Transactions of Materials and Heat Treatment

Title：Numerical simulation of extrusion process of AZ31 magnesium alloy tubes

Authors： XIA Ju-chen WANG Xin-yun CHENG Jun-wei HU Guo-an (Leading State Laboratory of Dies/Mould Technology Huazhong University of Science & Technology Wuhan Hubei 430074 China)

Unit：

KeyWords： AZ31 magnesium alloy tubes extrusion process numerical simulation

ClassificationCode：TG379

year,vol(issue):pagenumber：2005,30(2):49-52

Abstract：

The rheology performance of AZ31 magnesium alloy under different temperature ranges and at different forming rates is explored in the experiments using Gleeble1500 thermo-simulator. Through the experiment, the relation formula of real stress , real strain and the curve of stress and strain are achieved. Based on this, using DEFORM-3D software, the simulation of tube forming process of different wall thickness are carried out. It is found that the metal flow of the inner wall is faster than that of the outer wall during the tube extrusion and the equivalent strain value is the biggest at transition place from the extruded section to taper face. The correctness of simulating analysis is verified by analyzing the reason and through the process experiment.

Funds：

高等学校博士点学科专项科研基金资助课题(20010487002)

Reference：

[1]李海江.镁合金挤压成形工艺数值模拟的研究[D].华中科技大学硕士论文.2003.
[2]夏巨谌,王新云.变形镁合金流变性能的研究[J/OL].中国科技论文在线.2004,0314.

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