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Eutectic solidification is very important in the development of new materials in which the periodic multiphase structures may have a remarkable or enhanced functionality. The morphology evolution during eutectic solidification is investigated experimentally using slab-geometry slides of succinonitrile-(D)camphor (SCN-DC) transparent organic eutectic material. By specifically focusing on the effect of pulling velocity on microstructure in directional growth, the temperature gradient and the thickness are kept the same in all the experiments. It is found that eutectic seeds first occur in the grain boundary channel or the specimen side-wall groove. And the growth of eutectic seeds is both parallel to the direction of temperature gradient and along the liquid/solid interface at the same time. At a low pulling velocity (0.064–0.44 μm/s), the macroscopic growth morphology is flat, and the inner microstructure is rod-shaped, which is parallel to the growth direction. It is obvious that the eutectic spacing becomes smaller with the increase of pulling velocity. At a high pulling velocity (0.67–1.56 μm/s), the macroscopic growth morphology becomes cellular. However, the inner microstructure is still rod-shaped, but its distribution is radially outward. And the eutectic spacing decreases as pulling velocity increases.
[1] Agular M R, Caram R 1996 Journal of Crystal Growth 166 398
[2] Cadirli E, Kaya H, Gunduz M 2007 Journal of Alloys and Compound 431 171
[3] Ginibre M, Akamatsu S, Faivre G 1997 Phys. Rev. 56 780
[4] Datye V, Langer J S 1981 Phys. Rev. 24 4155
[5] Meng Guanghui, Lin X, Du L C, Huang W D 2007 Acta Metall. Sin. 43 459 (in Chinese) [孟广慧, 林鑫, 杜立成, 黄卫东 2007 金属学报 43 459]
[6] Li J F, Zhou Y H 2005 Science in China Ser. E 35 449 (in Chinese) [李金富, 周尧和 2005 中国科学E辑 35 449]
[7] Seetharaman V, Eshelman, Trivedi R 1988 Acta Metall. 36 1175
[8] Jackson K A, Hunt J D 1966 Transaction of the Metallurgical Society of AIME 236 1129
[9] Trivedi R, Magnin P, Kurz W 1987 Acta Metall. 35 971
[10] Kurz W, Trivedi R 1991 Metallurgical Transactions A 22 3051
[11] Li J F, Zhou Y H 2005 Acta Materialia 53 2351
[12] Liu J M, Liu Zh G, W Zh C 1993 Chin. Phys. Lett. 10 253
[13] Yao X D, H T, Zhou Y H, Hu Z Q 1997 Progress in Nature Science 7 24 (in Chinese) [姚向东, 黄韬, 周尧和, 胡壮麒 1997 自然科学进展 7 24]
[14] Akamatsu S, Bottin-Rousseau S, Perrut M, Faivre G, Witusiewicz V T, Sturz L 2007 Journal of Crystal Growth 299 418
[15] ]Serefoglu M, Napolitano R E 2011 Acta Materialia 59 1048
[16] Teng J, Liu S, Trivedi R 2008 Acta Materialia 56 2819
[17] Zhu Y C, Wang J C, Yang G C, Zhao D W 2007 Chin. Phys. 16 805
[18] Wu M W, Xiong S M 2011 Acta Phys. Sin. 60 058103 (in Chinese) [吴孟武, 熊守美 2011 物理学报 60 058103]
