采用Gleeble-1500热/力模拟机,对电磁搅拌法制备的高碳(碳含量大于1 %)工具钢半固态坯料进行压缩实验,研究半固态高碳钢在不同变形温度、不同变形速率下的应力-应变关系,同时与相同冷却条件下的常规铸态坯料进行了对比分析.结果表明:在固-液两相区变形时,半固态坯料的流变应力明显低于常规铸态坯料,且随温度的升高而降低;当变形速率降低时,应力峰值升高,同时热软化现象明显.
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