Combined Treatment of Sr and B and Evaluation of Refinment--Modification

Acta Metall Sin

2006, Vol. 42

Issue (11): 1130-1136 DOI:

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Combined Treatment of Sr and B and Evaluation of Refinment--Modification

CHEN Xiang; GENG Huiyuan; LI Yanxiang

Key Laboratory for Advanced Materials Processing Technology; Ministry of Education; Department of Mechanical Engineering; Tsinghua University; Beijing 100084

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CHEN Xiang; GENG Huiyuan; LI Yanxiang. Combined Treatment of Sr and B and Evaluation of Refinment--Modification. Acta Metall Sin, 2006, 42(11): 1130-1136 .

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Abstract The effects of boron and strontium on the solidified structures of hypoeutectic Al-Si alloys by combination addition of boron and strontium have been studied by quantitative metallography and chemical analysis. The results show that the presence of strontium has no remarkable effects on the efficiency of grain refinement of Al-7Si alloys. But the presence of boron reduces the effective strontium level in the melt Al-7Si alloys and thus decreases the modification level of Al-7Si alloys. Based on these, the relationship between the shape of solidification segment of the cooling curve and the features of melt hypoeutectic Al-Si alloys has been studied by computer-aided cooling curve analysis and pattern cooling curve recognition approaches. It is indicated that both the grain size difference and the modification level difference converge to zero when the comprehensive parameter Ω, which expresses the difference between cooling curves, approaches to zero. The shape of the solidification segment of a cooling curve can token the features of the Al-7Si alloy melt by combination addition of boron and strontium. Based on a database established from a large amount of experimental results, the on-line prediction of eutectic modification level of Al-7Si alloy melt has been realized.

Key words: aluminum-silicon alloys grain refinement modification cooling curve recognition

Received: 14 March 2006

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TN911.73

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y2006/V42/I11/1130

[1] Croseley E, Mondolfo L F. AFS Trans, 1966; 74: 53
[2] Argyropoulos S, Closset B, Oger H. AFS Trans, 1983; 27: 351
[3] Paray F, Gruzleski J E. AFS Trans, 1994; 115: 833
[4] Apelian D, Sigworth G K, Wharler K R. AFS Trans, 1984; 92: 297
[5] Kori S A, Murty B S, Chakraborty M. Mater Sci Eng, 2000; A283: 94
[6] Kurfman V B. AFS Trans, 1961; 69: 234
[7] Charbonnier J. Hommes Foerie, 1975; 59: 29
[8] Ananthanarayanan L, Samuel F H, Gruzleski J E. AFS Trans, 1992; 113: 383
[9] Easton M, Stjohn D. Metall Mater Trans, 1999; 30A: 1613
[10] Charbonnier J. AFS Trans, 1984; 92: 907
[11] Bekaert F, Ghent E W. Aluminum, 1996; 72: 442
[12] Gong L Q. Spec Cast Nonferrous Alloys, 1996; 1: 16 (龚磊清．特种铸造及有色合金,1996;(1):16)
[13] Tenekedjiev N and Gruzleski J E. AFS Trans, 1991; 35: 1
[14] Li Y X, Wang Q, Xu X R. Mater Rev, 2002; 16: 1 (李言祥,王强,徐雪蓉．材料导报, 2002;16:1)
[15] Li Y X, Hu X, Xu X R. J Mater Sci Technol, 2001; 17: 73
[16] Li Y X, Xu X R, Wang Q, Liu B C. Int J Cast Met Res, 2003; 16: 41
[17] Wang Q, Li Y X, Li X C. Metall Mater Trans, 2003; 34A: 1175
[18] Li Y X, Geng H Y. Spec Cats Nonferrous Alloys, 2004; (6): 4 (李言祥,耿慧远．特种铸造及有色合金, 2004;(6):4)
[19] Geng H Y, Li Y X, Chen X, Wang X. Scr Mater, 2005; 53: 69
[20] Chen X, Geng H Y, Li Y X. Acta Metall Sin, 2005; 41: 891 (陈祥,耿慧远,李言祥．金属学报, 2005;41:891)
[21] Nogita K, McDonald S D, Dahle A K. Mater Trans, 2003; 44: 692
[22] Sigworth G K, Guzowski M M. AFS Trans, 1985; 93: 907
[23] Geng H Y. PhD Dissertation, Tsinghua University, Beijing, 2005 (耿慧远．清华大学博士学位论文,北京, 2005)
[24] Liao H C, Sun G X. Scr Mater, 2003; 48: 1035
[25] Li J G, Zhang B Q, Wang L, Yang W Y, Ma H T. Mater Sci Eng, 2002; A328: 169

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