Transactions of Materials and Heat Treatment

Title：Macro-micro coupled numeral study on AZ31 magnesium alloy profile made by ECAP complex extrusion process

Authors： Ma Jun

Unit： Suzhou Institute of Industrial Technology

KeyWords： AZ31 magnesium alloy profile ECAP complex extrusion macro-micro coupled simalation

ClassificationCode：TG376.9

year,vol(issue):pagenumber：2014,39(8):115-118

Abstract：

Based on Deform-3D finite element platform, a macro-micro coupled finite element model for ECAP complex extrusion process (ECAP coupled with forward extrusion process) of a specification AZ31 magnesium alloy profile was established. The results show that the extrusion-load is stable at around 16000 kN and the temperature is in the range of 449-473 ℃ when the profile makes a breakthrough on the die exit. Extruded profiles can be refined to an average grain size of about 6-6.5 μm. These results are in good agreement with experimental results. So, the stability and reliability of the FE model to predict the macro and micro regularity are verified clearly. The FE model and results can provide theoretical basis for the selection of process parameters and control of organization and performance of ECAP complex extrusion process of AZ31 magnesium alloy profile.

Funds：

省级示范性高职院校建设项目（苏教高（2011）23号）；院级科研课题（SGKB201406）

马俊（1973-），男，硕士，副教授

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