Dudina Dina V, Georgarakis Konstantinos
Lavrentyev Institute of Hydrodynamics SB RAS, Lavrentyev Ave. 15, Novosibirsk 630090, Russia.
Institute of Solid State Chemistry and Mechanochemistry SB RAS, Kutateladze Str. 18, Novosibirsk 630128, Russia.
Materials (Basel). 2022 Apr 2;15(7):2629. doi: 10.3390/ma15072629.
Metal matrix composites (MMCs) are a constantly developing class of materials. Simultaneously achieving a high strength and a high ductility is a challenging task in the design of MMCs. This article aims to highlight a recent trend: the development of MMCs reinforced with particles of core-shell structure. The core-shell particles can be synthesized in situ upon a partial transformation of metal (alloy) particles introduced into a metal matrix. MMCs containing core-shell particles with cores of different compositions (metallic, intermetallic, glassy alloy, high-entropy alloy, metal-ceramic) are currently studied. For metal core-intermetallic shell particle-reinforced composites, the property gain by the core-shell approach is strengthening achieved without a loss in ductility. The propagation of cracks formed in the brittle intermetallic shell is hindered by both the metal matrix and the metal core, which constitutes a key advantage of the metal core-intermetallic shell particles over monolithic particles of intermetallic compounds for reinforcing purposes. The challenges of making a direct comparison between the core-shell particle-reinforced MMCs and MMCs of other microstructures and future research directions are discussed.
金属基复合材料（MMCs）是一类不断发展的材料。在金属基复合材料的设计中，同时实现高强度和高延展性是一项具有挑战性的任务。本文旨在突出一种最新趋势：开发用核壳结构颗粒增强的金属基复合材料。核壳颗粒可在引入金属基体的金属（合金）颗粒发生部分转变时原位合成。目前正在研究含有具有不同成分（金属、金属间化合物、玻璃态合金、高熵合金、金属陶瓷）核的核壳颗粒的金属基复合材料。对于金属核 - 金属间化合物壳颗粒增强复合材料，核壳方法带来的性能提升是在不损失延展性的情况下实现强化。在脆性金属间化合物壳中形成的裂纹扩展受到金属基体和金属核的阻碍，这构成了金属核 - 金属间化合物壳颗粒相对于用于增强目的的金属间化合物整体颗粒的关键优势。文中讨论了在核壳颗粒增强金属基复合材料与其他微观结构的金属基复合材料之间进行直接比较所面临的挑战以及未来的研究方向。
