Numerical Analysis of Deformation of AZ31 Magnesium Alloy in Backward Extrusion with Counter Pressure

Xue Yu Zhang; Rui Bin Mei; Piao Piao Li; Li Bao; Jie Zhang; You Zhi Zhou

doi:10.4028/www.scientific.net/MSF.861.216

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HomeMaterials Science ForumMaterials Science Forum Vol. 861Numerical Analysis of Deformation of AZ31...

Numerical Analysis of Deformation of AZ31 Magnesium Alloy in Backward Extrusion with Counter Pressure

Abstract:

A numerical simulation on the deformation behavior of AZ31 magnesium alloy during backward extrusion with counter pressure was investigated by FE software DEFORM. The results show that the steady load increases nonlinearly with the increment of counter pressure. The equivalent strain gradient decreases significantly results from the counter pressure and the unevenness in the top of wall disappeared approximately when the counter pressure is 10~15MPa. Furthermore, there are obviously shear band along the inner fillet to outer fillet of workpiece. Higher hydrostatic pressure generated with counter pressure compared that of no counter pressure leads to improve the plastic deformation limit. The damage factor is reduced significantly in the backward extrusion with counter pressure, which is beneficial to the improvement of crack.

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Periodical:

Materials Science Forum (Volume 861)

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216-221

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https://doi.org/10.4028/www.scientific.net/MSF.861.216

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Online since:

July 2016

Authors:

Xue Yu Zhang, Rui Bin Mei*, Piao Piao Li, Li Bao, Jie Zhang, You Zhi Zhou

Keywords:

AZ31 Magnesium Alloy, Backward Extrusion, Counter Pressure

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