CAJ | 학술논문

通过在 LF 炉采用 Ti-Mg 复合脱氧的方法,对工业条件下氧化物的长大趋势及对晶内铁素体的诱导析出作用进行了研究。结果表明,在 Ti-Mg 复合脱氧后的1~9 min 内,钢中氧化物数量由4.42×104个/cm2下降为3.21×104个/cm2,氧化物平均尺寸由1.5μm 增至2.30μm。以氧化物作为形核核心形成晶内铁素体。Al 加入钢液中,Ti、Mg 含量迅速降低,氧化物数量减少,尺寸增大,氧化物周围没有晶内诱导铁素体产生。
통과재 LF 로채용 Ti-Mg 복합탈양적방법,대공업조건하양화물적장대추세급대정내철소체적유도석출작용진행료연구。결과표명,재 Ti-Mg 복합탈양후적1~9 min 내,강중양화물수량유4.42×104개/cm2하강위3.21×104개/cm2,양화물평균척촌유1.5μm 증지2.30μm。이양화물작위형핵핵심형성정내철소체。Al 가입강액중,Ti、Mg 함량신속강저,양화물수량감소,척촌증대,양화물주위몰유정내유도철소체산생。
The growth tendency of oxides under industrial conditions and the precipitation-inducing effect of this tendency on intragranular acicular ferrites(IAFs) are studied by using Ti-Mg combined deoxidation method in LF. Test results show that the quantity of oxides in molten steel decreases from 4.42 ×104 /cm2 to 3.21 ×104 /cm2 within 9 minutes by using Ti -Mg combined deoxidation method and the average size of oxides increases from 1.5 μm to 2.30 μm. Finally the intragranular acicular ferrites can be formed as the nucleation core of the oxides. When adding Al into molten steel, the content of Ti or Mg decreases rapidly, while the quantity of oxides decreases, but their size increases and the induced ferrite is not formed around oxides.