Transactions of Materials and Heat Treatment

Title：Numerical simulation analysis of microstructure evolution in the continuous extrusion for CuMg0.3 Cu-Mg alloy

Authors： Cai Feifei Liu Xinkuan Liu Ping He Daihua Chen Xiaohong Jin Wei Zhang Miao

Unit： University of Shanghai for Science and Technology Shanghai Yajue Machiney Manufacturing Co. Ltd.Shyiganghai Shunchung Material Technology Co. Ltd.

KeyWords： copper magnesium alloy continuous extrusion numerical simulation grain size

ClassificationCode：TG376

year,vol(issue):pagenumber：2015,40(3):141-146

Abstract：

The continuous extrusion deformation model was established based on the main modules of the continuous extrusion process in Deform-3D software. The continuous extrusion process of Cu-Mg alloy bar was numerically simulated, and the change regulations of grain size in the rolling deformation zone, upsetting deformation zone, extension forming zone and sizing extrusion forming zone of continuous extrusion process were analyzed. Comparing the results of numerical simulation with experimental results, it is found that Cu-Mg alloy bar retains in the process of flow deformation drove by the extrusion wheel groove friction, and during the process,there are large deformation degree, high deformation temperature, short stop time and without growing up grain size for most of the material after the occurrence of dynamic recrystallization. Therefore, after the main deformation zone occures, grain size of final extrusion forming Cu-Mg alloy sheet is refined greatly, and the related mechanical properties are also improved.

Funds：

上海市教委创新项目（11YZ112）；上海市科委基础研究重点项目（10JC1411800）；上海市教育委员会重点学科建设项目（J50503）

蔡飞飞（1989-），男，硕士研究生

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