Abstract
Effect of impact compression on the age-hardening behavior and the mechanical properties of Mesoalite (Meso10 and Meso20) aluminum alloy was examined by means of the high-velocity plane collision between a projectile and Mesoalite by using a single powder gun. By imposing the impact compression (5 GPa) to the Meso10 and Meso20 alloys in the state of quenching after the solution heat treatment, the following age-hardening at 110°C was highly accelerated. In the impact compression (5.7 GPa) against the peak-aged Mesoalite specimens, hardness was also increased, comparing with the Mesoalite without the impact compression. XRD revealed that high strain was introduced on the specimen inside after the impact compression. Compression test results revealed that both Meso10 and Meso20 specimens imposed the impact compressive stresses more than 5 GPa after the peak-aging at 110°C showed higher compressive yield stresses, comparing with the peak-aged specimens without the impact compression. It was also shown that Meso10 and Meso20 specimens after the solution treatment, followed by the high-velocity impact compression (12 GPa) and the peak-aging treatment indicated the highest compressive yield stresses, such as 994 MPa in Meso10 and 1091 MPa in Meso20, respectively.
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