Journal
MATERIALS LETTERS
Volume 318, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2022.132209
Keywords
Metals and alloys; Electro-pulsing; Microstructure; Recrystallization
Funding
- Provincial Natural Science Foundation of Shandong [20190103053JH]
- Talent Development-Excellent Young Talents Fund Project, China [2020YFB2008300, 2020YFB2008303, 2020YFB2008304]
- National Key Research and Development Pro-gram of China [51701080]
- National Natural Science Foundation of China
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This study investigates the effects of electropulsing treatment (EPT) and conventional heat treatment on the microstructure and mechanical properties of extruded Mg-1.18Al-0.3Ca-0.46Mn alloy. The results show that EPT can replace solid solution treatment, refine grains, and reduce peak aging time. The accelerated aging process may be attributed to the increased vacancies and dislocations induced by EPT.
The effects of electropulsing treatment (EPT) and conventional heat treatment on the microstructure and me-chanical properties of extruded Mg-1.18Al-0.3Ca-0.46Mn alloy were investigated. The results showed that EPT can replace the solid solution treatment, refine the grains and reduce 33% of the followed peak aging time (compared with the T6 sample). The mechanism of accelerated aging process may mainly base on the fact that EPT induce more vacancies and dislocations, which makes it easier to nucleate than traditional solid solution treatment. This interesting result exhibits a new pathway to strengthen Mg alloys in a very short time.
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