研究了含铌16Mn钢奥氏体化过程中第二相粒子的固溶析出及阻止晶粒长大的规律,并给出了奥氏体中的NbC固溶度积与温度的函数关系.结果发现,在氮含量较低的含铌16Mn钢中,铌的析出相以NbC为主.经试验确定钢的晶粒粗化温度(tGC)为1100 ℃,tGC与第二相粒子的全固溶温度(ts)之间存在一定的线性关系.
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