【摘要】 研究了稀土变质和稀土加钒变质对离心铸造高速钢轧辊的显微组织及力学性能的影响,测定了其最终热处理后的碳化物类型,结果表明,采用0.3%稀土变质处理对碳化物的形状、分布改善效果不明显,但可以促进加热过程中网状碳化物的球团化;采用稀土加钒变质对碳化物的形状、大小和分布改善情况较好。经过最终热处理后,高速钢中的碳化物类型为MC和M6C型。更多还原

【Abstract】 In this article, the investigation was made for the effect of the RE and RE-V modification on the microstructure and mechanical properties of high speed steel rolls produced by the centrifugal casting machine . Style of carbides was determined after heat treating. The results revealed that the shape and distribution of carbide are not evident modified with 0.3% RE, but which can improve spheroidization of network carbide while it is heated. When modified with RE-V the improvement of the shape and distribution of carbide is good. The styles of carbide are MC and M6C.更多还原