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采用连续流变挤压成形技术制备了6201铝合金导电线材,研究了热处理制度对连续流变挤压成形制得的6201合金导电材料的微观组织、力学性能和导电性能的影响。结果表明:在T6热处理时随时效温度的升高和时间延长,合金导电性能提高,而伸长率呈下降趋势。经T8和T9形变热处理,β″-Mg2Si针状强化相析出和弥散分布,能有效提高6201铝合金线材的综合力学性能和导电性能。T8处理线材抗拉强度达到326 MPa,伸长率为12.5%,电阻率为30.7 nΩ.m,T9处理线材抗拉强度达到329MPa,伸长率为5.1%,电阻率为31.4 nΩ.m。
The 6201 aluminum alloy conductive wire was prepared by continuous rheological extrusion technology. The effect of heat treatment on the microstructure, mechanical properties and electrical conductivity of 6201 alloy conductive material prepared by continuous rheological extrusion was studied. The results show that with the increase of aging temperature and time, the electrical conductivity of the alloy increases while the elongation decreases. After T8 and T9 thermomechanical treatment, precipitation and dispersion of β "-Mg2Si acicular strengthening phase can effectively improve the mechanical properties and electrical conductivity of 6201 aluminum alloy wire.The tensile strength of T8 treated wire reaches 326 MPa and the elongation is 12.5 %, The resistivity of 30.7 nΩ.m, T9 treatment wire tensile strength reached 329MPa, elongation of 5.1%, the resistivity of 31.4 nΩ.m.