温度对铝合金电磁铸造组织及成分的影响

Effect of temperature on the structure and composition of electromagnetic casting of aluminum alloy

以铝合金作为实验材料,开展了初始熔体温度对电磁铸造组织及成分的作用规律研究。结果表明,初始温度会直接影响铸锭凝固组织和合金元素偏析的改善效果,在700 ℃的水冷条件下,得到的晶粒组织为细小均匀的等轴晶粒组织,在合金的电磁铸造过程中,只有在合适的初始熔体温度条件下,才能最大限度地发挥磁场的细晶效果。

The effect of initial melt temperature on the structure and composition of electromagnetic casting was studied with aluminum alloy as experimental material.The results show that the initial temperature will directly affect the improvement effect of ingot solidification structure and alloying element segregation.Under the water-cooled condition of 700℃,the obtained grain structure is fine and uniform equiaxed grain structure.In the electromagnetic casting process of the alloy,the fine crystal effect of magnetic field can be maximized only under the appropriate initial melt temperature.