[19] Yang Y J, Wang J C, Zhang Y X, Zhu Y C, Yang G C 2009 Acta Phys. Sin. 58 2797 (in Chinese) [杨玉娟, 王锦程, 张玉祥, 朱耀产, 杨根仓 2009 物理学报 58 2797]
[20] Zhu Y C, Wang J C, Yang G C, Yang Y J 2007 Acta Phys. Sin. 56 5542 (in Chinese) [朱耀产, 王锦程, 杨根仓, 杨玉娟 2007 物理学报 56 5542]
[21] Melis Serefoglu, R E Napolitano 2008 Acta Materialia 56 3862
[22] Meng G H 2008 Ph.D. Dissertation (Xi’an: Northwestern Polytechnical University) (in Chinese) [孟广慧 2008 西北工业大学博士论文 (西安: 西北工业大学)]
[23] Zhao S, L J F, Liu L, Zhou Y H 2008 Acta Metall. Sin. 44 1335 (in Chinese) [赵素, 李金富, 刘礼, 周尧和 2008 金属学报 44 1335]
[24] Liu J M 1992 Acta Phys. Sin. 41 861(in Chinese) [刘俊明 1992 物理学报 41 861]
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[1] Agular M R, Caram R 1996 Journal of Crystal Growth 166 398
[2] Cadirli E, Kaya H, Gunduz M 2007 Journal of Alloys and Compound 431 171
[3] Ginibre M, Akamatsu S, Faivre G 1997 Phys. Rev. 56 780
[4] Datye V, Langer J S 1981 Phys. Rev. 24 4155
[5] Meng Guanghui, Lin X, Du L C, Huang W D 2007 Acta Metall. Sin. 43 459 (in Chinese) [孟广慧, 林鑫, 杜立成, 黄卫东 2007 金属学报 43 459]
[6] Li J F, Zhou Y H 2005 Science in China Ser. E 35 449 (in Chinese) [李金富, 周尧和 2005 中国科学E辑 35 449]
[7] Seetharaman V, Eshelman, Trivedi R 1988 Acta Metall. 36 1175
[8] Jackson K A, Hunt J D 1966 Transaction of the Metallurgical Society of AIME 236 1129
[9] Trivedi R, Magnin P, Kurz W 1987 Acta Metall. 35 971
[10] Kurz W, Trivedi R 1991 Metallurgical Transactions A 22 3051
[11] Li J F, Zhou Y H 2005 Acta Materialia 53 2351
[12] Liu J M, Liu Zh G, W Zh C 1993 Chin. Phys. Lett. 10 253
[13] Yao X D, H T, Zhou Y H, Hu Z Q 1997 Progress in Nature Science 7 24 (in Chinese) [姚向东, 黄韬, 周尧和, 胡壮麒 1997 自然科学进展 7 24]
[14] Akamatsu S, Bottin-Rousseau S, Perrut M, Faivre G, Witusiewicz V T, Sturz L 2007 Journal of Crystal Growth 299 418
[15] ]Serefoglu M, Napolitano R E 2011 Acta Materialia 59 1048
[16] Teng J, Liu S, Trivedi R 2008 Acta Materialia 56 2819
[17] Zhu Y C, Wang J C, Yang G C, Zhao D W 2007 Chin. Phys. 16 805
[18] Wu M W, Xiong S M 2011 Acta Phys. Sin. 60 058103 (in Chinese) [吴孟武, 熊守美 2011 物理学报 60 058103]
[19] Yang Y J, Wang J C, Zhang Y X, Zhu Y C, Yang G C 2009 Acta Phys. Sin. 58 2797 (in Chinese) [杨玉娟, 王锦程, 张玉祥, 朱耀产, 杨根仓 2009 物理学报 58 2797]
[20] Zhu Y C, Wang J C, Yang G C, Yang Y J 2007 Acta Phys. Sin. 56 5542 (in Chinese) [朱耀产, 王锦程, 杨根仓, 杨玉娟 2007 物理学报 56 5542]
[21] Melis Serefoglu, R E Napolitano 2008 Acta Materialia 56 3862
[22] Meng G H 2008 Ph.D. Dissertation (Xi’an: Northwestern Polytechnical University) (in Chinese) [孟广慧 2008 西北工业大学博士论文 (西安: 西北工业大学)]
[23] Zhao S, L J F, Liu L, Zhou Y H 2008 Acta Metall. Sin. 44 1335 (in Chinese) [赵素, 李金富, 刘礼, 周尧和 2008 金属学报 44 1335]
[24] Liu J M 1992 Acta Phys. Sin. 41 861(in Chinese) [刘俊明 1992 物理学报 41 861]
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