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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >The use of Nb in rapid solidified Al alloys and composites
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The use of Nb in rapid solidified Al alloys and composites

机译：在快速凝固的Al合金和复合材料中使用Nb

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摘要

The worldwide requirements for reducing the energy consumption and pollution have increased the demand of new and high performance lightweight materials. The development of nanostructured Al-based alloys and composites is a key direction towards solving this demand. High energy prices and decreased availability of some alloying elements open up the opportunity to use non-conventional elements in Al alloys and composites. In this work the application of Nb in rapid solidified Al-based alloys and Al alloys matrix composites is reviewed. New results that clarify the effect of Nb on rapid solidified Al alloys and composites are also presented. It is observed that Nb stabilises the icosahedral Al-Fe/Cr clusters, enhances the glass forming ability and shifts the icosahedral phase decomposition towards higher temperatures. Nb provides higher corrosion resistance with respect to the pure Al and Al-Fe-RE (RE: rare earth) alloys in the amorphous and crystalline states. The use of Nb as a reinforcement to produce new Al alloy matrix composites is explored. It is observed that Nb provides higher strength, ductility and toughness to the nanoquasicrystalline matrix composite. Nb appears as a new key element that can improve several properties in rapid solidified Al alloys and composites.
机译：在全球降低能源消耗和污染的要求增加了新的和高性能轻质材料的需求。纳米结构的铝合金和复合材料的发展是解决这种需求的关键方向。一些合金元素的高能源价格和减少可用性开辟了在Al合金和复合材料中使用非常规元素的机会。在这项工作中，综述了Nb在快速固化的Al基合金和Al合金基质复合材料中的应用。还提出了阐明Nb对快速凝固Al合金和复合材料的新结果。观察到Nb稳定icosaheDral al-Fe / Cr簇，增强了玻璃形成能力，并将Icosahe向前分解朝向更高的温度。 Nb在无定形和结晶状态下相对于纯Al和Al-Fe-Re（Re：稀土）合金提供更高的耐腐蚀性。探讨了使用Nb作为生产新的Al合金基质复合材料的加强件。观察到Nb为纳米碳酸混合物基质复合材料提供更高的强度，延展性和韧性。 NB表示为新的关键元件，可以改善快速固化的Al合金和复合材料中的几个性能。

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