摘要
针对V-Ti微合金钢,采用透射电镜分析了不同加热温度下微合金碳氮化物的溶解,未形变与形变奥氏体在不同冷却温度下碳氮化物的析出。结果表明,钒的碳氮化物在860￣900℃时大量溶解,钛的碳氮化物在900℃以上逐渐溶解;随着冷却温度的逐渐降低,析出相逐渐增多、尺寸减小,在1200￣950℃时主要是微合金元素钛的碳氮化物析出;奥氏体区的高温形变促进微合金碳氮化物的析出,使奥氏体内的析出量增多、尺寸细小。
For V-Ti microalloy steel, the dissolution of microalloy carbonitride at different heating-up temperature and the precipitation of carbonitride in deformed and undeformed austanite at different cooling temperature were analyzed using the TEM. The results show that carbonitride of V dissolve in large quantities at the heating-up temperature range of 860～900℃, and the carbonitride of Ti dissolve gradually over 900℃ ; the precipitated phase increase gradually and the size decrease with the gradual decrease of cooling temperature, and the most carbonitride precipitation is microalloy element of Ti at the temperature range of 1200～950℃; The deformation at high temperature in anstenitic region promote the precipitation of microalloy carbonitride, which increase the amount and refine the size of educt in austenite.
出处
《热加工工艺》
CSCD
北大核心
2006年第8期58-61,共4页
Hot Working Technology
关键词
V-Ti微合金钢
碳氮化物
溶解
析出
V-Ti microalloy steel
carbonitride
dissolve
precipitation
