研究淬火温度对含碳量小于0.4%和含硼量小于2.0%的高硼铸钢显微组织和硬度的影响.高硼铸钢铸态基体组织由珠光体和铁素体组成.淬火处理后,硼化物数量变化不明显,随着淬火温度升高,基体显微硬度和试样宏观硬度提高,淬火温度超过1000℃后,硬度略有降低.在900~1100℃内淬火,都可获得强韧性好的板条马氏体基体组织.高硼铸钢中的硼化物显微硬度超过1500HV,由Fe2B和少量FeB组成.
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