Investigation of the influence of recrystallization annealing modes on the structure and properties of deformed aluminum alloy 2024

Abstract

This paper presents the results of the combined use of the method for calculating the grain form factor and determining the microhardness in order to select a requested temperature range for recrystallization annealing of deformed aluminum alloy 2024. It is shown that at annealing temperatures above 400°C, the holding time has virtually no effect on the grain form factor of the aluminum alloy 2024. At annealing temperatures above 400°C, a uniform structure is formed with increased values of the hardness relative to the plastically deformed and initial state of the investigated alloy. It is also established that an increase of the holding time during recrystallization annealing allows for the formation of an equiaxed grain in the alloy at lower temperatures.