一、序言合金的时效现象,特别是 Al—Cu 合金的时效,不但在工艺上很重要,而且在科学研究上亦是一个极有价值的问题,件随着合金的时效,引起了合金在物理、化学及力学性质等都有极大的改变。近几十年来,不少学者在这方面进行了大量的工作,因此对时效的微观机构的了解是比较清楚的,本文的目的只是探讨微量杂质 Fe 对 Al—Cu 合金时效的影响,实验结果表明,由于微量杂 First, the preamble The aging of alloys, especially the aging of Al-Cu alloys, not only in the process is very important, but also in the scientific research is also a very valuable issue, with the aging of the alloy, causing the alloy in physics , Chemical and mechanical properties have greatly changed. In recent decades, many scholars have done a lot of work in this area, so the understanding of aging microstructure is relatively clear. The purpose of this paper is only to explore the effect of trace impurities Fe on the aging of Al-Cu alloy. The experimental results show that , Due to trace impurities