With the aid of extraction complex of C thin film,TEM and energy dispersion X-ray spectrum(EDX),the dissolve rule of Nb,V and Ti in Nb-V-Ti and V-Ti microalloyed steel was studied by isothermal holding at different temperatures and for different time.

• 通过萃取复形薄膜的方法,采用高分辨透射电镜和能量色散X射线光谱技术,研究了Nb-V-Ti和V-Ti微合金钢中,Nb、V、Ti的碳氮化物在不同温度和不同时间下保温时的回溶情况。