通过碳热还原氮化法合成了不同钛含量的(V,xTi) (C,N)(x=5％、10％、15％(质量分数))固溶体粉末晶粒细化剂,并考察了它们对WC-8％Co硬质合金显微组织和机械性能的影响.结果表明,与V(C,N)或者V(C,N) /Ti(C,N)混合晶粒细化剂相比,(V,Ti)(C,N)固溶体粉末可以显著地提高WC-8％Co 硬质合金的机械性能；当加入0.5％(质量分数)的(V,5Ti) (C,N)固溶体粉末时,WC-8％Co硬质合金的抗弯强度和硬度分别达3490MPa、1804HV30,WC平均晶粒尺寸约为0.5～0.6μm.
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