Transactions of Materials and Heat Treatment

Title：Finite element simulation and experimental research of alloy Al-Mg-Zn by unequal channel angular extrusion

Authors： Zhao Jiong Chen Enhou Li Kenan Bing Jianli

Unit： Zhengzhou Research Institute for Abrasives & Grinding Co. Ltd.

KeyWords： unequal channel angular extrusion finite element analysis grain refinement

ClassificationCode：

year,vol(issue):pagenumber：2016,41(4):54-59

Abstract：

Unequal channel angular extrusion (UECAE) of alloy Al-Mg-Mn was numerically simulated by finite element software Deform-3D. The distribution of equivalent strain and equivalent stress in the workpiece as well as load-time curve during forming process were analyzed and compared with that of ECAE under the same simulation condition. The results show that both shear deformation and radial extrusion deformation occur near the arc segment during UECAE. The load of UECAE is bigger than that of ECAE, but the single pass equivalent strain of UECAE increases effectively to improve the production efficiency and grain refinement. After UECAE, the strain segmentary distributed strain increase along the longitudinal direction from the head to the end. However, the equivalent strain distribution on the intersecting surface is homogeneous without strain stratification phenomenon. Experimental results show that the grain of alloy Al-Mg-Mn is refined by UECAE，which is consistent with the simulation results.

Funds：

国家科技重大专项（2012ZX04003-081）；河南省重大科技专项（131100211000）

赵炯（1988-），男，硕士，工程师

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