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以Zn-10 wt%Bi的过偏晶合金作为研究对象,在强磁场条件下, 考察了不同电磁体积力对其显微凝固组织与凝固过程的影响.实验结果表明, 在一定的强静磁场下,当交变电流增加到某一特定值时(交变电流频率为50 Hz), 得到的凝固组织最为均匀,第二相颗粒直径也达到最小;在固定交变电流值的条件下 (交变电流频率为50 Hz), Zn-10 wt%Bi合金的凝固组织随着磁感应强度的增加,其偏析程度、 弥散程度和第二相Bi颗粒的大小都有明显的改善.实验分析结果表明,磁场复合交变电流产生的电磁体积力的大小,对合金凝固组织都有显著影响,通过控制磁感应强度和交变电流大小, 从而获得较为理想的过偏晶合金凝固组织.The effects of different electro-magnetic body forces on the microstructure and solidifying process of Zn-10 wt%Bi hyper-monotectic alloy under the condition of high magnetic field are investigated in this paper. The result indicate, on the one hand, that the solidified structure is wanted most and the diameter of the second phase particle is minimum when the alternative current (50 Hz) increases to a certain value. On the other hand, the degree of segregation, dispersion and size of the second Bi phase particles in solidified structure of Zn-10 wt%Bi hyper-monotectic alloy are refined significantly with the increase of magnetic induction intensity under a fixed alternative current (50 Hz) value. The analysis result indicates that both the magnetic induction intensity and alternative current intensity have a significant effect on solidified structure so that we can obtain a more competitive solidified structure of monotectic alloy by controlling the intensity of magnetic induction and alternative current.
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Keywords:
- high magnetic field /
- monotectic alloy /
- segregation /
- electro-magnetic body force
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[2] Song T, Wang T M, Zhao J Z, Xue G X, Li T J 2007 Foundry 56 1025 (in Chinese) [宋涛, 王同敏, 赵九洲, 薛冠霞, 李廷举 2007 铸造 56 1025]
[3] Inoue A,Yano N J 1987 Mater. Sci. 22 123
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[5] Wecker J, Helmolt R V, Schultz L, Samwer K 1993 Appl. Phys. Lett. 52 1985
[6] Uenishi K, Kawaguchi H, Kobayashi K F 1994 J. Mater. Sci. 29 4860
[7] Walter H U 1986 Binary systems with miscibility gap in the liquid state In: Materials Science in Space, edited by Feuerbacher B, Hamacher H, Naumann R J Heidelberg Newyork: Sprinverlag Press pp343-378
[8] Mackay M L 1977 Met. Pro. 111 32
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[12] Lacy L L, Otto G 1974 AIAA/ASME Paper. Boston 74
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[17] Xian A P, Zhang X M, Li Z Y 1996 Acta Mater. 12 345 (in Chinese) [冼爱平, 张修睦, 李忠玉 1996 金属学报 12 345]
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[19] Hideyuki Yasuda, Itsudo Ohnaka, Osamu Kawakani, Kazuyuki Veno, Kohji Kishio 2003 ISTJ International 43 942
[20] Zhang L, Wang E G, Zuo X W, He J C 2008 Acta Mater. 2 165 (in Chinese) [张林, 王恩刚, 左小伟, 赫冀成 2008 金属学报 2 165]
[21] Shi J F, Zhong Y B, Ren Z M, Deng K, Xu K D 2006 Shanghai Metals 28 22 (in Chinese) [史俊芳,钟云波,任忠鸣,邓康,徐匡迪 2006上海金属 28 22]
[22] Vives C 1996 Journal of Crystal Growth 158 118
[23] Miwa K 2001 AIST Today Intl. Ed. 29
[24] Wang J, Zhong Y B, Ren W L, Lei Z S, Ren Z M, Xu K D 2009 Acta Phys. Sin. 58 893 (in Chinese) [王江, 钟云波, 任维丽, 雷作胜, 任忠鸣, 徐匡迪 2009 58 893]
[25] Wang J, Zhong Y B, Wang C, Wang Z Q, Ren Z M, Xu K D 2011 Acta Phys. Sin. 60 076101 (in Chinese) [王江, 钟云波, 汪超, 王志强, 任忠鸣, 徐匡迪 2011 60 076101]
