铜和稀土元素对铝电工圆杆性能的影响
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摘要
采用光学显微镜(OM)、扫描电子显微镜(SEM)、万能试验机和导电仪测试分析了在8030铝合金中添加不同含量的Cu和稀土对合金组织及性能的影响。结果表明,随着Cu和稀土含量的增加,铝合金抗拉强度有所提高,但导电率随着Cu含量增加先上升后下降,随稀土量的增加略微下降。当加入0.35%Cu-0.3%RE时,合金抗拉强度最高,达210 MPa。当加入0.45%Cu-0.2%RE时,合金导电率最高,达61.6%IACS。
The influence of Cu and rare earth element content on microstructure and properties of aluminum alloy is analyzed by means of optical microscope( OM),scanning electron microscope( SEM),universal testing machine and electric conductivity meter. The results show that the tensile strength of aluminum alloy increases with the increase of Cu and rare earth elements,but the electrical conductivity increases first and then decreases with the increase of Cu content,and decreases slightly with the increase of the amount of rare earth. The tensile strength of the alloy with 0. 35% Cu-0. 3% RE is the highest,which is 210 MPa. When the 0. 45% Cu-0. 2% RE is added,the conductivity of the alloy is the highest,which is 61. 6% IACS.
The influence of Cu and rare earth element content on microstructure and properties of aluminum alloy is analyzed by means of optical microscope( OM),scanning electron microscope( SEM),universal testing machine and electric conductivity meter. The results show that the tensile strength of aluminum alloy increases with the increase of Cu and rare earth elements,but the electrical conductivity increases first and then decreases with the increase of Cu content,and decreases slightly with the increase of the amount of rare earth. The tensile strength of the alloy with 0. 35% Cu-0. 3% RE is the highest,which is 210 MPa. When the 0. 45% Cu-0. 2% RE is added,the conductivity of the alloy is the highest,which is 61. 6% IACS.
引文
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[2]李卫红.电线电缆用Al-Fe-Cu合金组织与性能的研究[D].长沙:中南大学,2012.
[3]巩向鹏,张晓燕,高红选,等.B和Cu对铝电工圆杆组织与性能的影响[J].特种铸造及有色合金,2015(7):774-776.
[4]井佳明,赵建国,贠亚琼.8030铝合金连铸连轧导电铝杆的工艺研究[J].有色金属加工,2016,45(2):25-28.
[5]高红选,张晓燕,黄鑫,等.锆、铜及稀土铈元素对铝电工圆杆组织和性能的影响[J].功能材料,2015,46(3):3073-3076.
[6]段安婧,欧耀辉,秦建军,等.Er对Al-Cu-Mg-Ag合金组织与性能影响的研究进展[J].热加工工艺,2011,40(10):1-4.
[7]ZHANG X Y,ZHANG H K,XIANG X,et al.Microstructure and properties of Al-0.70Fe-0.24Cu alloy conductor prepared by horizontal continuous casting and subsequent continuous extrusion forming[J].Transactions of nonferrous metals society of China,2015(6):1763-1769.
[8]李峰,刘向东,王文印,等.挤压铸造对A356铝合金组织的影响[J].铸造,2008,57(4):347-349.
[9]张俊杰,张晓燕,张忠全,等.铜对稀土铝合金电工圆杆性能的影响[J].有色金属工程,2016,6(2):23-26.
[10]李贞明,左秀荣,倪培相,等.Zr、RE对含Ti 5182铝合金铸态组织及性能的影响[J].特种铸造及有色合金,2008,28(8):645-648.
[11]王韬.Mg及稀土Nd元素对A380.0铝合金组织及性能的影响[D].兰州:兰州理工大学,2010.
[12]方光锦,唐彬彬,金培鹏,等.热挤压对Mg2B2O5/6061Al复合材料组织及性能的影响[J].铸造技术,2013,34(9):1105-1107.