硼对贝-马抗磨球铁组织及性能的影响  

Influence of Boron on Structure and Properties of Anti-Wear Bainite-Martensite Nodular Iron

作　　者：孙玉福[1] 汤文博[1] 

机构地区：[1]郑州大学材料工程学院,河南郑州450002

出　　处：《现代铸铁》2002年第3期18-21,共4页Modern Cast Iron

摘　　要：通过试验研究了硼对贝氏体-马氏体抗磨球铁组织及性能的影响。试验结果表明:在正常球化元素含量(wB:0.035%～0.040%Mg,0.025%～0.030%RE)下,硼小于0.050%,可保证石墨球化。且随含硼量增加,材料硬度升高,冲击韧度下降。当硼含量为0.015%～0.030%时,材料获得了硬度和冲击韧度的良好匹配。Through the experiment the influence of boron on structure and properties of anti-wear bainite-martensite nodular iron was investigated.The results showed that when contents of the nodulizing elements were in the normal range(Mg of0.035%～0.040%;RE of0.025%～0.030%),the nodularization of graphite could be guaranteed.With increasing of boron content the hardness in-creased,and the impact toughness decreased.A good matching of hardness and impact toughness could be achieved with the boron content was of0.015%～0.030%.

关 键 词：抗磨球墨铸铁 组织 性能 

分 类 号：TG143.5[一般工业技术—材料科学与工程] TG255[金属学及工艺—金属材料]