建立数学模型可确定热浸镀锌合金化变化状况，进而可改进其工艺，消除锌层在冲压时的粉化。在建模中是以锌为主扩散元素，还是以铁为主，目前仍不统一。基于热浸镀锌合金化过程中的组织演变规律及相变机理，以锌为主扩散元素，建立了一种合理的数学模型，采用数值解法及C语言编程来模拟合金化镀层组织生长规律；同时应用Visual C＋＋6．0平台开发了GA钢板镀层组织模拟计算软件。以连续镀锌合金化工艺最优参数，将合金化工艺参数输入，计算出ξ，δ和Г相的生长厚度、镀层铁含量及Zn浓度．距离分布，分析η和ξ相消失的合金化时间点，能计算δ相内无浓度梯度的合金化时间点，以便控制Г相的快速生长。根据计算结果和合金化过程分析报告可优化合金化参数，模拟获得最佳镀层显微组织。结果表明：该软件具有较为全面的输入参数、预测结果准确和操作简单等优点，对指导热浸镀锌合金化工艺有重要的实际应用价值。
参考文献
| [1] | A. Chattopadhyay .Effect of process parameters and coating microstructure on powdering behaviour of galvannealed steel sheets[J].Ironmaking & Steelmaking: Products and applications,2009(2):141-144. |
| [2] | 朱久发.汽车用合金化热镀锌板镀层缺陷及其防止措施[J].武钢技术,2009(02):45-48,57. |
| [3] | Jean-Michel Motaigne,袁明生.汽车用合金化热镀锌钢板的最佳镀层微观结构[J].世界钢铁,2001(06):19-23. |
| [4] | 张启富,刘邦津.IF钢合金化镀锌板镀层相结构对其性能影响研究的新进展[J].钢铁,2002(12):65-68,78. |
| [5] | 张理扬,李俊,左良.汽车用合金化热镀锌钢板的发展趋向[J].钢铁钒钛,2004(04):15-19. |
| [6] | Crank J.Free and Moving Boundary Problems[M].Ox- ford:Clarendon Press,1984 |
| [7] | A.K. VERMA;SANJAY CHANDRA;N. BANDYOPADHYAY .Optimization of Galvannealing Parameters through Numerical Modeling of Galvannealing Process[J].Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science,2009(5):1153-1159. |
| [8] | Chakkingal U;Wright R N.[A].Iron and Steel Society,1995:101-108. |
| [9] | Zhang L;Bensinger T R;Fnmke-Polz E M.[A].Centre de Recherches Metallur- giques,1992 |
| [10] | Kubachewski O;Massalski T B.Binary alloy phase dia- grams[M].Ohio:American Society for Metals,1986:1128-1132. |
| [11] | Kanamaru T;Nakayama M .Alloying reaction control in production of galvannealed steel[J].Material Scientific Research International,1995,1(03):150-156. |
| [12] | 苏旭平,李智,尹付成,贺跃辉,潘世文.热浸镀中硅反应性研究[J].金属学报,2008(06):718-722. |
| [13] | Onishi M;Wakamatsu Y;Miura H .Formation and Growth Kinetics of Intermediate Phases in Fe-Zn Diffu- sion Couples[J].The Japan Institute of Metals,1974,15:331-337. |
| [14] | Jordan CE.;Marder AR. .FE-ZN PHASE FORMATION IN INTERSTITIAL-FREE STEELS HOT-DIP GALVANIZED AT 450 DEGREES-C .2. 0.20 WT-PERCENT AL-ZN BATHS[J].Journal of Materials Science,1997(21):5603-5610. |
| [15] | Tsuji S .Numerical modeling of multiphase diffusion in the process of homogenizing in binary alloys[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1994,25A:753-761. |
| [16] | Smith G D.Numerical Solution of Partial Differential Equations:Finite Difference Methods[M].London:Ox- ford University Press,1978:83-165. |
| [17] | Wakamatsu Y;Samura K;Onishi M .Diffusion coeffi- cients in delta1 phase in the Fe-Zn system[J].The Ja- pan Institute of Metals,1977,41:664-669. |
| [18] | Jordan C E;Goggins K M;Marder A R .Interfacial layer development in hot- dip galvanneal coatings on interstitial free(IF)steel[J].Metallurgical and Materials Transac- tions A,1994,25A:2101-2109. |
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