【摘要】 将铋锡合金与常见的低熔点金属进行对比，指出其作为冷却介质的可行性，使用冷却介质特性测试仪表征了不同温度状态下铋锡合金的最大冷却速率、最大冷速对应温度等冷却特性，同时利用JMatPro软件模拟计算了铋锡合金密度、粘度数值随温度变化的趋势，采用金相组织观察、力学性能测试等方法研究了铋锡合金淬火工艺对含硼钢组织与性能的影响，确定铋锡合金在含硼钢热处理过程中的最佳工艺。结果表明，铋锡合金熔融状态下物理性质稳定，冷却特性优良，可以作为淬火过程的冷却介质。试验钢在150～200℃铋锡合金中淬火后的综合性能最佳。更多还原

【Abstract】 Bismuth tin alloy is thought suitable as a cooling media after comparing it with common low melting point metals. Thus, the maximum cooling rate and corresponding temperature cooling characteristics of bismuth tin alloy at different temperature states were characterized by using a cooling medium characteristic testing instrument. At the same time, a JMatPro software was used to simulate and calculate the variation of alloy density and viscosity values of bismuth tin with temperature. Metallographic observation and mechanical properties measurement was conducted to investigate the effect of quenching process on the microstructure and properties of boron containing steel.The results show that the bismuth tin alloy has stable physical properties and excellent cooling characteristics in the molten state, and can be used as a cooling media for the quenching process. The experimental steel can be achieved the best comprehensive performance after it is quenched in a bismuth tin alloy at 150-200 ℃.更多还原