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汽车工业在美国、日本等许多发达国家中都是重要的支柱产业。发动机是汽车的心脏，而活塞又是心脏中的心脏。由于汽车时速的不断提高，发动机汽缸内的局部压力差及温度上升等问题，要求材料不仅重量要减少，还要有较好的耐热性及耐磨性等机械性能。众所周知，铝是一种特别轻的金属，有突出的热导特性和电导特性。然而，由于铝的熔点低，强度低，并且有较高的热膨胀系数，因而，其耐热性较差。尽管有这些限制，但可以通过合金化和热处理的方法来增强其强度、硬度、耐磨性、耐热性并降低其线膨胀系数，以获得良好的机械性能。我们知道，加入硅元素可以提高合金的耐磨性，但由于活塞的工作条件要求，不仅要提高合金的耐磨性，而且提高合金的耐热性能也是至关重要的。作为耐热性的元素铁的加入，不仅可以提高合金的耐磨性，而且可以显著提高合金的耐热性能。但传统的铸造方法限制了硅、铁元素的含量，采用快速凝固粉末冶金的生产方法不仅提高了硅、铁元素含量，而且，使晶粒超细化，并促进金属间化合物Al3Fe的形成，这种金属间化合物熔点高、硬度大，使合金具有较高的耐热性和耐磨性，且线膨胀系数降低，提高了合金的机械性能。
The automobile industry is an important pillar industry in many developed countries such as the United States and Japan. The engine is the heart of the car, and the piston is the heart of the heart. Due to the continuous improvement of the car speed, the partial pressure difference in the engine cylinder and the temperature rise, the requirements of the material not only reduce the weight, but also have better heat resistance and abrasion resistance and other mechanical properties. It is well-known that aluminum is a particularly light metal with outstanding thermal and electrical conductivity properties. However, aluminum has poor heat resistance due to its low melting point, low strength, and high coefficient of thermal expansion. Despite these limitations, the strength, hardness, wear resistance, heat resistance and the linear expansion coefficient thereof can be enhanced by alloying and heat treatment to obtain good mechanical properties. We know that adding silicon can improve the wear resistance of the alloy, but due to the working conditions of the piston, not only to improve the wear resistance of the alloy, but also improve the heat resistance of the alloy is also crucial. As a heat-resistant elemental iron added, not only can improve the wear resistance of the alloy, but also can significantly improve the heat resistance of the alloy. However, the conventional casting method limits the content of silicon and iron, and the method of production by rapid solidification powder metallurgy not only increases the content of silicon and iron, but also ultrafines the grain and promotes the formation of the intermetallic compound Al3Fe The intermetallic compound has high melting point and high hardness, which makes the alloy have high heat resistance and wear resistance, and the linear expansion coefficient is reduced, thereby improving the mechanical properties of the alloy.