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第3期 耿明山等：钢中残余元素在连铸坯和热轧板中的富集行为 305. 生裂纹 [5]Chen R Y.Yuen W Y D.Copper enrichment behaviour of cop- per containing steels in simulated thin'"slab casting processes.ISIJ 5结论 1t,2005,45(6):807 [6]Kimura Y,Takaki S.Phase transformation mechanism of Fe-Cu (1)对连铸坯氧化层和基体层，以及氧化层/基 alloys.1S1J1mt,1997,37(3):290 体层界面分析，发现连铸坯氧化层和氧化层/基体层 [7]Ohtsuka H.Chosh G.Nagai K.Effects of Cu diffusional trans- 界面处分别存在一定量Cu、As和Sn的富集，但富 formation behavior and microstructure in Fe-Mn Si-C steels.ISI/ 集程度不明显， 1t,1997,37(3):296 (2)热轧板氧化层/基体层界面附近，在钢基体 [8]Ohmori A.Matsuzaki A.Amano K.Effect of Cu.Sn and Sb on 内部存在明显的Cu、As和Sn的富集相，基体层中 Cold forgeability of 0.5%carbon steel.ISIJ Int,1997.37(3): 302 Cu、As和Sn含量明显高于氧化层中Cu、As和Sn [9]Ohtani H.Suda H.Ishida K.Solid/Liquid equilibria in Fe-Cu 含量， based ternary systems.ISIJ Int,1997,37(3):207 (③)连铸坯在加热炉内加热造成铸坯表面选择 [10]Webler B A,SridharS.The effect of silicon on the high temper- 氧化，低熔点富集的残余元素沿着奥氏体晶界向钢 ature oxidation behavior of low carbon steels containing the resid- 基体内渗透扩散，削弱晶界界面能，降低钢材热 ual elements copper and nickel.ISIJ Int,2007.45(9):1245 [11]Suzuki H G.Strain rate dependence of Cu embrittlement in 塑性 steels.1S1J1m,1997,37(3):250 (4)实际生产中采用连铸坯冷送生产工艺，可 [12]Kondo Y.Effect of atmospheric condition on copper behaviour 基本避开Cu、As和Sn的高富集温度区间，明显降 during high temperature oxidation of a steel containing copper 低热轧板表面微裂纹缺陷率. 1J1t,2007,47(9):1309. [13]Basahe VV,Szpunar J A.Growth rate and phase composition of 参考文献 oxide scales during hot rolling of low carbon steel.ISIJ Int, [1]Melford DA.Surface hot shortness in mild steel.J Iron Steel In- 2004,44(9):1554 ,1962(1):290 [14]Kizu T,Nagataki Y,Inazumi T,et al.Intergranular and inter- [2]Imai N.Komatsubara N.Kunishige K.Effect of Cu.Sn and Ni nal oxidation during hot rolling process in ultra-low carbon steel. on hot workability of hot-rolled mild steel.ISIJ Int.1997.37 1S1J1,2002,42(2):206 (3):217 [15]Kim HH.Lim J W.Lee JJ.Oxidation behavior of high-speed [3]Kondo Y.Behabiour of copper during high temperature oxidation steels in dry and wet atmospheres.ISIJ Int.2003.43(12): of steel containing copper.ISIJ Int,2004.44(9):1756. 1983 [4]Matsuoka H.Osawa K.Ono M.Influence of Cu and Sn on hot [16]Kajitani T,Wakoh M,Tokumitsu N,et al.Influence of heating ductility of steels with various C content.ISIJ Int.1997.37 temperature and strain on surface crack in carbon steel induced (3):255 by residual copper.Tetsuto-Hagane,1995,81(3):185生裂纹． 5 结论 （1） 对连铸坯氧化层和基体层以及氧化层／基 体层界面分析发现连铸坯氧化层和氧化层／基体层 界面处分别存在一定量 Cu、As 和 Sn 的富集但富 集程度不明显． （2） 热轧板氧化层／基体层界面附近在钢基体 内部存在明显的 Cu、As 和 Sn 的富集相基体层中 Cu、As 和 Sn 含量明显高于氧化层中 Cu、As 和 Sn 含量． （3） 连铸坯在加热炉内加热造成铸坯表面选择 氧化低熔点富集的残余元素沿着奥氏体晶界向钢 基体内渗透扩散削弱晶界界面能降低钢材热 塑性． （4） 实际生产中采用连铸坯冷送生产工艺可 基本避开 Cu、As 和 Sn 的高富集温度区间明显降 低热轧板表面微裂纹缺陷率． 参 考 文 献 ［1］ Melford D A．Surface hot shortness in mild steel．J Iron Steel Inst1962（1）：290 ［2］ Imai NKomatsubara NKunishige K．Effect of CuSn and Ni on hot workability of hot-rolled mild steel．ISIJ Int199737 （3）：217 ［3］ Kondo Y．Behabiour of copper during high temperature oxidation of steel containing copper．ISIJ Int200444（9）：1756． ［4］ Matsuoka HOsawa KOno M．Influence of Cu and Sn on hot ductility of steels with various C content．ISIJ Int199737 （3）：255 ［5］ Chen R YYuen W Y D．Copper enrichment behaviour of copper-containing steels in simulated thin-slab casting processes．ISIJ Int200545（6）：807 ［6］ Kimura YTakaki S．Phase transformation mechanism of Fe-Cu alloys．ISIJ Int199737（3）：290 ［7］ Ohtsuka HGhosh GNagai K．Effects of Cu diffusional transformation behavior and microstructure in Fe-Mn-S-i C steels．ISIJ Int199737（3）：296 ［8］ Ohmori AMatsuzaki AAmano K．Effect of CuSn and Sb on Cold forgeability of 0∙5％ carbon steel．ISIJ Int199737（3）： 302 ［9］ Ohtani HSuda HIshida K．Solid／Liquid equilibria in Fe-Cu based ternary systems．ISIJ Int199737（3）：207 ［10］ Webler B ASridhar S．The effect of silicon on the high temperature oxidation behavior of low-carbon steels containing the residual elements copper and nickel．ISIJ Int200745（9）：1245 ［11］ Suzuki H G．Strain rate dependence of Cu embrittlement in steels．ISIJ Int199737（3）：250 ［12］ Kondo Y．Effect of atmospheric condition on copper behaviour during high temperature oxidation of a steel containing copper． ISIJ Int200747（9）：1309． ［13］ Basabe V VSzpunar J A．Growth rate and phase composition of oxide scales during hot rolling of low carbon steel．ISIJ Int 200444（9）：1554 ［14］ Kizu TNagataki YInazumi Tet al．Intergranular and internal oxidation during hot-rolling process in ultra-low carbon steel． ISIJ Int200242（2）：206 ［15］ Kim H HLim J WLee J J．Oxidation behavior of high-speed steels in dry and wet atmospheres．ISIJ Int200343（12）： 1983 ［16］ Kajitani TWakoh MTokumitsu Net al．Influence of heating temperature and strain on surface crack in carbon steel induced by residual copper．Tetsu-to-Hagane199581（3）：185 第3期 耿明山等： 钢中残余元素在连铸坯和热轧板中的富集行为 ·305·