Influences of magnetic annealing on the grain growth in a cryoECAPed 1050 aluminum alloy
| Autor: | Jianzhong Cui, Cheng Lu, Yunxia Cao, Guo Yaping, Lizi He, Ping Wang, X.T. Liu, Haitao Zhang |
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| Rok vydání: | 2013 |
| Předmět: |
Materials science
Annealing (metallurgy) Mechanical Engineering Alloy Metallurgy chemistry.chemical_element Abnormal grain growth engineering.material Condensed Matter Physics Microstructure Magnetic field Condensed Matter::Materials Science Grain growth chemistry Mechanics of Materials Aluminium engineering General Materials Science Composite material Dislocation |
| Zdroj: | Materials Characterization. 84:188-195 |
| ISSN: | 1044-5803 |
| DOI: | 10.1016/j.matchar.2013.07.020 |
| Popis: | The evolutions of hardness, grain microstructures and dislocations were investigated in cryoECAPed 1050 aluminum alloy after annealing at 423–673 K for 1 h without and with a magnetic field of 12 T. Compared to those of samples annealed without the magnetic field, the hardness of samples annealed with the magnetic field is lower at 423–573 K, and then higher at > 573 K. The high magnetic field accelerates the formation of dislocation cells or sub-grains. The interface dislocations frequently observed in materials deformed at high temperature were detected in samples annealed with the magnetic field at ≥ 423 K. The fraction of low angle boundaries in sample annealed with the field is 49% and 34% in sample annealed without the field even at 673 K. No abnormal grain growth occurs in samples annealed with the magnetic field due to the rapid consumption of the stored distortion energy during recovery. |
| Databáze: | OpenAIRE |
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