Recovery and recrystallization of different grades of high purity aluminium determined with a low temperature calorimeter

• Published in: Scripta metallurgica 1988, Vol.22 (12), p.1917-1922
• Main Authors: Haessner, F., Schmidt, J.
• Format: Article
• Language: English
• Subjects: Cold working, work hardening; annealing, quenching, tempering, recovery, and recrystallization; textures; Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Materials science; Metals, semimetals and alloys; Phase diagrams and microstructures developed by solidification and solid-solid phase transformations; Physics; Specific materials; Treatment of materials and its effects on microstructure and properties
• ISSN: 0036-9748
• DOI: 10.1016/S0036-9748(88)80238-2

Calorimetric methods play a central role in the study of the kinetics of recovery and recrystallization as they enable the momentary driving forces for the controlling processes to be determined. These quantities are a measure of the corresponding rates of the processes. Due to the good time-resolution of the calorimetric signals, it is possible to register the course of reaction under defined experimental conditions. This type of experiment is particularly useful if the processes take place in a temperature range in which microscopy is not feasible. The application of this technique to study the annealing behavior of a high purity metal, deformed at low temperature, is reported. The following results on different grades of Al suggest that it is possible to differentiate clearly on the basis of calorimetric data between recovery and recrystallization. 17 ref.--AA(UK/US).