CAJ | 학술논문

提出一种制备Al?0.70Fe?0.24Cu合金导线的新工艺，该工艺包括水平连续铸造和随后的Conform连续挤压成形，并对合金的力学性能、导电性能和压缩蠕变性能进行研究。结果表明：Conform连续挤压工艺导致明显的晶粒细化、应变诱导Al7Cu2Fe相的析出以及晶体取向分布的改变。采用该工艺加工的Al?0.70Fe?0.24Cu合金导线具有良好的综合力学性能和导电性能；在90°C和76 MPa条件下，该合金与纯铝和退火铜相比具有良好的抗蠕变性能，蠕变初始阶段的应变与时间遵循对数关系。合金性能的提高与在加工过程中形成的细晶和均匀分布的AlFe及Al7Cu2Fe热稳相有关。
제출일충제비Al?0.70Fe?0.24Cu합금도선적신공예，해공예포괄수평련속주조화수후적Conform련속제압성형，병대합금적역학성능、도전성능화압축연변성능진행연구。결과표명：Conform련속제압공예도치명현적정립세화、응변유도Al7Cu2Fe상적석출이급정체취향분포적개변。채용해공예가공적Al?0.70Fe?0.24Cu합금도선구유량호적종합역학성능화도전성능；재90°C화76 MPa조건하，해합금여순려화퇴화동상비구유량호적항연변성능，연변초시계단적응변여시간준순대수관계。합금성능적제고여재가공과정중형성적세정화균균분포적AlFe급Al7Cu2Fe열은상유관。
A novel process for manufacturing Al?0.70Fe?0.24Cu alloy conductor was proposed, which includes horizontal continuous casting and subsequent continuous extrusion forming (Conform). The mechanical properties, electrical conductivity and the compressed creep behaviour of the alloy were studied. The results indicate that the Conform process induces obvious grain refinement, strain-induced precipitation of Al7Cu2Fe phase and the transformation of crystal orientation distribution. The processed alloy has good comprehensive mechanical properties and electrical conductivity. Moreover, a better creep resistance under the conditions of 90 °C and 76 MPa is shown compared with pure Al and annealed copper, and the relationship between primary creep strain and time may comply with the logarithmic law. The enhanced properties are attributed to the grain refinement as well as the fine and homogeneously distributed thermally stable AlFe and Al7Cu2Fe precipitation phases.