Material flow law and mechanical property of 5052 aluminum alloy sheets under dynamic and quasi-static hole-flanging

• Autorzy: Zhang Lei , Cui Xiaohui , Yan Ziqin , Yang Guang

Identyfikatory

DOI

10.1007/s43452-023-00744-1

• Języki publikacji: EN

Abstrakty

EN

The formability of aluminum alloys at room temperature is low, which can lead to the fracture of the sheets under traditional stamping. In this work, electromagnetic forming (EMF) and stamping flanging of 5052 aluminum alloy sheets were performed by experimentally and 3D numerical simulation. Under stamping flanging, when the prefabricated hole diameter decreases, the flanging height increases, but the gap between the flanged part and die and maximum thinning rate becomes larger. With the increase of discharge voltage, the fittability of the flanged parts is improved. There is a critical discharge voltage, under which the fittability and maximum thinning rate are optimal. Compared with stamping, the sheet flanging height is larger under EMF. This is due to the inner and outer layers of sheet fillet are subjected to greater radial tensile strain, and the thickness of sheet fillet are reduced after EMF. In addition, the sheet mouth collides with die at high speed, which causes the mouth material extend radially. The results revealed that the hardness of outer and middle layers at the sheet fillet was larger after EMF than that after stamping, while that of the inner layer was relatively small. This distribution of hardness corresponds to material strain.

Słowa kluczowe

EN

hole flanging; electromagnetic flanging; numerical simulation; forming quality

PL

symulacja numeryczna; jakość formowania; stop aluminium

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2023
• Tom: Vol. 23, no. 3
• Strony: art. no. e203, 2023
• Opis fizyczny: Bibliogr. 18 poz., rys.

Twórcy

autor

Zhang Lei

• College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China

autor

Cui Xiaohui

• Light Alloy Research Institute, Central South University, Changsha 410083, China
• State Key Laboratory of Precision Manufacturing for Extreme Service Performance, Central South University, Changsha 410083, People’s Republic of China

autor

Yan Ziqin

• College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China

autor

Yang Guang

• Light Alloy Research Institute, Central South University, Changsha 410083, China

Bibliografia

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Uwagi

PL

Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024)