Applied research of aluminum and titanium deoxidation based on oxide metallurgy technology
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摘要: 通過實驗分析了鈦脫氧的鋼液再采用鋁終脫氧后鋼中夾雜物的形態和成分,并研究了鋼的組織形貌和力學性能.結果表明:Al質量分數為0.015%時,鋼中仍然存在大量的Ti氧化物,Ti氧化物具有促進針狀鐵素體形核的能力,從而使組織得到細化,其沖擊功比不加鋁脫氧鋼提高了33%,證明了鋁終脫氧的可行性.Abstract: The morphology and chemical composition of inclusions were analyzed with experiment in molten steel deoxidized by Al after Ti deoxidation;the structures and mechanical properties of this steel were also studied.It is shown that the type of inclusions in the steel is mainly titanium oxide when the mass fraction of aluminum is 0.015%.Titanium oxide could promote the formation of acicular ferrite which refines the microstructure of the steel.Compared with the steel without Al deoxidation,the impact toughness of the steel deoxidized by Al increases by 33%,proving the feasibility of final aluminum deoxidation.
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Key words:
- steelmaking /
- acicular ferrite /
- inclusion /
- deoxidation
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