# 铝合金轧制变形时应变的测量及其分布研究

Measurement and distribution of strain during rolling deformation of aluminum alloy
Abstract：This paper on 6061 aluminum alloy respectively by the method of synchronous rolling and cross shear rolling rolling in, the volume difference method weighing a piece in the thickness direction of the rolling strain distribution; at the same time, the deform finite element simulation software to simulate the experiment, the simulated number according to the comparison with the experimental data, which makes the experimental data more credible. The experimental results show that the synchronous rolling in, due to the deformation of the specimen shape coefficient was greater than 1, so the deformation are able to reach the heart and heart than the surface more easily deformed, so the rolling strain distribution is from the surface to the center gradually increased and showed a symmetrical relation; in asynchronous rolling, due to the workpiece in fast and a metal deformation to a far greater extent slow roller side, the metal flow velocity, rolling strain distribution from the slow and fast and the gradual increase of the relationship. And the simulation results are in agreement with the experimental results.
Key words：Aluminum Alloy; rolling; speed ratio; volume difference method; finite element simulation

Abstract： I
1.1 铝及铝合金 2
1.2 轧制 2
1.2.1金属轧制的目的 2
1.2.2异步轧制技术 3
1.2.3异步轧制的使用范围 3
1.2.4异步轧制的不足 3
1.3变形区金属流动规律 4
1.4现有应变的研究现状 4
1.5比容差法测量 5
1.6模拟技术在轧制中的应用 6
1.6.1模拟方法分类 6
1.6.2有限元计算方法 6
1.6.3发展现状及应用 6
1.7选题的意义和目的 7
1.8课题的研究内容和目标 8
2铝合金轧制变形时应变分布的测量与模拟 8
2.1实验测量 8
2.1.1实验方案 8
2.1.2工艺流程 9
2.1.3实验设备 9
2.1.4实验试样 10
2.1.5 实验流程 12
2.1.6实验结果及分析 12
2.2数值模拟 19
2.2.1建立有限元模型 19
2.2.2数值模拟结果及分析 22
2.3实验验证 28
3总结 30

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