Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 735, Issue -, Pages 154-161Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2018.08.029
Keywords
6061 alloy; Electric pulsing treatment; Precipitation; Aging; Dislocations pinning
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Funding
- National Natural Science Foundation of China [51701080]
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The effect of electric pulsing treatment (EPT) on the solid-solutioned Al-Mg-Si alloy was investigated in this paper. It was interestingly found that EPT promoted the precipitation of the stable Al5FeSi phase. Besides, the precipitates pinned the dislocations effectively, thus the dislocations would be remained after the aging process. Moreover, the most interesting phenomenon was that the deformation bands induced by the remained tangled dislocation made the precipitates Mg,Si from rod-like to globular. Consequently, the superior strength (47.2% higher than T6 temper) alloy nearly without loss of ductility was obtained.
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