Abstract: In this study, 21kinds of alloying elements were chosen and their effects on electrical conductivity of pure aluminum were experimentally stu-died. The influencing factors and mechanisms were comprehensively analyzed. Ordinally, the electrical conductivity of aluminum alloys show a decreasing trend with increasing in the addition content of alloying elements. The elements with little or no solid solubility in α-Al matrix have rela-tively small effect on the electrical conductivity. However, the elements which were solidly soluble in α-Al matrix have a relatively large effect on the conductivity, and the magnitude of the decline is closely related to the elements' type. The effect of solute elements on the resistivity of aluminum alloys was affected by the combined action of the atomic radius differences(Δr) between the solute atoms and the matrix Al atom, the differences in valence, the extra-nuclear electron distribution and the type of solidification reaction. Among them, valence differences and the type of solidification reaction played major controlling roles, followed by the extra-nuclear electron distribution. The transitional elements had characto-ristics, such as large differences in valence and peritectic reaction with Al, as well as many outer electron vacancies, which led to the rapid decrease of conductivity.
刘静, 温澄, 甘俊旗, 罗干, 杜军. 合金元素对纯铝导电性能的影响机制[J]. 材料导报, 2021, 35(24): 24101-24106.
LIU Jing, WEN Cheng, GAN Junqi, LUO Gan, DU Jun. Influencing Mechanisms of Alloying Elements on the Electrical Conductivity of Pure Aluminum. Materials Reports, 2021, 35(24): 24101-24106.
1 Yan K H. Research on the material of high conductivity hard drawn aluminum alloy. Master's Thesis, North China Electric Power University, China, 2016(in Chinese). 严康骅. 高导电率硬铝导体材料研究. 硕士学位论文, 华北电力大学(北京), 2016. 2 Cao H, Sun Q, Pu Q, et al. Vacuum, 2020, 172, 109063. 3 Su C Y, Li D J, Luo A A, et al. Journal of Alloys and Compounds, 2018,747, 431. 4 Horikoshi T. Hitachi Cable, 2020, 25, 31. 5 Tang R Z, Tian R Z. Binary alloy phase diagrams and crystal structure of intermediate phase, Central South University Press, China, 2009(in Chinese). 唐仁政, 田荣璋. 二元合金相图及中间相晶体结构, 中南大学出版社, 2009. 6 Klemens P G, Williams R K J M R. International Metals Reviews, 1986, 31, 197. 7 Wang S R, Ma R, Wang Y Z, et al. Transactions of Nonferrous Metals Society of China, 2012, 22, 1264. 8 Caceres C H, Davidson C J, Griffiths J R, et al. Metallurgical and Materials Transactions A, 1999, 30, 2611. 9 Farahany S, Ourdjini A, Bakhsheshi-Rad H R. Transactions of Nonferrous Metals Society of China, 2016, 26, 28. 10 Lin C, Wu S S, Lu S L, et al. Transactions of Nonferrous Metals Society of China, 2019, 29, 253. 11 Qiu K, Wang R Z, Peng C Q, et al. Transactions of Nonferrous Metals Society of China, 2015, 25, 3546. 12 Lin G Y, Li K, Feng D, et al. Transactions of Nonferrous Metals Society of China, 2019, 29, 1592. 13 Samuel A M, Doty H W, Valtierra S, et al. International Journal of Metal Casting, 2016, 11(3),1. 14 Li Q L, Zhu Y Q, Zhao S, et al. Intermetallics, 2020, 120, 9. 15 Pan H, Pan F, Yang R, et al. Journal of Materials Science, 2014, 49, 3107. 16 Noble B, Pike T J. Journal of Physics F: Metal Physics, 1981, 49, 587. 17 Mujahid M, Engel N N, Chia E H J S M. Scripta Metallurgica, 1979, 13, 887. 18 Schindler A I, Salkovitz E I J P R. Physical Review, 1953, 91, 1320. 19 Klemens P G. Australian Journal of Physics, 1954, 7, 57. 20 Raynor G V. The physical metallurgy of magnesium and its alloys, Pergamon Press, Britain, 1959.
渝公网安备50019002502923号 版权所有：《材料导报》编辑部
2021, Vol. 35 
