Effects of Aging Temperature, Time During Transition from Brittle to Ductile on Fracture Behavior of Zinc Coated AA7075

Abstract

Received: 25 February 2020 Accepted: 10 April 2020 During coating, the post-baking phase of the coated material has shown maximum impact on the fracture toughness and the parameters during the coating process have shown their own influence during the heat-treating the materials. To know the effect of this, the experiments are done on the age hardened specimens. Age hardening of aluminum is carried out in the following ways; one by varying the temperature of aging and the other by varying the time of aging. The results found from both the experimental and the fractographic analysis have shown that, the variation in the fracture toughness of the materials is mainly due to the changes found in the grain structure of the materials. The results obtained during the experiments have shown that, the fracture behavior of the coated and heat-treated aluminum a material is changed significantly.