In this study, the Al-15 wt % Fe powders were prepared using two methods: (1) milling of the initial alloy in a ball or a planetary mill; (2) centrifugal atomization. The effect of milling time and distribution of temperature field during atomization on the morphology and microstructure of the Al-15 wt % Fe alloy powders were investigated. After milling, the powders have an agglomerate structure with a size of Al₁₃Fe₄ about 4.1–5.4 μm. Using centrifugal atomization at a blades rotation speed of 2800 rpm resulted in a microstructure consisting of α-Al-matrix, stable Al₁₃Fe₄ (10–15 μm) and random oriented short fibres of metastable Al₆Fe (2.3 ± 2.2 μm). Randomly oriented fibres are formed due to deformation processes that act on the particles during cooling and crystallization. The formation of the metastable Al₆Fe is associated with a high cooling rate of nearly 10⁶–10⁸ °C/min. The influence of the particle shape on the temperature field was simulated. The stable Al₁₃Fe₄ occurs in the centre of the powders according to the low solidification velocity. The crystallization of a uniform structure is possible for particles of regular shape. The matrix of the atomized powder has a cellular microstructure, which introduces an additional reinforcing effect to the Al-15 wt % Fe alloy.

在这项研究中，Al-15 wt % Fe 粉末使用两种方法制备：（1）在球磨机或行星磨机中研磨初始合金；(2)离心雾化。研究了雾化过程中研磨时间和温度场分布对Al-15 wt % Fe合金粉末形貌和微观结构的影响。研磨后的粉末具有团聚结构，尺寸为 Al ₁₃ Fe ₄，约为 4.1-5.4 μm。在 2800 rpm 的叶片转速下使用离心雾化产生由 α-Al 基体、稳定的 Al ₁₃ Fe ₄ (10-15 μm) 和随机取向的亚稳态 Al _{6短纤维组成的微观结构}铁 (2.3 ± 2.2 微米)。由于在冷却和结晶过程中作用于颗粒的变形过程，形成了随机取向的纤维。亚稳态 Al _{6 Fe 的形成与接近 10} ⁶ –10 ⁸  °C/min的高冷却速率有关。模拟了颗粒形状对温度场的影响。根据低凝固速度，稳定的Al ₁₃ Fe ₄出现在粉末的中心。对于规则形状的颗粒，均匀结构的结晶是可能的。雾化粉末的基体具有蜂窝状微观结构，这为 Al-15 wt % Fe 合金带来了额外的增强效果。