2001 Volume 42 Issue 6 Pages 1035-1041
The microstructural and mechanical characteristics of component with the macro-interface between unreinforced magnesium and composite manufactured by squeeze casting were determined. The effect of thermal cycling on the tensile properties of the component with the macro-interface, which is a potential site of cyclic stress formation, was investigated. The macro-interface has diffuse interface characteristics; its thickness is about 7–10 \\micron. A reaction product was formed near the macro-interface. It has been found that the component are weaker than pure magnesium, and the tensile strength of the component decreases with thermal cycling as a function of both the number of thermal cycles and ΔT. The fracture behavior was evaluated by the study of fracture surfaces on both sides of the component fractured at the macro-interface.