Abstract

X-ray diffraction analysis is used to study the mechanochemical formation of a solid solution in the Cu–10 wt % Al system. The formation of the solid solution is shown to occur via the formation of the CuAl₂ and Cu₉Al₄ intermetallic compounds, which, in the course of mechanical activation, react with residual copper to form the Cu(Al), solid solution of aluminum in copper. Under the conditions of mechanical activation in a high-energy planetary ball mill, the two-phase product of the mechanochemical synthesis, namely, 90 wt % Cu(Al) + 10 wt % Cu₉Al₄ forms is formed. It is shown that the maximum reached Al concentration in the solid solution is 7.4 wt %. The microstresses of the solid solution are ~1%; the crystallite size reaches 35–40 nm.

中文翻译：

---

铝在铜中固溶体的机械化学形成

摘要

X 射线衍射分析用于研究固溶体在 Cu–10 wt % Al 体系中的机械化学形成。固溶体的形成是通过形成 CuAl ₂和 Cu ₉ Al ₄金属间化合物而发生的，在机械活化过程中，它们与残留的铜反应形成 Cu(Al)，铝的固溶体在铜。在高能行星球磨机的机械活化条件下，机械化学合成的两相产物，即 90 wt % Cu(Al) + 10 wt % Cu ₉ Al ₄形式形成。结果表明，固溶体中达到的最大铝浓度为 7.4 重量％。固溶体的微应力为~1%；晶粒尺寸达到 35-40 nm。