锻压技术

2B06铝合金电磁成形试验研究

英文标题：Experimental study on electromagnetic forming for 2B06 aluminum alloy

作者：崔丽1 杜建宁1 张超1 樊彬彬1 石全强2 张浩1

分类号：V261.23

出版年,卷(期):页码：2022,47(1):106-114

摘要：

为探究航空用2B06铝合金在不同应变速率下的力学性能和电磁成形性能，开展了不同应变速率下的力学性能测试和电磁胀形及翻边试验。结果表明，两种热处理状态下的板材均表现为：随着应变速率的提升，材料的延展性有显著提升，但即使在高应变速率下，T态板材的延展性能仍低于O态板材。随后基于电磁成形平台，进行了指定特征的电磁胀形和电磁翻边试验，通过测量距离模具间隙、减薄和硬度等，分析了2B06铝合金在不同热处理状态下的成形规律，其中胀形和跑道型翻边特征存在圆角和直壁过渡区域，表现为更复杂的变形行为，距离模具间隙大且减薄严重，尤其在延展性较差的T态板材的工艺设计中需要重点关注。

In order to investigate mechanical properties and electromagnetic forming properties of 2B06 aluminum alloy used in aviation region under different strain rates, the mechanical performance tests and electromagnetic bulging and flanging tests under different strain rates were conducted. The results show that the ductility of the sheets under two heat-treated states is significantly enhanced with the increasing of strain rate, and the ductility of the T-state sheet is still lower than that of the O-state sheet even at higher strain rates. Subsequently, electromagnetic bulging and electromagnetic flanging tests with specific features were carried out based on the platform of electromagnetic forming, and the forming laws of 2B06 aluminum alloy under different heat treatment states were analyzed by measuring die fitting gap, thinning and hardness. Among them, the bulging and racetrack-shaped flanging features had the transition areas of rounded corners and straight wall, which showed more complicated forming behaviors, larger fitting die gaps and serious thinning. Especially in the process design of the T-state sheet with lower ductility, they needed to be focused on.

基金项目：

沈阳市科技计划项目（20-203-5-31）

作者简介：崔丽（1982-），女，博士，高级工程师 E-mail：cuil008@avic.com

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