高Al含量TRIP钢在连铸过程中钢液中的[Al]易与保护渣中的SiO2发生反应,使保护渣中Al2O3含量从3%快速增加至30%左右,导致保护渣的传热性能发生改变,影响连铸坯的质量和连铸工艺操作.利用结晶器保护渣渣膜热流模拟仪研究Al2O3含量对Al-TRIP钢保护渣传热的影响,并利用扫描电镜、X射线衍射仪分析渣膜的结晶相.结果表明:当Al2O3含量从3%增加到20%时,保护渣的热流密度显著降低;当保护渣的Al2O3含量从20%增加到30%时,保护渣的热流密度先增加后减少;随w(Al2O3)/w(SiO2)比值的增大热流密度逐渐降低,并且在本实验条件下保护渣中会析出CaF2晶体.
参考文献
| [1] | De Cooman BC .Structure-properties relationship in TRIP steels containing carbide-free bainite[J].Current opinion in solid state & materials science,2004(3/4):285-303. |
| [2] | Yinghui Zhang,Yanli Ma,Yonglin Kang,Hao Yu.Mechanical properties and microstructure of TRIP steels produced using TSCR process[J].北京科技大学学报（英文版）,2006(05):416-419. |
| [3] | M. De MEYER .The Influence of the Substitution of Si by Al on the Properties ofCold Rolled C-Mn-Si TRIP Steels[J].ISIJ International,1999(8):813-822. |
| [4] | Dong-Woo Suh;Seong-Jun Park;Chang-Seok Oh .Influence of partial replacement of Si by Al on the change of phase fraction during heat treatment of TRIP steels[J].Scripta materialia,2007(12):1097-1100. |
| [5] | JEFFREY J B;MAUREEN A M;THINIUM T N.Liquid/solid interactions during continuous casting of high-Al advanced Ingh-strength steels[A].Charlotte North Carolina,USA:Association for Iron and Steel Technology,2005:99-106. |
| [6] | Stuart Street;Keegan James;Nicole Minor .Production of High-Aluminum Steel Slabs[J].Iron & Steel Technology,2008(7):38-49. |
| [7] | 尹玉服,娄青春,温铁光.结晶器中渣钢界面反应机理的研究[J].鞍钢技术,2002(01):25-27. |
| [8] | WANLIN WANG;KENNETH BLAZEK;ALAN CRAMB .A Study of the Crystallization Behavior of a New Mold Flux Used in the Casting of Transformation-Induced-Plasticity Steels[J].Metallurgical and Materials Transactions, B. Process metallurgy and materials processing science,2008(1):66-74. |
| [9] | S.Sridhar;K.C.Mills .Break temperatures of mould fluxes and their relevance to continuous casting[J].Ironmaking & Steelmaking: Products and applications,2000(3):238-242. |
| [10] | CHO J;EMIT .Heat transfer across mold film in mold during initial solidification in continuous casting of steel[J].ISIJ International,1999,39(08):843-842. |
| [11] | A. Yamauchi;K. Sorimachi;I. Yamauchi .Effect of solidus temperature and Crystalline phase of mould flux on heat transfer in continuous Casting mould[J].Ironmaking & Steelmaking: Products and applications,2002(3):203-207. |
| [12] | Rajil SARASWAT;Daan M. MAIJER;Peter D. LEE .The Effect of Mould Flux Properties on Thermo-mechanical Behaviour during Billet Continuous Casting[J].ISIJ International,2007(1):95-104. |
| [13] | J.Cho .Thermal Resistance at the Interface between Mold Flux Film and Mold for Continuous Casting of Steels[J].ISIJ International,1998(5):440-446. |
| [14] | Kenneth C. MILLS;Alistair B. FOX .The Role of Mould Fluxes in Continuous Casting―So Simple Yet So Complex[J].ISIJ International,2003(10):1479-1486. |
| [15] | 巴钧涛,文光华,唐萍,赵艳红,迟景灏,职建军,徐国栋.宽厚板包晶钢的保护渣[J].北京科技大学学报,2009(06):696-700. |
| [16] | M. Susa;M. Watanabe;S. Ozawa .Thermal conductivity of CaO-SiO_2-Al_2O_3 glassy slags: Its dependence on molar ratios of Al_2O_3/CaO and SiO_2/Al_2O_3[J].Ironmaking & Steelmaking: Products and applications,2007(2):124-130. |
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