This study deals with the improvement of the wear resistance of aluminum alloys by metal matrix composites (MMCs). The latter were fabricated by implanting high-speed solid particles into the metal surfaces. For that, stainless steel and Fe-based amorphous alloy particles were accelerated to the substrates using high-pressure nitrogen. The effect of multi-particle implantation, particle material properties and kinetic energy at impact, and pre-heating treatment of the substrate on particle implantation was investigated using numerical simulation. In addition, the effect of particle size on the MMCs microstructure, wear resistance, strengthening mechanism, and relative hardness was studied. The results showed that the method simultaneously achieved shot peening and metal matrix composite strengthening, that is, resulted in a double-strengthening effect. Furthermore, high-speed particle implantation effectively improved the wear resistance of the substrate: The wear volume of Fe-based amorphous alloy/Al MMCs was 5% of the untreated aluminum substrate and that of stainless steel/Al MMCs 14–44%. It is believed that laser-assisted particle implantation can be used to efficiently increase the thickness and surface properties of MMCs.

中文翻译：

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通过高速粒子植入制造金属基复合材料

本研究涉及通过金属基复合材料 (MMC) 提高铝合金的耐磨性。后者是通过将高速固体颗粒植入金属表面来制造的。为此，使用高压氮气将不锈钢和铁基非晶合金颗粒加速到基材上。使用数值模拟研究了多粒子注入、粒子材料特性和冲击动能以及衬底的预热处理对粒子注入的影响。此外，还研究了粒径对MMCs微观结构、耐磨性、强化机制和相对硬度的影响。结果表明，该方法同时实现了喷丸强化和金属基复合强化，即 产生了双重强化的效果。此外，高速粒子注入有效地提高了基体的耐磨性：Fe基非晶合金/Al MMCs的磨损量为未处理铝基体的5%，不锈钢/Al MMCs的磨损量为14-44%。据信，激光辅助粒子注入可用于有效增加 MMC 的厚度和表面特性。