马海涛等：压下对重轨钢大方坯内裂纹敏感性的影响 ·1687 fatigue crack growth of heavy rail steel.Mater Rep,2021,35(12): 2016.68(12):3107 12136 [15]Li G S,Yu W,Cai Q W.Investigation of reduction pretreatment (岑耀东，陈林，董瑞，等.自回火对重轨钢疲劳裂纹扩展行为的 process for continuous casting.J Mater Process Technol,2016, 影响.材料导报，2021,35(12)：12136) 227:41 [2]Li HG,JiC,JiangDB,et al.Formation mechanism and control of [16]Ji C,Luo S,Zhu M Y.Analysis and application of soft reduction semi-micro-segregation in rail steel bloom.Iron Steel,2021. amount for bloom continuous casting process.IS In,2014. 56(6):59 54(3):504 (李红光，祭程，姜东滨，等.重载钢轨钢连铸大方坯半宏观偏析 [17]Yu C H,Suzuki M,Shibata H,et al.Simulation of crack formation 形成机制与控制.钢铁，2021,56(6)：59) on solidifying steel shell in continuous casting mold.IS//Int, [3]Wang Y D.Zhang L F,Zhang H J,et al.Simulation of the 1996,36(Suppl):S159 macrosegregation in the gear steel billet continuous casting [18]Won Y M,Kim K H,Yeo T J,et al.Effect of cooling rate on ZST, process.Chin J Eng,2021,43(4):561 LIT and ZDT of carbon steels near melting point./SL/Int,1998, (王亚栋，张立峰，张海杰，等.小方坯齿轮钢连铸过程中的宏观 38(10):1093 偏析模拟.工程科学学报，2021,43(4)：561) [19]Seol D J,Won Y M,Oh K H,et al.Mechanical behavior of carbon [4]Sun H,Li L,Cheng X,et al.Reduction in macrosegregation on steels in the temperature range of mushy zone./SI/Int,2000. 380 mmx 490 mm bloom caster equipped combination M+F-EMS 40(4):356 by optimising casting speed.Ironmaking Steelmaking,2015, [20]Cornelissen M C M.Mathematical model for soldification of 42(6):439 multicomponent alloys.Ironmaking Steelmaking,1986,13(4): [5]Ayata K,Mori H,Taniguchi K,et al.Low superheat teeming with 204 electromagnetic stirring./SI/Int,1995,35(6):680 [21]Yamanaka A,Nakajima K,Okamura K.Critical strain for internal [6]Sun H,Li L.Application of swirling flow nozzle and investigation crack formation in continuous casting.Ironmaking Steelmaking, of superheat dissipation casting for bloom continuous casing 1995,22(6):508 Ironmaking Steelmaking,2016,43(3):228 [22]Kobayashi S.Relationships of fraction solid with zero ductility and [7]Liu H P,Xu M G,Qiu S T,et al.Numerical simulation of fluid zero strength temperatures during solidification.Testu-to-Hagane, flow in a round bloom mold with in-mold rotary electromagnetic 1987,73:S896 stirring.Metall Mater Trans B,2012,43(6):1657 [23]Nakagawa T,Umeda T,Murata J,et al.Deformation behavior [8]Ren B Z,Chen D F,Wang H D,et al.Numerical simulation of during solidification of steels.ISI/Int,1995,35(6):723 fluid flow and solidification in bloom continuous casting mould [24]Kim K.Han H N,Yeo T.et al.Analysis of surface and internal with electromagnetic stirring.Ironmaking Steelmaking,2015. cracks in continuously cast beam blank.Ironmaking Steelmaking, 42(6):401 1997.24(3):249 [9] Wang S Q,de Toledo G A,Valimaa K,et al.Magnetohy- [25]Wang Y C,Hu P.Research on formation of internal cracks by soft drodynamic phenomena,fluid control and computational modeling reduction in billet continuous casting.Steelmaking,2015,31(2): in the continuous casting of billet and bloom./S//Int,2014, 54(10):2273 (王一成，胡鹏.连铸方坯轻压下内裂纹形成研究.