V(C,N)中间合金对低合金超高强度钢组织及力学性能的影响  

Influence of Intermediate Alloy on Microstructure and Mechanical Properties of Low-alloy Super-strength Steel

作　　者：吕泉[1] 温浩宇[2] 范博[2] 唐正华[2] 

机构地区：[1]贵州兴义民族师范学院,贵州兴义562400 [2]四川大学材料学院,四川成都610065

出　　处：《铸造技术》2017年第8期1959-1961,共3页Foundry Technology

基　　金：贵州省黔西南州科技项目重大专项资助(2013-3)

摘　　要：将含纳米V(C,N)粉体的中间合金加入到低碳低合金超高强度钢中,采用普通淬火与等温淬火获得不同的组织。结果表明,加入0.36%纳米V(C,N)粉体的中间合金可以有效细化晶粒到3μm,260℃等温淬火可以得到下贝氏体组织,有效提高钢的力学性能。The master alloy with nano-meter V（C,N） was added in molten steel of low carbon mico-alloying to refine grain, water quenching and isothermal quenching process were used to obtain different microstructures. The results show that, when its addition is 0.36%, the master alloy can effectively refine grain to 3 μm. The isothermal quenching at 260 ℃ can obtain lower bainite structure to improve mechanical properties.

关 键 词：中间合金 低合金超高强度钢 等温淬火 

分 类 号：TG142.1[一般工业技术—材料科学与工程] TG161[金属学及工艺—金属材料]