Effects of Alloy Composition and Heat Treatment on Electrical Conductivity of Al-Si-Mg Alloy
Hu Zhongchao;Yu Hui;Tianjin Nanuo Machinery Manufacturing Co.,Ltd.;College of Materials Science and Engineering,Liaoning Technical University;
The effects of Si,Mg,Ti elements content on the electrical conductivity of Al-Si-Mg alloy were investigated.The results indicate that with the content of Si increased from 6.0% to 7.5%,the conductivity is decreased from 20.8 MS/m to 19.2 MS/m.When the content of Mg is increased from0.16% to 0.45%,the electric conductivity of the alloy is decreased from 19.3 MS/m to 18.8 MS/m.When the grain refinement element Ti is changed between 0~0.12%,the electric conductivity of the alloy is decreased from 20.5 MS/m to 19.2 MS/m.The experimental research on the heat treatment parameters show that the electrical conductivity and hardness are decreased with the increase of aging temperature and aging time.At 220 ℃for 6 h,the conductivity reaches 23.6 MS/m and the hardness is 76 HB,meeting the requirements of conductors for the alloy properties.
【CateGory Index】： TG146.21