Microstructure Evolution of 5052 Aluminum Sheet in Electromagnetic High-Speed Impact
Open Access
- 27 April 2020
- Vol. 10 (5), 564
- https://doi.org/10.3390/met10050564
Abstract
Electromagnetic forming (EMF) is a high-speed forming technology, which can not only improve the formability of hard-to-form materials but also reduce springback. Electromagnetic high-speed impact can further improve the formability compared with electromagnetic free forming. The microscopic deformation mechanism of electromagnetic high-speed impact of aluminum alloy is discussed in this paper. The microstructures of electromagnetic high-speed impact of an aluminum alloy sheet were characterized. The microscopic deformation mechanisms of electromagnetic forming and electromagnetic high-speed impact were shown, respectively. The research results showed that electromagnetic high-speed impact could significantly improve the microhardness of the workpiece. The grains broke up and then became small subgrains during electromagnetic high-speed impact. The deformation mechanism was dominated by dislocation cross slip under electromagnetic high-speed impact.Keywords
Funding Information
- National Natural Science Foundation of China-Yunnan Joint Fund (51705169)
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