摘要
针对镁合金板坯轧制过程中出现的边裂问题,结合稀土元素改善合金组织的特性。镁合金中先添加不同量的Sm(钐元素),然后进行铸造挤压制成坯料,再分别进行冷轧和温轧实验,分析轧后镁合金板坯组织和力学性能。研究表明:温轧和冷轧条件下,添加稀土元素Sm后镁合金板坯轧制边裂问题得到了较好的改善;随着稀土元素Sm添加量的增大,镁合金板坯的屈服强度增大,延伸率减小。
The edge cracks of Mg alloy sheet occur frequently during rolling.On the basis of the ability of lanthanon to improve alloy's structure,different amount of Sm was added in the magnesium alloy.Then the alloy was cast and extruded into composite.The microstructure and mechanical properties of the rolled magnesium alloy slab were analyzed after cold rolling and warm rolling separately.Research shows that:During the cold and worm rolling,the edge crack of magnesium alloy slab was overcome with the addition of Sm.With the increase in the addition of Sm,the yield strength and elongation of magnesium alloy slab decreased,while its elongation decreased.
引文
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