Abstract
The hot workability of SiCp/2024 Al composite was explored by conducting hot compression simulation experiments on Gleeble-3500 under temperatures of 300–500 °C and strain rates of 10−3–1 s−1. Constitutive equation was developed through hyperbolic sine function, and the activation energy was calculated to be 151 kJ mol−1. The hot processing maps referring to dynamic material model were drawn in a true strain range from −0.2 to −0.8. At the strain of −0.8, the recommended regions in processing map contained two domains: superplastic domain (500 °C, 10−3 s−1) with an efficiency of about 0.72 and DRX domain (500°C, 1 s−1) with an efficiency of about 0.45. Together with macrostructure and microstructure observations, it was suggested to remove the DRX region.
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