摘要
对四种高碳型Fe-Cr-C耐磨堆焊层显微组织中初生碳化物和共晶碳化物的形态进行了研究,分析了碳对显微组织的影响。结果表明:随含碳量的增加或铬碳比的降低,初生碳化物数量越来越多,且共晶碳化物体积增加,生长密度减少。柱状初生碳化物的横截面与纵截面硬度不同,横截面平均硬度为1616.0HV,纵截面的为1186.1HV。碳对耐磨堆焊层的组织起着重要作用。
Microstructure of high carbon Fe-Cr-C series hardfacing alloys was studied. Morphology of primary carbide and eutectic carbide was studied with four kinds of hardfacing alloys. The effect of carbon on microstructure was analyzed. The results show that the quantities of primary carbide got more and more with the increasing of carbon content and with the decreasing of Cr/C. The density of eutectic carbide decreased with the increasing of its volume. The hardness of top section and transverse section of the columnar primary carbide was different, the hardness of transverse section was about 1 616. OHV, and longnitudinal section about 1 186. 1HV. Carbon plays an important role in the formation of the microstructure.
出处
《机械工程材料》
CAS
CSCD
北大核心
2004年第10期23-25,31,共4页
Materials For Mechanical Engineering
关键词
初生碳化物
共晶碳化物
耐磨合金
堆焊
primary carbide
eutectic carbide
hardfacing alloy
welding deposit
