金属学报  2004, Vol. 40 Issue (7): 683-688

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Al50Si50合金过冷熔体中Si晶体的生长

葛丽丽 刘日平 王 强 王文魁

燕山大学亚稳材料制备技术与科学重点实验室; 秦皇岛 066004

GROWTH OF SILICON IN UNDERCOOLED Al50Si50 ALLOY MELT

GE Lili; LIU Riping; WANG Qiang; WANG Wenkui

GE Lili; LIU Riping; WANG Qiang; WANG Wenkui

葛丽丽; 刘日平; 王强; 王文魁 . Al50Si50合金过冷熔体中Si晶体的生长[J]. 金属学报, 2004, 40(7): 683-688 .
, , , . GROWTH OF SILICON IN UNDERCOOLED Al50Si50 ALLOY MELT[J]. Acta Metall Sin, 2004, 40(7): 683-688 .

摘要 参考文献 相关文章 Metrics 全文: PDF(441 KB)   摘要: 利用电磁悬浮设备, 通过在真空状态下反复加热与冷却处理, 获得了Al50Si50 (原子分数)合金熔体的深过冷, 最大过冷度为320 K. 观察了不同过冷度下凝固样品小球的表面及其截面 深腐蚀后的组织形貌. 过冷度较小时, 初生相Si为板条状枝晶形貌, 并在其中发现了Al的 层状沉积；过冷度较大时, 初生相Si转变为粒状形貌. 共晶体的形貌也随过冷度的增大转变 为离异共晶形态. 较大过冷度下, 微观组织中发现有晶粒细化现象, 这与Si晶体生长受溶质 的抑制及初生相Si枝晶的断裂有关. 关键词 ： 过冷凝固,  Al--Si合金     Abstract：Undercooled solidification of Al50Si50 (atomic fraction) melt is achieved by repeatedly heating and cooling in electromagnetic levitation facility. A maximum undercooling of 320 K is obtained. Phase morphologies on surfaces and deeply etched sections of the samples solidified at different undercoolings are examined. The primary silicon shows faceted dendrites with stratified deposits of aluminum at small undercooling, but shows granular form without deposits of aluminum at large undercooling. The form of the Al--Si eutectic is also found changed into anomalous form at large undercoolings. The microstructural refinement is observed at large undercooling, as a result of solute restriction of crystal growth and fragmentation of the primary silicon dendrites. Key words： solidification of undercooled melt    Al-Si alloy    收稿日期: 2003-07-10      ZTFLH:  TG111   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 葛丽丽 刘日平 王强 王文魁 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y2004/V40/I7/683 [1] Fredriksson H, Hillert M, Lange N. J Inst Met, 1973; 101: 285 [2] Hellawell A. Progress Mater Sci, 1970; 15: 3 [3] Smith R W. Modification of Aluminium-Silicon Alloys inthe Solidification of Metals. London: Iron and Steel Inst,1968: 1 [4] Shamsuzzoha M, Hogan L M. Philos Mag A, 1986; 54:459 [5] Zhang D L, Cantor B. Metal! Trans A, 1993; 24: 1195 [6] Khan S, Elliot R. J Mater Sci, 1994; 29: 736 [7] Sens H, Eustathopoulos N, Camel D, Favier J J. ActaMetall Mater, 1992; 40: 1783 [8] Sundarrajan A, Mortensen A, Kattamis T Z, Flemings MC. Acta Metall Mater, 1998; 46: 91 [9] Magnin P, Mason J T, Trivedi R. Acta Metall Mater, 1991;39: 469 [10] Liang D, Bayraktar Y, Jones H. Acta Metall Mater, 1995;43: 579 [11] Ourdjini A, Elliot R. Mater Sci Technol, 1995; 11: 1241 [12] Bayraktar Y, Liang D, Jones H. J Mater Sci, 1995; 30:5939 [13] Atasoy O A, Yilmaz F, Elliott R. J Cryst Growth, 1984;66: 137 [14] Pierantoni M, Gremaud M, Magnin P, Stoll D, Kurz W.Acta Metall Mater, 1992; 40: 1637 [15] Gremaud M, Allen D R, Perepezko J H. Acta MetallMater, 1996; 44: 2669 [16] Allen D R, Gremaud M, Rappaz M, Perepezko J H. MaterSci Eng A, 1997; 226: 173 [17] Lu S Z, Hellawell A. J Cryst Growth, 1985; 73: 316 [18] Wang R Y, Lu W H, Hogan L M. Metall Mater Trans A,1997; 28: 1233 [19] Apayadin N, Smith R W. Mater Sci Eng A, 1988; 98: 149 [20] Herlach D M, Cochrane R F, Egry I, Fecht H J, Greer AL. Int Mater Rev, 1993; 38: 273 [21] Devaud G, Turnbull D. Appl Phys Lett, 1985; 46: 844 [22] Liu R P, Volkmann T, Herlach D M. Acta Mater, 2001;49: 439 [23] Aoyama T, Takamura Y, Kuribayashi K. Metall MaterTrans A, 1999; 30: 1333 [24] Shao Y, Spaepen F. J Appl Phys, 1996; 79: 2981 [25] Evans P V, Vitta S, Hamerton R G, Greer A L, TurnbullD. Acta Metall Mater, 1990; 38: 233 [26] Lau C F, Kui H W. Acta Metall Mater, 1994; 42: 3811 [27] Trivedi R, Kurz W. Int Metall Rev, 1994; 39: 49 [28] Boettinger W J, Coriell S R, Trivedi R. In: Mehrabian R, Parrish P A eds., Rapid Solidification Processing: Principles and Technologies IV, Claitor's, Baton Rouge, L.A, 1988: 13 [29] Li D, Herlach D M. Phys Rev Lett, 1996;. 77: 1801 [30] Battersby S E, Cochrane R F, Mullis A M. J Mater Sci,1999; 34: 2049 [31] Aoyama T, Kuribayashi K. Acta Mater, 2000; 48: 3739 [32] Macdonald C A, Malvezzi A M, Spaepen F. J Appl Phys,1989; 65: 129 [33] Aziz M J. J Appl Phys, 1982; 53: 1158 [1] 王强 马明臻 张新宇 刘日平 . Zr50Cu50合金过冷熔体中的晶体生长速度[J]. 金属学报, 2008, 44(12): 1415-1418. [2] 陈祥; 耿慧远; 李言祥 . 亚共晶Al--Si合金变质级别的定量金相分析[J]. 金属学报, 2005, 41(8): 891-896 . [3] 罗丰华; 及川胜成; 石田清仁 . Co41Ni32Al27-xSix合金的马氏体相变和磁性转变[J]. 金属学报, 2005, 41(7): 680-684 . [4] 廖恒成; 吴振平; 董光明; 陈洁; 孙国雄 . Sr, B添加对Al--15.5%Si合金中共晶团尺寸的影响[J]. 金属学报, 2005, 41(10): 1047-1052 . [5] 刘相法; 乔进国; 张希华; 刘相俊; 边秀房 . 共晶型 Al--Si合金中（Ca n-x, Na x）Pm化合物的形成与磷变质失效分析[J]. 金属学报, 2004, 40(3): 245-250 . Viewed Full text Abstract Cited   Shared      Discussed