Springback Suppression of AZ31 Magnesium Alloy Sheet in Draw Bending at Elevated Temperature

Takashi Katahira; Takeshi Uemori; Tetsuya Yoshida; Michihiro Takiguchi; Tetsuo Naka; Komgrit Lawanwong; Fusahito Yoshida

doi:10.4028/www.scientific.net/KEM.794.127

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 794Springback Suppression of AZ31 Magnesium Alloy...

Springback Suppression of AZ31 Magnesium Alloy Sheet in Draw Bending at Elevated Temperature

Abstract:

In recent years, warm forming of magnesium sheets has been investigated by many researchers since the ductility of the sheets becomes considerably higher due to low CRSS (critical resolved shear stress) at high temperatures (e.g., [1]-[3]). In the present research, the springback of AZ31 magnesium sheet was investigated by performing a draw-bending experiment at several temperatures from 20 °C (room temperature) to 200 °C at drawing speeds ranging from 0.01 to 1.0 mm/s. From the experiment, it was found that the springback was remarkably reduced at 200 °C, especially at a low forming speed, since the flow stress was very low under such a forming condition, and furthermore, the stress relaxation effect was dominant. The effects of temperature and forming speed on springback were discussed.

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Periodical:

Key Engineering Materials (Volume 794)

Pages:

127-132

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.794.127

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Online since:

February 2019

Authors:

Takashi Katahira*, Takeshi Uemori, Tetsuya Yoshida, Michihiro Takiguchi, Tetsuo Naka, Komgrit Lawanwong, Fusahito Yoshida

Keywords:

AZ31 Magnesium Sheet, Draw Bending, Springback, Warm Forming

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