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在分析含碳0.61%、含硼1.56%的Fe-C-B合金凝固组织和性能的基础上,研究了淬火温度对其组织和性能的影响。结果表明,Fe-0.61C-1.56B合金凝固组织主要由共晶硼化物、珠光体和铁素体构成,经过950℃~1100℃淬火处理后,共晶硼化物和奥氏体的形态发生变化,基体转变为淬火马氏体,Fe-C-B合金的硬度和韧性较铸态有改善,在1050℃淬火时,合金的硬度和韧性达到最佳。
Based on the analysis of solidified structure and properties of Fe-C-B alloy containing 0.61% carbon and 1.56% boron, the influence of quenching temperature on the microstructure and properties was studied. The results show that the solidified microstructure of Fe-0.61C-1.56B alloy is mainly composed of eutectic borides, pearlite and ferrite. The morphology of eutectic borides and austenite changes after quenching at 950 ℃ ~ 1100 ℃ , The matrix is transformed into quenched martensite. The hardness and toughness of the Fe-CB alloy are improved compared with the as-cast state. When quenched at 1050 ° C, the hardness and toughness of the alloy are optimized.