高电导率高强度铝合金制备方式研究

Preparation of High Conductivity and High Strength Aluminum Alloy

设计了Al-Mg-Si-Cu系合金,主成分w(Mg)/w(Si)≈1.1、Cu含量控制在0.05%~0.10%之间。采用连铸连轧工艺方式,生产φ9.5mm的铝合金杆,然后进行自然时效处理,以其作为加工单丝的原材料,探索提高单丝电导率的方式。结果表明,铝合金杆先经过200℃×6h时效处理后拉拔制成φ2.92mm单丝,可以获得更高的电导率(批量试制试样平均电导率≥32.3 MS/m),同时满足抗拉强度≥325MPa的要求。

Al-Mg-Si-Cu alloy composition was designed,where the main component of w(Mg)/w(Si)is approximately 1.1,and Cu content is controlled within 0.05%~0.10%.The continuous casting and rolling was adopted to produce the aluminum alloy rod with φ9.5 mm,which was used as a raw material for processing monofilament to improve the conductivity of monofilaments after naturally aging to T4 state.The results show that the aluminum alloy rod can be drawn to produce φ2.92 mm monofilament by 200 ℃×6 haging treatment,which possesses a higher conductivity(conductivity of batch trial production sample ≥32.3 MS/m).Meanwhile,the tensile strength of the monofilament meets the requirement(≥325 MPa).