淬火工艺对Fe-V-W-Mo合金组织和性能的影响  

Effects of quenching process on structures and properties of Fe-V-W-Mo alloy

作　　者：杜忠泽[1] 符寒光[2] 杨军[1] 

机构地区：[1]西安建筑科技大学冶金工程学院,陕西西安710055 [2]清华大学先进成形制造重点实验室,北京100084

出　　处：《材料热处理学报》2006年第1期63-67,共5页Transactions of Materials and Heat Treatment

基　　金：陕西省自然科学基金(2003E121);陕西省教育厅专项基金(01JK171)联合资助

摘　　要：在测试了Fe5%V5%W5%Mo5%Cr3%Nb2%Co2%C(FeVWMo)合金的临界点和CCT曲线基础上,研究了淬火温度、淬火冷却方式对该合金组织和性能的影响。研究结果表明,FeVWMo合金油冷淬火温度低于1025℃,随淬火温度升高硬度升高,超过1050℃,硬度反而降低。雾冷和空冷淬火时,淬火温度对硬度影响结果相似,获得最高硬度的淬火温度高于油冷时的淬火温度。FeVWMo合金油冷淬火淬透性最好,雾冷次之,空冷最差,但是油冷和雾冷差别不大。FeVWMo合金红硬性和韧性随淬火温度升高而提高,超过1150℃时,韧性反而降低。最后讨论了FeVWMo合金在不同淬火冷却条件下组织和性能变化的原因。Based on the measurements of critical points and CCT curves of Fe-5%V-5%W-5%Mo-5%Cr-3%Nb-2%Co-2%C(Fe-V-W-Mo) alloy, the effects of quenching temperature and quench-cooling methods on the microstructures and properties of the Fe-V-W-Mo alloy were researched. The results show that the hardness of Fe-V-W-Mo alloy increases until the quenching temperature reaches 1025℃ and drops down as the quenching temperature exceeds 1050℃ when cooled in oil. The hardness exhibits the similar tendency in the condition of air cooling and spray cooling, and the temperature at which the highest hardness is obtained moves to a higher range for slower cooling process. The red hardness and toughness of Fe-V-W-Mo alloy increase with the increase of quenching temperature until 1150℃, and then the toughness drops. The mechanism of effects of quenching process on microstructure and properties of Fe-V-W-Mo alloy is discussed.

关 键 词：Fe—V—W—Mo合金 淬火工艺 硬度 红硬性 韧性 

分 类 号：TG161.8[金属学及工艺—热处理] TG156.3[金属学及工艺—金属学]