采用金相﹑扫描电镜和力学性能分析方法研究了热处理对含稀土低铬耐磨铸钢力学性能的影响。结果表明：低铬耐磨铸钢的冲击韧性（αk）及抗弯强度（σbb）随加热温度的变化较明显；而硬度(HRC)受加热温度影响较小，当加热温度为970 ℃，保温2 h正火后，该材料具有良好的综合力学性能。
The influence of heat treatment on mechanical properties of low chromium wear resistant cast steel containing rare earth elements was studied by means of metallographic examination, scanning electron microscopic examination and mechanical property test. The experiments results showed that heating temperature has great effect on impact toughness（α k）and bending fatigue（σ bb）, but little effect on hardness (HRC). When the specimen was hold at 970 ℃ for 2 h, it has better comprehensive mechanical properties.
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