碳和氮含量对V(C,N)在形变奥氏体中析出的影响  

Effect of C and N Content on the Behavior of V(C,N) Precipitate in Deformed Austenite

作　　者：方芳[1] 尹云洋[1] 雍岐龙[2] 

机构地区：[1]武汉钢铁集团公司研究院,湖北武汉430080 [2]钢铁研究总院结构材料研究所,北京100081

出　　处：《钢铁》2011年第3期60-65,共6页Iron and Steel

基　　金：国家自然科学基金资助项目(50441032)

摘　　要：采用Thermo-Calc和经典动力学理论对2组碳、氮含量的中碳V-N微合金化钢分别进行了热力学和动力学分析,研究了V（C,N）在形变奥氏体中的析出规律。结果表明：在1 000-800℃温度区间变形时,形变储能ΔGs的存在导致V（C,N）的形变诱导析出;当氮的质量分数增加0.005%时,V（C,N）的析出开始时间（5%析出量）缩短近1个数量级;当氮的质量分数较高时（大于0.01%）,碳含量对V（C,N）在奥氏体中析出行为的影响几乎可以忽略。Two groups of medium V-N microalloyed steel with different carbon and nitrogen contents were calculated by Thermo-Calc and classical dynamic theories to predict the rules for V（C,N） precipitate in deformed austenite.The results indicate that,when deformed in a temperature range of 1 000-800 ℃ the existence of ΔGs causes the strain induced precipitation of V（C,N）;as nitrogen content increases by 0.005%,the precipitation-start time can be shorted by one order;when nitrogen content is more than 0.01%,the effect of carbon content on the behavior for V（C,N） precipitate in austenite can be neglected.

关 键 词：含钒钢 形变 析出 

分 类 号：TG142.15[一般工业技术—材料科学与工程]