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在自行设计、安装的水平式双辊连续铸轧机上进行了AZ31B镁合金电磁铸轧试验,成功试制出3mm×200mm×Lmm的AZ31B镁合金铸轧板,研究了电磁场对铸轧板组织及力学性能的影响。结果表明,在AZ31B镁合金铸轧过程中施加电磁场能显著细化铸轧板的晶粒组织,晶粒平均尺寸由不加电磁场的28～30μm减小至12μm左右;板坯力学性能也得到有效改善,抗拉强度、屈服强度、伸长率和硬度分别提高了16.3%、28.7%、50%和17.1%。
The AZ31B magnesium alloy was electromagnetically cast on a horizontal two-roll continuous casting machine designed and installed by ourselves. The AZ31B magnesium alloy cast plate with a size of 3mm × 200mm × Lmm was successfully manufactured. The effects of electromagnetic field on the microstructure and mechanical properties of the cast- The impact of performance. The results show that the grain size of the cast-rolled plate can be remarkably refined by applying electromagnetic field during the process of AZ31B magnesium alloy casting and rolling, and the average grain size decreases from 28-30μm without electromagnetic field to about 12μm. The mechanical properties of the slab are also effective Improvement, tensile strength, yield strength, elongation and hardness increased by 16.3%, 28.7%, 50% and 17.1% respectively.