添加稀土的WC-20(Fe/Co/Ni)硬质合金的研究

Research of WC-20(Fe/Co/Ni) Cemented Carbide with Rare-Earth Additions

摘要: 在铁镍部分代钴的基础上,实验添加不同量稀土,结果表明,加入适量稀土可使合金的抗弯强度的提高最大幅度达5.8%;硬度增加0.2~2.0HRA。同时,对稀土强化铁镍代钴硬质合金的机理进行了初步探讨。

Abstract: The cemented carbides in which Co is replaced by Ni,Fe and Re is added are studied.The results shows that its bending strength is improved in some extent,its maximum improving amplitude is 6.9%,its hardness is improved 0.5~2.0HRA.The strengthening mechanism han been discussed.