摘要
通过形核理论解释了IF钢中Al2O3-Ti N的形成机理。RH中加TiFe合金化后由于局部wTi.wN浓度积有很大的过饱和度,满足异质形核条件,Ti N会以钢液中Al2O3为核心生成Al2O3-Ti N复合夹杂,但此时的Ti N并不稳定会随着钢液中wTi浓度的均匀而发生分解,在凝固过程中由于温度的降低和wTi的偏析会在凝固前沿Ti N再次析出。
The formation mechanism of Al2O3-TiN inclusion was explained through the nucleation theory.The concentration product（wTi·wN） is so large that the TiN will precipitate on the Al2O3 surface after adding the TiFe alloy in RH.But the TiN is instable,it will decompose when the wTi concentration is uniform.TiN will precipitate once again in the solidification process due to the decrease of temperature and the segregation of wTi concentration.
出处
《钢铁研究学报》
CAS
CSCD
北大核心
2010年第7期29-32,55,共5页
Journal of Iron and Steel Research
基金
"十一五"国家科技计划支撑资助项目(2006BAE03A06)
关键词
IF钢
形核
夹杂物
interstitial-free（IF） steel
nucleation
inclusion
