固相反应生成VC颗粒增强铁基复合材料  

Iron Matrix Composite Reinforced by VC Particulates Produced by Solid Reaction

作　　者：王一三[1] 丁义超[1] 程凤军[1] 石建国[1] 赖丽[1] 

机构地区：[1]四川大学制造学院,四川成都610065

出　　处：《热加工工艺》2004年第9期9-11,14,共4页Hot Working Technology

摘　　要：用粉末冶金方法 ,使 (Fe- V合金 +石墨 )反应体系在较低温度的固态条件下进行碳化反应和烧结致密化 ,发现石墨的存在降低了 σ- (Fe V)相的稳定性 ,促使其在 80 0℃就分离出少量 α- Fe相和金属 V,并且该体系在 95 0℃即可进行固相反应 ,生成由马氏体基体和大量亚微米级的 V8C7球状颗粒组成的铁基复合材料 。Using the powder metallurgical technology,the carbonized reaction and sintering compaction of Fe-V alloy and graphite was carried out on the solid state condition. It is found that the stability of σ-(FeV) is down, the α-Fe and metal V are separated at 800℃,and the ferrous matrix composite consisting of a large number of superfine V_8C_7 spherical particles synthesized at 950℃ and the martensitic matrix possesses great wear-resistance under the condition of dry slipping with a heavy load.

关 键 词：固相反应 原位内生 复合材料 

分 类 号：TF125.1[冶金工程—粉末冶金]