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第9期 王海涛等：帘线钢凝固过程中夹杂物析出 .889. ide on the reaction bet ween oxide and sulfur during solidification of aluminum steels//Proceedings of the 4th International Conference steels.ISIJ Int.1995.35:1477 on Clean Steel.Balatonszeplak.1992:638 [2]Goto H.Miyazawa K.Yamaguchi K.et al.Effect of cooling rate [8]Ohnaka I.Mathematical analysis of solute redistribution during on oxide precipitation during solidification of low carhon steels. solidification with diffusion in solid phase.Trans ISIJ.1986.26. 1SL1t,1994,34:414 1045 [3]GOTO H,Miyazawa K,Honma H.Effect of the primary oxide [9]Inoue R.Suito H.Composition and morphology of inclusions pre- on the behavior of the oxide precipitating during solidification of cipitated during solidification//Proceedings of 2nd Japan-Canada steel.ISIJ Int.1996.36:537 Symposium on Modern Steelmaking and Casting Techniques [4]Guo M,Suito H.Influence of dissolved cerium and primary inclu- Tronto,1994:221 sion particles of Ce2Os and CeS on solidification behavior of Fe- [10]MaZ,Janke D.Characteristics of oxide precipitation solidifica- 0.20 mass%C-0.02 mass%P alloy.ISIJ Int.1999,39:722 tion of deoxidized steel and growth during.ISIJ Int.1998.38. [5]Wintz M,Bobadilla M.Lehmann J.et al.Experimental study 46 and modeling of the precipitation of non metallic inclusions during [11]Lehmann J.Rocabois P.Gaye H.Kinetic model of non metallic solidification of steel.ISIJ Int.1995.35:715 inclusions precipitation during steel solidification.J Non Cryst [6]Wintz M,Bobadilla M.Lehmann J.et al.Experimental study Solids,2001,282:61 and modeling of the precipitation of non metallic inclusions during [12]Shim J H.Oh Y J.Suh J Y,et al.Nucleation of intragranular solidification of steel.ISIJ Int.1993,19:313 ferrite at Ti203 particle in low carbon steel.Acta Mater.1999. [7]Gatellier C.Gaye H.Lehmann J.et al.Inclusions control in low- 47:2751 Inclusion precipitation in tire cord steel during solidification WA NG Haitao,XU Zhongbo,WA NG Fuming Metallurgical and Ecological Engineering School.University of Science and Technology Beijing.Beijing 100083.China ABSTRACI To understand inclusions in tire cord steel,the solidification process has been analyzed and the conclusions draw n as follows.Al2O3 precipitates earlier during solidification and the growth rate depends on the diffusion of [Al]in molten steel;SiO2 begins to precipitate when the solidification fraction is 0.44,and the growth rate depends on the diffusion of [O].The inclusion radius increases with the decrease of cooling rate, the radii of Al2O3 and Al2O3SiO2 inclusions are 2.5m and 4.7m,respectively,after solidification as the cooling rate is 100Kmin.SiO2 content increases and Al203 content decreases during solidification. KEY WORDS tire cord steel;inclusion:solidification;precipitationide on the reaction between oxide and sulfur during solidification of steels．ISIJ Int199535：1477 ［2］ Goto HMiyazawa KYamaguchi Ket al．Effect of cooling rate on oxide precipitation during solidification of low carbon steels． ISIJ Int199434：414 ［3］ GOTO HMiyazawa KHonma H．Effect of the primary oxide on the behavior of the oxide precipitating during solidification of steel．ISIJ Int199636：537 ［4］ Guo MSuito H．Influence of dissolved cerium and primary inclusion particles of Ce2O3 and CeS on solidification behavior of Fe－ 0∙20mass％C－0∙02mass％P alloy．ISIJ Int199939：722 ［5］ Wintz MBobadilla MLehmann Jet al．Experimental study and modeling of the precipitation of non-metallic inclusions during solidification of steel．ISIJ Int199535：715 ［6］ Wintz MBobadilla MLehmann Jet al．Experimental study and modeling of the precipitation of non-metallic inclusions during solidification of steel．ISIJ Int199319：313 ［7］ Gatellier CGaye HLehmann Jet al．Inclusions control in lowaluminum steels∥Proceedings of the4th International Conference on Clean Steel．Balatonszéplak1992：638 ［8］ Ohnaka I．Mathematical analysis of solute redistribution during solidification with diffusion in solid phase．Trans ISIJ198626： 1045 ［9］ Inoue RSuito H．Composition and morphology of inclusions precipitated during solidification∥Proceedings of 2nd Japan-Canada Symposium on Modern Steelmaking and Casting Techniques． Tronto1994：221 ［10］ Ma ZJanke D．Characteristics of oxide precipitation solidification of deoxidized steel and growth during．ISIJ Int199838： 46 ［11］ Lehmann JRocabois PGaye H．Kinetic model of non-metallic inclusions’precipitation during steel solidification．J Non Cryst Solids2001282：61 ［12］ Shim J HOh Y JSuh J Yet al．Nucleation of intragranular ferrite at Ti2O3particle in low carbon steel．Acta Mater1999 47：2751 Inclusion precipitation in tire cord steel during solidification WA NG HaitaoXU ZhongboWA NG Fuming Metallurgical and Ecological Engineering SchoolUniversity of Science and Technology BeijingBeijing100083China ABSTRACT To understand inclusions in tire cord steelthe solidification process has been analyzed and the conclusions drawn as follows．Al2O3precipitates earlier during solidification and the growth rate depends on the diffusion of ［Al］ in molten steel；SiO2 begins to precipitate when the solidification fraction is 0∙44and the growth rate depends on the diffusion of ［O］．The inclusion radius increases with the decrease of cooling rate the radii of Al2O3 and Al2O3－SiO2 inclusions are 2∙5μm and 4∙7μmrespectivelyafter solidification as the cooling rate is100K·min －1．SiO2content increases and Al2O3content decreases during solidification． KEY WORDS tire cord steel；inclusion；solidification；precipitation 第9期 王海涛等： 帘线钢凝固过程中夹杂物析出 ·889·