of Al-Zn-Mg alloy forgings of the DTD 5024 type

Porgings were given a variety of heat treatments after which hardness, static tensile properties, fatigue properties, fracture toughness and stress corrosion resistance were determined. Microstructures were studied in the electron mcroscope using the thinfoil technique. The effect of heat treatment on the microstructure could be explained on the...

Correlations involving properties and microstructures of Al-An-Mg alloy forgings of the 7079 type

Correlation diagrams show that fracture toughness and fatigue crack propagation resistance are closely related properties, while stress corrosion endurance is a crack tolerance property with different characteristics. The heat treatment effects on characteristic dimensions of the microstructure could generally be explained on the basis of...