In order to develop well-performing aluminium electrical conductors, the role of iron and processing method on electrical and mechanical properties was studied for an AA1370 alloy. Firstly, Ø3 mm cold drawn wires were subjected to a solid solution heat treatment (640 °C/1 h) followed by artificial aging at various temperatures in order to reveal the representative time-temperature-transformation (TTT)-diagram for Fe-rich precipitates. The highest precipitation rate occurred at 450 °C. Secondly, an identical AA1370 alloy was produced by the novel metal continuous screw extruder (MCSE) process into a new Ø3 mm wire. The as produced wire had a recrystallised outer layer and an elongated fibrous structure having a typical 〈0 0 1〉 texture in the center region. TEM investigations revealed Fe-rich precipitates at grain boundaries thus impeding grain growth to some extent. The screw extruded wire processed at 450 °C had a high conductivity (64.2%IACS) while being softer (UTS $~$65 MPa) than the cold drawn wire (UTS $~$164 MPa, 61.9%IACS). The correspondence between strength and electrical conductivity for cold drawn and screw extruded wires was compared to literature data for pure and dilute alloys. The screw extruded wire outperformed other alloys as to electrical conductivity, while being among the materials having lowest strength.

为了开发性能良好的铝电导体，研究了铁和加工方法对AA1370合金的电气和机械性能的作用。首先，对Ø3mm冷拔丝进行固溶热处理（640°C / 1 h），然后在不同温度下进行人工时效，以揭示富铁的典型时温转变（TTT）图。沉淀。最高降水发生在450°C。其次，通过新型金属连续螺杆挤出机（MCSE）工艺将相同的AA1370合金制成新的Ø3毫米金属丝。所生产的金属丝具有重结晶的外层和在中心区域具有典型的“ 0 0 1”织构的细长纤维结构。TEM研究表明，富铁的沉淀物在晶界处，因此在一定程度上阻碍了晶粒的生长。在450°C下加工的螺杆挤出线材具有较高的电导率（64.2％IACS），而较软（UTS）$〜$65 MPa）比冷拉丝（UTS $〜$164 MPa，61.9％IACS）。将冷拔丝和螺杆挤出丝的强度和电导率之间的对应关系与纯合金和稀合金的文献数据进行了比较。螺杆挤出线材在导电性方面优于其他合金，同时是强度最低的材料之一。