| Description |
viii, 58 leaves : illustrations ; 29 cm |
| Summary |
"Although aluminum casting alloys are not often thought of as being formable, this thesis examines this possibility. Aluminum alloy 356 was cast in permanent molds and subsequently deformed by rolling (providing compressive loading) and bending (providing tensile loading). Cold forming was found to be very limited, while forming at elevated temperatures was comparatively easy and permitted reductions of up to 90%. Tensile properties and microstructures were examined in detail. Forming breaks up the eutectic silicon and intermetallic compounds. The yield strength and tensile strength increased almost linearly with increasing total percent reduction. The elongation at first increases with total percent reduction and then decreases, with the peak occurring between 40 and 60 total percent reduction. The enhancement of properties is due primarily to the dispersion of the silicon during the deformation process"--Abstract, leaf ii. |
|
