The effects of hydrostatic pressure on the mechanism of tensile fracture of aluminum

The effects of hydrostatic pressures up to 600 MPa on the tensile fracture mechanisms of commercial aluminum and a free machining aluminum-copper alloy have been investigated. Tensile fracture of the commercial aluminum was found to occur by a mechanism leading to double-cup fracture at hydrostatic pressures up to 125 MPa with the pressure causing a progressive delay in the onset of void development. Above this pressure, void development was...