[26] Zhuang L X, Yi X Y, Ma H Y 1991 Fluid dynamics (1st eds.) (Anhui: University of Science and Technology of China) pp163-168 (in Chinese) [庄礼贤, 尹协远, 马晖扬 1991 流体力学(第一版) (安徽: 中国科学技术大学) 第163—168页]
[27] Li C J 2010 Ph.D. Dissertation (Shanghai: Shanghai University) (in Chinese) [李传军 2010 博士学位论文 (上海:上海大学)]
[28] Zener C 1949 J. Appl. Phys. 20 950
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[1] Jia J, Zhao J Z, Guo J J, Liu Y 2002 Immiscible Alloy and Its Processing Method (Harbin: Harbin Institute of Technology Press) pp1-2 (in Chinese) [贾均, 赵九洲, 郭景杰, 刘源 2002 难混溶合金及其制备技术(哈尔滨: 哈尔滨工业大学出版社) 第1—2页]
[2] Song T, Wang T M, Zhao J Z, Xue G X, Li T J 2007 Foundry 56 1025 (in Chinese) [宋涛, 王同敏, 赵九洲, 薛冠霞, 李廷举 2007 铸造 56 1025]
[3] Inoue A,Yano N J 1987 Mater. Sci. 22 123
[4] Otto G H, Ratke L 1974 Proceedings of the Third Space Processing Symposium-Skylab Results Marshall Space Flight Center, Alabama, April 30-May 1, 1974, p1031
[5] Wecker J, Helmolt R V, Schultz L, Samwer K 1993 Appl. Phys. Lett. 52 1985
[6] Uenishi K, Kawaguchi H, Kobayashi K F 1994 J. Mater. Sci. 29 4860
[7] Walter H U 1986 Binary systems with miscibility gap in the liquid state In: Materials Science in Space, edited by Feuerbacher B, Hamacher H, Naumann R J Heidelberg Newyork: Sprinverlag Press pp343-378
[8] Mackay M L 1977 Met. Pro. 111 32
[9] Cahn J W 1979 Metall. Trans. 10A 119
[10] Derby B, Favier J J 1983 Acta Metal. 31 1123
[11] Carlberg T, Fredriksson H 1980 Melellurgical Transaction A 11 10
[12] Lacy L L, Otto G 1974 AIAA/ASME Paper. Boston 74
[13] Obramov P V, Semin S I, Sorkin M Z, Chashechkina D Y 1980 Phys. Chem. Mater. Process 1 47
[14] Pathak J P, Tiwari S N, Malhotra S L 1979 Metals Tech. 11 442
[15] Lee J C 1984 The Formation of Liquid-Liquid Dispersion-Chemical and Engineering Aspects (London: Chameleon Press Ltd.) p1
[16] Ashok S T, Rajan T V1996 Wear 197 105
[17] Xian A P, Zhang X M, Li Z Y 1996 Acta Mater. 12 345 (in Chinese) [冼爱平, 张修睦, 李忠玉 1996 金属学报 12 345]
[18] Duwez P, Willens R H, klement W 1960 J. Appl. Phys. 31 1136
[19] Hideyuki Yasuda, Itsudo Ohnaka, Osamu Kawakani, Kazuyuki Veno, Kohji Kishio 2003 ISTJ International 43 942
[20] Zhang L, Wang E G, Zuo X W, He J C 2008 Acta Mater. 2 165 (in Chinese) [张林, 王恩刚, 左小伟, 赫冀成 2008 金属学报 2 165]
[21] Shi J F, Zhong Y B, Ren Z M, Deng K, Xu K D 2006 Shanghai Metals 28 22 (in Chinese) [史俊芳,钟云波,任忠鸣,邓康,徐匡迪 2006上海金属 28 22]
[22] Vives C 1996 Journal of Crystal Growth 158 118
[23] Miwa K 2001 AIST Today Intl. Ed. 29
[24] Wang J, Zhong Y B, Ren W L, Lei Z S, Ren Z M, Xu K D 2009 Acta Phys. Sin. 58 893 (in Chinese) [王江, 钟云波, 任维丽, 雷作胜, 任忠鸣, 徐匡迪 2009 58 893]
[25] Wang J, Zhong Y B, Wang C, Wang Z Q, Ren Z M, Xu K D 2011 Acta Phys. Sin. 60 076101 (in Chinese) [王江, 钟云波, 汪超, 王志强, 任忠鸣, 徐匡迪 2011 60 076101]
[26] Zhuang L X, Yi X Y, Ma H Y 1991 Fluid dynamics (1st eds.) (Anhui: University of Science and Technology of China) pp163-168 (in Chinese) [庄礼贤, 尹协远, 马晖扬 1991 流体力学(第一版) (安徽: 中国科学技术大学) 第163—168页]
[27] Li C J 2010 Ph.D. Dissertation (Shanghai: Shanghai University) (in Chinese) [李传军 2010 博士学位论文 (上海:上海大学)]
[28] Zener C 1949 J. Appl. Phys. 20 950
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