李飞,黎振华,赵国荣,何正员

• 1:昆明理工大学城市学院
• 2:昆明理工大学材料科学与工程学院
• 3:金属先进凝固成形及装备技术国家地方联合工程实验室

摘要(Abstract)：

利用OM、XRD、SEM、宏观硬度测试与冲击磨料磨损试验,研究Fe-xC-1.5B合金(x=0.6mass%~1.5mass%)的微观组织演变以及硬度与耐磨性的变化规律。结果表明:Fe-xC-1.5B合金的凝固组织主要由α-Fe、Fe_3C和共晶硼化物或者硼碳化物(Fe_2B、Fe_3(C,B)和Fe_(23)(C,B)_6)组成,共晶硼化物和硼碳化物分别呈鱼骨状和菊花状分布;随着碳含量的增加,共晶硼化物或者硼碳化物明显增多,合金的硬度为40~47HRC、相对耐磨性是亚共晶高铬铸铁的0.9~1.3倍,表现出优异的耐磨性。

关键词(KeyWords)： Fe-C-B合金;微观组织;硬度;耐磨性

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(50701020)

作者(Author): 李飞,黎振华,赵国荣,何正员

DOI: 10.13289/j.issn.1009-6264.2017-0507

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