摘要
对含Ti的ODS铁素体钢在机械合金化(MA)及随后热固实化过程中,弥散相显著再细化的条件和机制进行了研究。结果表明:在机械合金化过程中,选用合理的工艺参数,所加入预加工粉中的弥散相—Y2O3将首先分解成钇和氧原子,并能均匀地溶入基体中;在随后的热固实化过程中,将以一种更加细小和稳定的复合氧化物—Y2Ti2O7的形式析出,并在钢的基体中分布更加均匀。
As long as rational MA(Mechanical Alloying)processing parameters are selected,the dispersoids(Y 2O 3) added in milled powder matrix with Ti will initially dissolve during MA,then a kind of complex oxide Y 2Ti 2O 7 will precipitate during following hot consolidation process(Usually at 1000 1200 ℃) By this transition,the dispersoids canbe obviously refined from 30 nm(Y 2O 3) to smaller than 10 nm(Y 2Ti 2O 7) and distributed in steel matrix more uniformly
出处
《钢铁》
CAS
CSCD
北大核心
2000年第2期51-55,共5页
Iron and Steel
基金
国家 ( 86 3 )资助项目! ( 86 3 715 0 0 5 0 0 90 )
