研究了油冷淬火条件下,不同淬火温度对含8％ Cr、1.5％B和1.5％ Al的Fe-Cr-B-Al合金显微组织和性能的影响.结果表明,合金铸态组织由M2(B,C)(M =Fe,Cr,Mn)、(Cr,Fe)7(C,B)3、马氏体和珠光体组成.淬火处理后,硼碳化物出现了明显的孤立和团球化现象,导致合金抗拉强度和冲击韧性增加.淬火温度超过950℃时,基体转变成马氏体,导致合金硬度升高.淬火温度超过1050℃后,硼碳化物出现粗化现象.合金在1050℃淬火时,综合性能良好.
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