金属学报  2004, Vol. 40 Issue (1): 27-30

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偏晶合金液--液相变过程模拟

赵九洲;胡壮麒

中国科学院金属研究所

Modeling Of The Liquid--Liquid Phase Transformation Of Immiscible Alloys

ZHAO Jiuzhou; HU Zhuangqi

Institute of Metal Research; The Chinese Academy of Sciences

赵九洲; 胡壮麒 . 偏晶合金液--液相变过程模拟[J]. 金属学报, 2004, 40(1): 27-30 .
, . Modeling Of The Liquid--Liquid Phase Transformation Of Immiscible Alloys[J]. Acta Metall Sin, 2004, 40(1): 27-30 .

摘要 参考文献 相关文章 Metrics 全文: PDF(143 KB)   摘要: 建立了能描述在弥散相液滴形核、扩散长大、碰撞凝并及两液相空间分离等因素共同作用下,偏晶合金液--液相变过程中组织演变过程的数学模型. 将计算的温度场和浓度场与控制凝固组织演变的动力学方程相耦合, 模拟研究了单向冷却条件下Al--Pb合金液--液相变过程中的组织演变过程. 结果表明, 随着冷却的进行, 液--液相变区不断由试样底部向试样顶部推进,直至贯穿整个试样. 由于在凝固过程中弥散相液滴进行Marangoni迁移和Stokes运动, 试样中的某些部位会出现液滴贫化、过饱和度增加和多次形核现象. 关键词 ： 偏晶合金,  液--液相变,  微观组织演变     Abstract：A numerical model describing the microstructure evolution under the common action of the nucleation, the diffusional growth, the collisions and coagulations of the minority phase droplets and the spatial separation of the two liquid phases has been developed. The microstructure development in an unidirectionally solidified Al--Pb alloy has been simulated by coupling the calculated temperature and concentration fields with the kinetic equation which controls the microstructure evolution. It is indicated that the liquid--liquid transformation region moves from the bottom to the top of the sample during cooling. The Marangoni migration and the Stokes movement of droplets may cause a decrease of the local number density of droplets and an increase of the local supersaturation. The repeated nucleation of minority phase droplets may, therefore, occur locally. Key words： immiscible alloy    liquid--liquid phase transformation 收稿日期: 2002-12-12      ZTFLH:  TG113.12   服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 赵九洲 胡壮麒 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y2004/V40/I1/27 [1] Davis R, Hassen M J. Fluid Mech, 1988; 196:107 [2] Alkemper J, Ratke L. Z Metallkd, 1994; 85:365 [3] Ratke L, Alkemper J. Adv Colloid Interf Sci, 1995; 58: 151 [4] Zhao J Z, Guo J J, Jia J, Li Q C. Trans Nonferr Met Soc Chin, 1995; 5:85(赵九洲,郭景杰,贾均,李庆春.有色金属学报,1995;5:85) [5] Zhao J Z, Ratke L, Feuerbacher B. Modell Simul Mater Sci Eng, 1998; 6:123 [6] Zhao J Z, Ratke L. Mater Lett, 1999; 38:235 [7] Zhao J Z, Ratke L. Z Metallkd, 1998; 89:241 [8] Zhao J Z, Ratke L. Scr Mater, 1998; 39:181 [9] Zhao J Z, Drees S, Ratke L. Mater Sci Eng, 2000; 282A: 262 [10] Guo J J, LiuY, Jia J, Su Y Q, Ding H S, Zhao J Z, Xue X. Scr Mater, 2001; 45:1197 [11] Guo J J, Liu Y, Jia J, Su Y Q, Ding H S. Acta Metall Sin, 2001; 37:363(郭景杰,刘源,贾均,苏彦庆,丁宏升.