利用透射电镜(TEM)和扫描电镜(SEM)研究了不同耐磨堆焊层的显微组织特征.通过与实际工况磨损状态和堆焊层硬度测试数据对比分析,发现高铬铸铁耐磨堆焊层的显微组织,如硬质相的形态、尺寸和分布、基体相的性质等是决定其耐磨性的主要因素,而不是一般认为的硬度因素.
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