期刊
出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2017.06.087
关键词
Cryogenic rolling; Annealing; Mechanical properties; Recrystallization
类别
资金
- National Natural Science Foundation of China [51401016]
- National Key Project of Research and Development Program of China [2016YFB0300801]
- State Key Laboratory for Advanced Metals and Materials of China [2011Z-05]
The microstructure/mechanical properties, annealing behavior, and post-annealed microstructure/property relationship of 5052 Al alloy processed by cryogenic rolling (CR) and room-temperature rolling (RTR) have been investigated. It was observed that the CR-processed 5052 Al alloy exhibits a refined crystallite size along with higher-density dislocations than that of the RTR-processed sample. As a result, the tensile strength of the CR-processed alloy increased significantly to 345 MPa because of the enhanced dislocation strengthening and grain boundary strengthening. The effective suppression of dynamic recovery and accumulation of high-density dislocations caused by CR help accelerate recrystallization kinetics and refine the grain size, gaining higher yield strength for the post-annealed CR 5052 Al alloy compared to that of other commercial 5052-O Al alloys.
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