摘要
提出了一种制备硬质合金-钢复合材料的新工艺——埋弧自动堆焊工艺。应用该方法成功制备了硬质合金增强钢基复合材料。利用SEM、EDS、XRD等检测手段对复合材料结合界面的显微组织、物相组成进行了分析,并对复合材料的宏观硬度进行了测试。通过常温三体磨料磨损实验研究了复合材料的磨损性能。研究表明:硬质合金与钢基体为明显的冶金结合;硬质合金与钢基体间硬度过渡均匀;复合材料的相对耐磨性达正火态45钢的3.7倍。
A new method of submerged arc automatic welding was proposed, The cemented carbide/steel bimetal composite was successfully prepared. The interface microstructure and phase composition of the bimetal composite were analyzed by SEM, EDS and XRD and the macrohardness was measured. The three-body abrasive wear experiment was performed at the room temperature. The results show that the interface of the composite is a perfect metallurgical combination. There is a homogeneous weld pad between the cemented carbide and the steel matrix. The relative wear resistance of the bimetal composite is 3.7 times as great as the normalized 45 steel.
出处
《热加工工艺》
CSCD
北大核心
2008年第19期21-24,共4页
Hot Working Technology
关键词
埋弧自动堆焊
硬质合金
复合材料
三体磨料磨损
submerged arc automatic welding
cemented carbide
composites
three-body abrasive wear