金属学报,2001;37:363) [12] Jia J, Zhao J Z, Guo J J, Liu Y. Immiscible Alloys and Their Manufacturing Technique. Harbin: Harbin Institute of Technology Press, 2002:1(贾均,赵九洲,郭景杰,刘源.难混溶合金及其制备技术.哈尔滨:哈尔滨工业大学出版社,2002:1) [13] Zhao J Z, Ratke L, Jia J, Li Q C. J Mater Sci Technol, 2002; 18:197 [14] Zhao J Z. PhD Dissertation, Harbin Institute of Technology, Harbin, 1994(赵九洲.哈尔滨工业大学博士学位论文,1994) [15] Patankar S V. Numerical Heat Transfer and Fluid Flow. New York: McGraw-Hill, 1980:1 [16] Yu Sun-Keun, Sommer F. Z Metallkd, 1996; 87:574 [17] Eustathopoulos N, Chatain D, Vahlas C. Scr Metall, 1984; 18:1 [18] Falk F. In: Ratke L. Immiscible Metals and Organics. Oberursel, Germany: DGM-Informationsgesellschaft, 1993:93 [19] Falk F, Langbein D, Heide W. In: Ratke L ed., Immiscible Metals and Organics. Oberursel, Germany: DGM-Informationsgesellschaft, 1993:111 [20] Ratke L. Diefenbach S. Mater Sci Eng, 1995; R15:263 [21] Prinz B, Romero A. In: Ratke L ed., Immiscible Metals and Organics. Oberursel, Germany: DGM-Informationsgesellschaft, 1993:281! [1] 吴贇, 刘雅辉, 康茂东, 高海燕, 王俊, 孙宝德. K4169合金循环加载过程中的微观组织演变[J]. 金属学报, 2020, 56(9): 1185-1194. [2] 邓聪坤,江鸿翔,赵九洲,何杰,赵雷. Ag-Ni偏晶合金凝固过程研究[J]. 金属学报, 2020, 56(2): 212-220. [3] 赵九洲, 江鸿翔. 偏晶合金凝固过程研究进展[J]. 金属学报, 2018, 54(5): 682-700. [4] 孙倩,江鸿翔,赵九洲. 微量元素Bi对Al-Pb合金凝固过程及显微组织的影响*[J]. 金属学报, 2016, 52(4): 497-504. [5] 陈书, 赵九洲. Sn对Al-Pb偏晶合金凝固过程及组织的影响*[J]. 金属学报, 2014, 50(5): 561-566. [6] 陈书,赵九洲. 偏晶合金在激光表面处理条件下的凝固行为研究[J]. 金属学报, 2013, 49(5): 537-543. [7] 赵雷 赵九洲. Ni-Ag偏晶合金凝固过程研究[J]. 金属学报, 2012, 48(11): 1381-1386. [8] 李海丽 赵九洲. 磁场作用下Al-Pb偏晶合金的凝固过程[J]. 金属学报, 2011, 47(1): 81-87. [9] 李海丽 赵九洲. Al-Pb偏晶合金连续凝固过程模拟[J]. 金属学报, 2010, 46(6): 695-700. [10] 张林 王恩刚 左小伟 赫冀成. 强磁场对Cu--80%Pb过偏晶合金中富Cu颗粒 迁移行为的影响[J]. 金属学报, 2010, 46(4): 423-428. [11] 赵九洲 李海丽 赵雷. 对流和弥散相液滴运动对偏晶合金凝固的影响[J]. 金属学报, 2009, 45(12): 1435-1440. [12] 李海丽; 赵九洲; 李中原; 何杰 . 对流对偏晶合金液--液相变过程的影响[J]. 金属学报, 2008, 44(9): 1081-1084 . [13] 任利娜; 蔡锷; 冯生 . 三元Fe--Sn--Si偏晶合金中的“海藻”生长形貌[J]. 金属学报, 2008, 44(3): 307-313 . [14] 张林; 王恩刚; 左小伟; 赫冀成 . 强磁场对 Cu--80%Pb过偏晶合金凝固组织的影响[J]. 金属学报, 2008, 44(2): 165-171 . [15] 左小伟; 王恩刚; 韩欢; 张林; 赫冀成 . 强磁场下Fe-49%Sn偏晶合金凝固组织及磁性能[J]. 金属学报, 2008, 44(10): 1219-1223 . Viewed Full text Abstract Cited   Shared      Discussed