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.
出处
《钢铁》
CAS
CSCD
北大核心
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)
关键词
含钒钢
形变
析出
V microalloyed steel
deformation
predipitation
