The influence of reinforcing AlN, AlB2 and BN phases, either individually or in combination, on the mechanical properties of Al-based composites fabricated via reactive ball milling of Al/BN, Al/B, and Al/Li3N powder mixtures, followed by their spark plasma sintering (SPS) was studied. An increase in tensile strength by 135 % (20 C) and 185 % (500 C) compared to pure Al was achieved in the Al/BN composites where BN, AlN, and AlB2 phases simultaneously formed. Density Functional Theory (DFT) calculations of the interface strength between Al and formed phases confirmed the experimental data. The obtained results demonstrated that the combination of reactive ball milling and SPS is a promising technique allowing for the formation of reinforcing phases from source materials.

中文翻译：

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用 AlB 2 、AlN 和 BN 相增强的铝基复合材料：实验和理论研究

单独或组合增强 AlN、AlB2 和 BN 相对通过反应球磨 Al/BN、Al/B 和 Al/Li3N 粉末混合物制备的铝基复合材料的机械性能的影响，然后是它们的研究了放电等离子烧结（SPS）。在同时形成 BN、AlN 和 AlB2 相的 Al/BN 复合材料中，与纯 Al 相比，拉伸强度提高了 135%（20℃）和 185%（500℃）。Al 和成形相之间的界面强度的密度泛函理论 (DFT) 计算证实了实验数据。获得的结果表明，反应性球磨和 SPS 的组合是一种很有前途的技术，可以从源材料中形成增强相。