炼钢，2015， [10]Li S X,Wang P,Lan P,et al.Melt flow and heat transfer at the 31(2):49) crater end of round billet continuous casting using final [26]Song X.Coupled Thermo-Mechanical Model for Soft Reduction electromagnetic stirring.Chin J Eng,2019,41(6):748 for Continuous Casting Bloom [Dissertation].Wuhan:Wuhan (李少翔，王璞，兰鹏，等.圆坯凝固末端电磁搅拌作用下的流动 University of Science and Technology,2018 与传热行为.工程科学学报，2019,41(6)：748) (宋潇.大方坯连铸轻压下过程热力耦合数值模拟研究学位论 [11]Domitner J,Wu M H,Kharicha A,et al.Modeling the effects of 文].武汉：武汉科技大学，2018) strand surface bulging and mechanical softreduction on the [27]Li X B,Ding H.Tang Z Y,et al.Formation of internal cracks macrosegregation formation in steel continuous casting.Metall during soft reduction in rectangular bloom continuous casting.In Mater TransA,2014,45(3):1415 J Miner Metall Mater,2012,19(1):21 [12]Ludlow V,Normanton A,Anderson A,et al.Strategy to minimise [28]Dong Q P,Zhang J M,Wang B,et al.Shrinkage porosity and its central segregation in high carbon steel grades during billet alleviation by heavy reduction in continuously cast strand./Mater casting.Ironmaking Steelmaking,2005,32(1):68 Process Technol,2016,238:81 [13]Zhao JP.Liu L Wang WW,et al.Effects of heavy reduction [29]Zhao JP,Liu L.Fan J W,et al.Study and application of soft technology on internal quality of continuous casting bloom reduction technology in continuous casting.Mater Rev,2016, Ironmaking Steelmaking,2019,46(3):227 30(15):57 [14]Ji C,Wu C H,Zhu M Y.Thermo-mechanical behavior of the (赵军普，刘浏，范建文，等.轻压下技术及其在连铸中的研究与 continuous casting bloom in the heavy reduction process.JOM, 应用.材料导报，2016,30(15)：57)fatigue crack growth of heavy rail steel. Mater Rep, 2021, 35（12）: 12136 （岑耀东, 陈林, 董瑞, 等. 自回火对重轨钢疲劳裂纹扩展行为的 影响. 材料导报, 2021, 35（12）：12136） Li H G, Ji C, Jiang D B, et al. Formation mechanism and control of semi-micro-segregation in rail steel bloom. Iron Steel, 2021, 56（6）: 59 （李红光, 祭程, 姜东滨, 等. 重载钢轨钢连铸大方坯半宏观偏析 形成机制与控制. 钢铁, 2021, 56（6）：59） [2] Wang Y D, Zhang L F, Zhang H J, et al. Simulation of the macrosegregation in the gear steel billet continuous casting process. Chin J Eng, 2021, 43（4）: 561 （王亚栋, 张立峰, 张海杰, 等. 小方坯齿轮钢连铸过程中的宏观 偏析模拟. 工程科学学报, 2021, 43（4）：561） [3] Sun H, Li L, Cheng X, et al. Reduction in macrosegregation on 380 mm× 490 mm bloom caster equipped combination M+ F-EMS by optimising casting speed. Ironmaking Steelmaking, 2015, 42（6）: 439 [4] Ayata K, Mori H, Taniguchi K, et al. Low superheat teeming with electromagnetic stirring. ISIJ Int, 1995, 35（6）: 680 [5] Sun H, Li L. Application of swirling flow nozzle and investigation of superheat dissipation casting for bloom continuous casing. Ironmaking Steelmaking, 2016, 43（3）: 228 [6] Liu H P, Xu M G, Qiu S T, et al. Numerical simulation of fluid flow in a round bloom mold with in-mold rotary electromagnetic stirring. Metall Mater Trans B, 2012, 43（6）: 1657 [7] Ren B Z, Chen D F, Wang H D, et al. Numerical simulation of fluid flow and solidification in bloom continuous casting mould with electromagnetic stirring. Ironmaking Steelmaking, 2015, 42（6）: 401 [8] Wang S Q, de Toledo G A, Välimaa K, et al. Magnetohy￾drodynamic phenomena, fluid control and computational modeling in the continuous casting of billet and bloom. ISIJ Int, 2014, 54（10）: 2273 [9] Li S X, Wang P, Lan P, et al. Melt flow and heat transfer at the crater end of round billet continuous casting using final electromagnetic stirring. Chin J Eng, 2019, 41（6）: 748 （李少翔, 王璞, 兰鹏, 等. 