The effect of high-temperature deformation conditions on the mechanical properties of composites produced from aluminum powders with different particle sizes reinforced by SiC, TiC, and AlB₁₂ nanoparticles was examined. High-temperature extrusion promoted uniform distribution of the nanoparticles in the aluminum matrix. At an optimum nanoparticle content (4 wt.%), the most uniform distribution of particles following deformation was shown by the composites produced from a fine size fraction of the aluminum powder. Subsequent high-temperature rolling promoted significant strain hardening (up to 120 MPa) through thermokinetic deformation conditions giving rise to dislocation substructures and activating dynamic recrystallization processes. In all cases, the hardening rate at the initial stage of high-temperature rolling (first pass) was higher than at the subsequent stages when recovery processes activated. The abnormal decrease in strength of the samples subjected to asymmetric rolling to reach high strains was associated with intensification of shear deformation, increasing the ribbon internal energy and thus accelerating the annealing of deformation defects. Among the nanopowder reinforcements, the best mechanical behavior was demonstrated by SiC nanoparticles, whose structural features promoted the best bonding between the particles and the matrix. The samples with AlB₁₂ nanoparticles showed lower hardening because of somewhat weaker bonding and process-induced particles. Titanium carbide nanoparticles provided the worst hardening of the composite because of insufficient bonding with the matrix. The tested deformation conditions, along with the optimal choice of powder components for the composites, allow the production of high-strength ribbons (aluminum metal-matrix composites) employing a relatively simple powder technique. A further increase in the ribbon strength should be promoted by the use of doped aluminum powders following upgrade of the deformation conditions.

高温变形条件对SiC、TiC和AlB ₁₂增强的不同粒径铝粉复合材料力学性能的影响纳米粒子进行了检查。高温挤压促进了纳米颗粒在铝基体中的均匀分布。在最佳纳米颗粒含量 (4 wt.%) 下，变形后颗粒的最均匀分布由由细小尺寸铝粉制成的复合材料显示。随后的高温轧制通过热力学变形条件促进显着的应变硬化（高达 120 MPa），从而产生位错子结构并激活动态再结晶过程。在所有情况下，高温轧制初始阶段（第一道次）的硬化率高于恢复过程启动时的后续阶段。非对称轧制达到高应变的试样强度异常下降与剪切变形的加剧、带内能的增加从而加速变形缺陷的退火有关。在纳米粉末增强材料中，碳化硅纳米颗粒表现出最佳的机械性能，其结构特征促进了颗粒与基体之间的最佳结合。带有 AlB 的样品₁₂纳米粒子表现出较低的硬化，因为键合和过程诱导的粒子稍弱。由于与基体的结合不足，碳化钛纳米颗粒提供了最差的复合材料硬化。经过测试的变形条件以及复合材料粉末成分的最佳选择，允许采用相对简单的粉末技术生产高强度带（铝金属基复合材料）。在变形条件升级后，应通过使用掺杂铝粉来促进带强度的进一步增加。