Microstructural Evolution during Annealing of 5052 Al Alloy Deformed at Cryogenic Temperature
The activation energy for recovery and recrystallization was calculated using DSC data. The annealing below 250°C resulted in the bimodal grain size distribution, while that above 300°C resulted in the uniform distribution of coarse grains. The formation of a bimodal microstructure would be responsible for the good combination of uniform elongation and tensile strength. Additionally, the little variation of hardness for different annealing time at 300°C also indicated that mechanical properties of deformed and annealed 5052 Al alloy were significantly influenced by the volume fraction of recrystallized grains rather than the coarsening of recrystallized grains.
Byung Tae Ahn, Hyeongtag Jeon, Bo Young Hur, Kibae Kim and Jong Wan Park
U. G. Gang et al., "Microstructural Evolution during Annealing of 5052 Al Alloy Deformed at Cryogenic Temperature", Solid State Phenomena, Vols. 124-126, pp. 1393-1396, 2007