High strain rate behavior of aluminum die cast components

摘要: Abstract Research results of static and dynamic mechanical tests (ɛ = 1 * 10-3 s-1 ɛ ~ 5 102 conducted on samples obtained from three different die cast products (component A, B C) AlSi10MnMg alloy are reported. All the components have thin-walled geometry except some thicker positions component C. The (high strain rate) characterization shows an increase tensile properties, in respect to ones (tensile strength increases approximately 15%, yield 30%, for all components) together with evident plastic deformation, consequent necked region fractured section, substantially negligible case tests. Moreover, fractographic observations specimens undergone high rate test conditions, observe fracture morphology, metallographic analysis only polished or etched transverse reveal porosity, microstructure dendrite inter-dendrite morphologies.