【摘要】 通过20℃电阻率测试、拉伸试验及光学显微镜和扫描电镜观察，研究了Al-1.09Fe-0.174Cu合金导线的组织与性能及其在退火过程中Fe元素的析出行为与基体的回复再结晶。结果表明，拉拔单线中Fe元素除了以分散的富铁相存在外，还以过饱和固溶体的形式存在。在280～380℃退火6 h后Fe固溶量仍有0.030%。在280、320、380℃退火60 min后，Al-Fe-Cu合金的抗拉强度分别为141、134和129 MPa,电阻率分别为28.874、28.590和28.568 nΩ·m。在280～380℃退火过程中，富铁相的析出与基体回复再结晶交织在一起，导线的再结晶组织为晶内分布富铁相的扁长晶粒。更多还原

【Abstract】 Microstructure and properties, the precipitation behavior of Fe and recrystallization of matrix of the Al-1.09Fe-0.174Cu alloy wire during annealing were studied by means of resistivity test at 20 ℃, tensile test, optical microscope and scanning electron microscope. The results show that the Fe element in the drawn wire exists in the form of supersaturated solid solution in addition to dispersed Fe-rich phases. After annealing at 280-380 ℃ for 6 h, the solid solution content of Fe is still 0.030%. After annealing at 280, 320, 380 ℃ for 60 min, the tensile strength of the alloy is 141, 134 and 129 MPa, and the resistivity is 28.874, 28.590 and 28.568 nΩ·m, respectively. During the annealing process at 280-380 ℃, the precipitation of Fe-rich phases is interwoven with the recrystallization of matrix. The recrystallization structure of wire is elongated grains with Fe-rich phases distributed within the grain.更多还原