圆坯凝固末端电磁搅拌作用下的流动 与传热行为. 工程科学学报, 2019, 41（6）：748） [10] Domitner J, Wu M H, Kharicha A, et al. Modeling the effects of strand surface bulging and mechanical softreduction on the macrosegregation formation in steel continuous casting. Metall Mater Trans A, 2014, 45（3）: 1415 [11] Ludlow V, Normanton A, Anderson A, et al. Strategy to minimise central segregation in high carbon steel grades during billet casting. Ironmaking Steelmaking, 2005, 32（1）: 68 [12] Zhao J P, Liu L, Wang W W, et al. Effects of heavy reduction technology on internal quality of continuous casting bloom. Ironmaking Steelmaking, 2019, 46（3）: 227 [13] Ji C, Wu C H, Zhu M Y. Thermo-mechanical behavior of the continuous casting bloom in the heavy reduction process. JOM, [14] 2016, 68（12）: 3107 Li G S, Yu W, Cai Q W. Investigation of reduction pretreatment process for continuous casting. J Mater Process Technol, 2016, 227: 41 [15] Ji C, Luo S, Zhu M Y. Analysis and application of soft reduction amount for bloom continuous casting process. ISIJ Int, 2014, 54（3）: 504 [16] Yu C H, Suzuki M, Shibata H, et al. Simulation of crack formation on solidifying steel shell in continuous casting mold. ISIJ Int, 1996, 36（Suppl）: S159 [17] Won Y M, Kim K H, Yeo T J, et al. Effect of cooling rate on ZST, LIT and ZDT of carbon steels near melting point. ISIJ Int, 1998, 38（10）: 1093 [18] Seol D J, Won Y M, Oh K H, et al. Mechanical behavior of carbon steels in the temperature range of mushy zone. ISIJ Int, 2000, 40（4）: 356 [19] Cornelissen M C M. Mathematical model for soldification of multicomponent alloys. Ironmaking Steelmaking, 1986, 13（4）: 204 [20] Yamanaka A, Nakajima K, Okamura K. Critical strain for internal crack formation in continuous casting. Ironmaking Steelmaking, 1995, 22（6）: 508 [21] Kobayashi S. Relationships of fraction solid with zero ductility and zero strength temperatures during solidification. Testu-to-Hagane, 1987, 73: S896 [22] Nakagawa T, Umeda T, Murata J, et al. Deformation behavior during solidification of steels. ISIJ Int, 1995, 35（6）: 723 [23] Kim K, Han H N, Yeo T, et al. Analysis of surface and internal cracks in continuously cast beam blank. Ironmaking Steelmaking, 1997, 24（3）: 249 [24] Wang Y C, Hu P. Research on formation of internal cracks by soft reduction in billet continuous casting. Steelmaking, 2015, 31（2）: 49 （王一成, 胡鹏. 连铸方坯轻压下内裂纹形成研究. 炼钢, 2015, 31（2）：49） [25] Song X. Coupled Thermo-Mechanical Model for Soft Reduction for Continuous Casting Bloom [Dissertation]. Wuhan: Wuhan University of Science and Technology, 2018 （ 宋潇. 大方坯连铸轻压下过程热力耦合数值模拟研究[学位论 文]. 武汉: 武汉科技大学, 2018） [26] Li X B, Ding H, Tang Z Y, et al. Formation of internal cracks during soft reduction in rectangular bloom continuous casting. Int J Miner Metall Mater, 2012, 19（1）: 21 [27] Dong Q P, Zhang J M, Wang B, et al. Shrinkage porosity and its alleviation by heavy reduction in continuously cast strand. J Mater Process Technol, 2016, 238: 81 [28] Zhao J P, Liu L, Fan J W, et al. Study and application of soft reduction technology in continuous casting. Mater Rev, 2016, 30（15）: 57 （赵军普, 刘浏, 范建文, 等. 轻压下技术及其在连铸中的研究与 应用. 材料导报, 2016, 30（15）：57） [29] 马海涛等： 压下对重轨钢大方坯内裂纹敏感性的影响 · 1687 ·