锻压技术

AZ31镁合金板材等温弯曲实验研究

英文标题：Experimental study on isothermal bending of magnesium alloy AZ31 sheet

作者：王忠堂翟梽锦

单位：沈阳理工大学

关键词：AZ31镁合金等温弯曲模具

分类号：TG301

出版年,卷(期):页码：2016,41(5):20-23

摘要：

对AZ31镁合金板材的等温弯曲变形过程进行了数值模拟，分析了其变形特点以及金属流动规律，确定了合理的变形参数，即弯曲凸模半径为8 mm，凸模间距为38 mm。同时，研制了AZ31镁合金板材的等温弯曲实验装置,并对AZ31镁合金板材在不同变形温度下进行了不同道次的等温弯曲实验研究，分析了镁合金板材微观组织的变化规律。AZ31镁合金板材经过等温弯曲变形后，其室温伸长率达到17.1%，而原始AZ31镁合金板材的室温伸长率为12.4%，提高了42%。

Isothermal bending technology(IBT) of magnesium alloy AZ31 sheet was numerically simulated, and its deformation property and flow rule were analyzed. Therefore, the reasonable deformation parameters were determined with radius of punch 8 mm and distance between two punches 38 mm. Then, the isothermal bending experiment device for magnesium alloy AZ31 sheet was designed and manufactured. The isothermal bending experiments of magnesium alloy AZ31 sheet were carried out at different deformation temperatures, and its microstructure and properties were analyzed. After magnesium alloy AZ31 sheet was deformed by IBT, its elongation was up to 17.1% at room temperature, while the elongation of initial magnesium alloy sheet was only 12.4%. Thus, the former increased by 42% more than the latter.

基金项目：

国家自然科学基金资助项目(51575366)

王忠堂（1962-），男，博士，教授

参考文献：

［1］李潇, 杨平, 孟利, 等. AZ31镁合金中拉伸孪晶静态再结晶的分析[J]. 金属学报, 2010, 46(2):147-154.Li X, Yang P, Meng L, et al. Analysis of the static recrystallization at tension twins in AZ31 Magnesium alloy[J]. Acta Metallurgica Sinica, 2010, 46(2):147-154.
［2］张雷, 杨续跃, 霍庆欢. AZ31镁合金板材低温双向反复弯曲变形及退火过程的组织演化[J]. 金属学报, 2011, 47(8): 990-996. Zhang L, Yang X Y, Huo Q H. Structure evolution of AZ31 Mg alloy sheet during bidirectional cyclic bending at low temperature and subsequent annealing[J]. Acta Metallurgica Sinica, 2011, 47(8): 990-996.
［3］Huang G S, Zhang H, Gao X Y. Forming limit of textured AZ31B magnesium alloy sheet at different temperatures [J]. Transactions of Nonferrous Metals Society of China, 2011, 21(4): 836-843.
［4］Huang G S, Zhang L, Song B, et al. Cold stamping for AZ31B magnesium alloy sheet of cell phone house [J]. Transactions of Nonferrous Metals Society of China, 2010, 20(2): 608-612.
［5］Yang Q, Ghosh A K. Deformation behavior of ultra fine-grain AZ31B Mg alloy at room temperature [J]. Acta Materialia, 2006, 54(19): 5159-5170.
［6］Yang Q, Ghosh A K. Production of ultrafine-grain microstructure in Mg alloy by alternate biaxial reverse corrugation [J]. Acta Materialia, 2006, 54(19): 5147-5158.
［7］Zhang D T, Xiong F. Superplasticity of AZ31 magnesium alloy prepared by friction stir processing [J]. Transactions of Nonferrous Metals Society of China, 2011, 21(9): 1911-1916.
［8］马康. 镁合金板材循环弯曲成形组织演变及力学性能研究[D]. 沈阳：沈阳理工大学，2012.Ma K. Study on the Microstructure Evolution and Mechanical Properties of AZ31 Magnesium Alloy by Isothermal Cyclic Bending[D]. Shenyang: Shenyang Ligong University,2012.

服务与反馈：

【文章下载】【加入收藏】