【摘 要】
：
采用电阻炉和高频感应炉对过共晶高铬铸铁试样加热至1400℃,重熔后水淬,研究重熔方式对过共晶高铬铸铁凝固组织中初生碳化物和共晶组织的影响。结果表明,与电阻炉重熔方式相
【机 构】
：
昆明理工大学材料科学与工程学院,昆明理工大学分析测试研究中心,
论文部分内容阅读
采用电阻炉和高频感应炉对过共晶高铬铸铁试样加热至1400℃,重熔后水淬,研究重熔方式对过共晶高铬铸铁凝固组织中初生碳化物和共晶组织的影响。结果表明,与电阻炉重熔方式相比较,高频感应重熔试样中初生碳化物显著细化,等效直径由199μm降低到74μm,片层状的共晶碳化物变成粒状,共晶碳化物的网状分布程度减轻,基体的连续性增强。
The samples of hypereutectic high chromium cast iron were heated to 1400 ℃ by electric resistance furnace and high frequency induction furnace. After remelting, the samples were water quenched. The effects of remelting methods on the primary carbides and eutectic microstructures of hypereutectic high chromium cast iron influences. The results show that compared with the remelting method of resistance furnace, the primary carbides in high frequency induction remelted samples are remarkably refined, the equivalent diameter decreases from 199μm to 74μm, the lamellar eutectic carbides become granular and eutectic Carbide network to reduce the degree of distribution, the continuity of the matrix enhanced.
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