Dudina, Dina V.Georgarakis, Konstantinos2022-04-062022-04-062022-04-02Dudina DV, Georgarakis K. (2022) Core - shell particle reinforcements - a new trend in the design and development of metal matrix composites, Materials, Volume 15, Issue 7, April 2022, Article number 2629.1996-1944https://doi.org/10.3390/ma15072629https://dspace.lib.cranfield.ac.uk/handle/1826/17746Metal 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.enAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/core–shell particlereinforcementmetal matrix compositeinterfaceArticle