电磁搅拌法制备高铬铸铁半固态组织研究

摘要

To research the effect of electromagnetic stirring on the solidification microstructures of high melting point alloy, KmTBCr20Mo2 high-chrome cast iron was treated by electromagnetic stirring method under the different parameters.The results show that the solidification microstructures of high melting point alloy could be improved through electromagnetic stirring of which power and stirring time all have effects on the microstructure.Under the same stirring power, with the increasing of stirring time, the primary phase will continuously change.When the stirring power is high, great changes of the primary phase will occur in a short time.%为了研究电磁搅拌对高熔点合金组织的影响,在不同工艺条件下对KmTBCr20Mo2高铬铸铁进行电磁搅拌.试验结果表明:电磁搅拌可以有效改变高铬铸铁的组织状态,搅拌功率大小、搅拌时间长短对搅拌效果均存在影响,在相同的电磁搅拌功率条件下,随搅拌时间的延长初生相会不断变化,搅拌功率较大时在较短的搅拌时间内就能够使初生相产生较大的变化.