Effect of Cooling Speed on the Workability of AA2195 Alloy
Keywords:
AA2195, Widmanstätten, Cooling speed, WorkabilityAbstract
High-strength aluminum alloys with lithium as the main alloy have been developed worldwide to reduce the weight of aerospace components. This alloy addition significantly reduces final weight and improves mechanical properties by rendering the alloy heat-treatable. Currently, these materials are not produced in the country, and importing them is difficult due to their strategic nature. This paper presents the results obtained from studying the effects of cooling speed control on the AA2195 alloy. The analysis was performed through micrographs and hardness tests. The formation of Widmanstätten structures is observed when cooling slowly after annealing, which makes plastic forming unfeasible. Using quenching after annealing inhibits the formation of Widmanstätten structures, greatly improving the alloy's workability.
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