Please wait a minute...
Acta Metall Sin  2006, Vol. 42 Issue (11): 1130-1136     DOI:
Research Articles Current Issue | Archive | Adv Search |
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
Cite this article: 

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 .

Download:  PDF(1228KB) 
Export:  BibTeX | EndNote (RIS)      
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     
ZTFLH:  TN911.73  

URL: 

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
[1] LIU Lujun, LIU Zheng, LIU Renhui, LIU Yong. Grain Boundary Structure and Coercivity Enhancement of Nd90Al10 Alloy Modified NdFeB Permanent Magnets by GBD Process[J]. 金属学报, 2023, 59(11): 1457-1465.
[2] GAO Han, LIU Li, ZHOU Xiaoyu, ZHOU Xinyi, CAI Wenjun, ZHOU Hongling. Preparation and Bioactivity of Micro-Nano Structure on Ti6Al4V Surface[J]. 金属学报, 2023, 59(11): 1466-1474.
[3] ZHANG Lili, JI Zongwei, ZHAO Jiuzhou, HE Jie, JIANG Hongxiang. Key Factors Influencing Eutectic Si Modification in Al-Si Hypoeutectic Alloy by Trace La[J]. 金属学报, 2023, 59(11): 1541-1546.
[4] LI Xiaobing, QIAN Kun, SHU Lei, ZHANG Mengshu, ZHANG Jinhu, CHEN Bo, LIU Kui. Effect of W Content on the Phase Transformation Behavior in Ti-42Al-5Mn- xW Alloy[J]. 金属学报, 2023, 59(10): 1401-1410.
[5] CUI Zhenduo, ZHU Jiamin, JIANG Hui, WU Shuilin, ZHU Shengli. Research Progress of the Surface Modification of Titanium and Titanium Alloys for Biomedical Application[J]. 金属学报, 2022, 58(7): 837-856.
[6] WU Guohua, TONG Xin, JIANG Rui, DING Wenjiang. Grain Refinement of As-Cast Mg-RE Alloys: Research Progress and Future Prospect[J]. 金属学报, 2022, 58(4): 385-399.
[7] LIU Jie, XU Le, SHI Chao, YANG Shaopeng, HE Xiaofei, WANG Maoqiu, SHI Jie. Effect of Rare Earth Ce on Sulfide Characteristics and Microstructure in Non-Quenched and Tempered Steel[J]. 金属学报, 2022, 58(3): 365-374.
[8] DING Ning, WANG Yunfeng, LIU Ke, ZHU Xunming, LI Shubo, DU Wenbo. Microstructure, Texture, and Mechanical Properties of Mg-8Gd-1Er-0.5Zr Alloy by Multi-Directional Forging at High Strain Rate[J]. 金属学报, 2021, 57(8): 1000-1008.
[9] YANG Lipo, ZHANG Hailong, ZHANG Yongshun. Present Analysis and Trend Prediction of Shape/ Performance Collaborative Control for High-End Cold Rolling Foils[J]. 金属学报, 2021, 57(3): 295-308.
[10] LI Xiucheng,SUN Mingyu,ZHAO Jingxiao,WANG Xuelin,SHANG Chengjia. Quantitative Crystallographic Characterization of Boundaries in Ferrite-Bainite/Martensite Dual-Phase Steels[J]. 金属学报, 2020, 56(4): 653-660.
[11] WU Huajian, CHENG Renshan, LI Jingren, XIE Dongsheng, SONG Kai, PAN Hucheng, QIN Gaowu. Effect of Al Content on Microstructure and Mechanical Properties of Mg-Sn-Ca Alloy[J]. 金属学报, 2020, 56(10): 1423-1432.
[12] ZHANG Jun,JIE Ziqi,HUANG Taiwen,YANG Wenchao,LIU Lin,FU Hengzhi. Research and Development of Equiaxed Grain Solidification and Forming Technology for Nickel-Based Cast Superalloys[J]. 金属学报, 2019, 55(9): 1145-1159.
[13] Liping DENG,Kaixuan CUI,Bingshu WANG,Hongliang XIANG,Qiang LI. Microstructure and Texture Evolution of AZ31 Mg Alloy Processed by Multi-Pass Compressing Under Room Temperature[J]. 金属学报, 2019, 55(8): 976-986.
[14] Shubo LI, Wenbo DU, Xudong WANG, Ke LIU, Zhaohui WANG. Effect of Zr Addition on the Grain Refinement Mechanism of Mg-Gd-Er Alloys[J]. 金属学报, 2018, 54(6): 911-917.
[15] Di ZHANG, Mengying YUAN, Zhanqiu TAN, Ding-Bang XIONG, Zhiqiang LI. Progress in Interface Modification and Nanoscale Study of Diamond/Cu Composites[J]. 金属学报, 2018, 54(11): 1586-1596.
No Suggested Reading articles found!