Acta Metall Sin  1993, Vol. 29 Issue (3): 11-18    DOI:

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SCALING LAW OF IRREGULAR EUTECTIC IN DIRECTIONAL SOLIDIFICATION

LIU Junming;LIU Zhiguo;WU Zhuangchun Nanjing University Lecturer;National Laboratory of Solid State Microstructures;Nanjing University; Nanjing 210008

LIU Junming;LIU Zhiguo;WU Zhuangchun Nanjing University Lecturer;National Laboratory of Solid State Microstructures;Nanjing University; Nanjing 210008. SCALING LAW OF IRREGULAR EUTECTIC IN DIRECTIONAL SOLIDIFICATION. Acta Metall Sin, 1993, 29(3): 11-18.

Abstract References Related Articles Recommended Metrics Download:  PDF(947KB)  Export:  BibTeX | EndNote (RIS)       Abstract  The profile features of solidifying interface of irregular Al-Si eutectic duringdirectional solidification were studied by solving a nonlinear coupling equation of directionalsolidification of Ai-Si eutectic. The critical splitting point of the solidifying interface coin- cides with the maximum value of its position and corresponds to the marginal stability point.Argument is presented that the interlamellar spacing for local regular structure selects the crit-ical splitting state of α(Al)-liquid interface as its operating point, and the operating point ofaverage interflake spacing for irregular structure is the critical splitting state of β(Si)-liquidinterface. The scaling laws derived, which have more general forms than the classicJackson-Hunt scaling, gained support from the experimental results. Key words:  irregular Al-Si eutectic      directional solidification      scaling law      Received:  18 March 1993      Service E-mail this article Add to citation manager E-mail Alert RSS （） Articles by authors URL:  https://www.ams.org.cn/EN/     OR     https://www.ams.org.cn/EN/Y1993/V29/I3/11 1 Sprenger H J, Potschke J, Potard C, Rogge V. In: Walter H U eds., Fluid Science and Materials Science in Space, Berlin: Springer-Verlag, 1987: 569 2 Elliott R. Eutectic Solidification Processing, Crystalline and Glassy Alloys, London: Butterworths, 1983 3 Muller-Krumbhaar H, Kurz W. In: Cahn R W, Hassen P, Kramer E J. eds., Materials Science and Technology: A Comprehensive Treatment, Vol .V, New York: VCH Publishers Inc., 1991: 554 4 Liu J M, Zhou Y H, Shang B L. J Mater Sci, 1992; 27: 2067 5 Jackson K A, Kunt J D. Trans AIME, 1966; 236: 1129 6 Langer J S. Phys Rev Lett, 1980; 44: 1023 7 Liu J M, Zhou Y H, Shang B L. Acta Metall, 1990; 38: 1625 8 Kurz W, Fisher D J. Fundamentals of Solidification, Aedermannsdorf: Trans Tech, 1984: 220 9 Gundez M, Hunt J D. Acta Met, 1985; 33: 1651 10 Liu J M, Zhou Y H, Shang B L. Acta Met, 1990; 38: 1651 11 Langer J S. Rev Mod Phys, 1980; 52: 1 12 Hohenberger P C, Langer J S. J Soli Stat Phys 1982; 28: 193 13 Hogen L M, Song H. Metall Trans, 1987: 18A: 707 14 Kassner K, Misbah C. Phys Rev Lett, 1991; 66: 445i [1] MA Dexin, ZHAO Yunxing, XU Weitai, WANG Fu. Effect of Gravity on Directionally Solidified Structure of Superalloys[J]. 金属学报, 2023, 59(9): 1279-1290. [2] ZHANG Jian, WANG Li, XIE Guang, WANG Dong, SHEN Jian, LU Yuzhang, HUANG Yaqi, LI Yawei. Recent Progress in Research and Development of Nickel-Based Single Crystal Superalloys[J]. 金属学报, 2023, 59(9): 1109-1124. [3] SU Zhenqi, ZHANG Congjiang, YUAN Xiaotan, HU Xingjin, LU Keke, REN Weili, DING Biao, ZHENG Tianxiang, SHEN Zhe, ZHONG Yunbo, WANG Hui, WANG Qiuliang. 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