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[资源] 【资源】原位生成金属基复合材料的微观结构和力学性能

原位生成金属基复合材料的微观结构和力学性能

During the past decade, considerable research effort has been directed towards the development of in situ
metal matrix composites (MMCs), in which the reinforcements are formed in situ by exothermal reactions between
elements or between elements and compounds. Using this approach, MMCs with a wide range of matrix materials
(including aluminum, titanium, copper, nickel and iron), and second-phase particles (including borides, carbides,
nitrides, oxides and their mixtures) have been produced. Because of the formation of ultrafine and stable ceramic
reinforcements, the in situ MMCs are found to exhibit excellent mechanical properties. In this review article, current
development on the fabrication, microstructure and mechanical properties of the composites reinforced with in situ
ceramic phases will be addressed. Particular attention is paid to the mechanisms responsible for the formation of in
situ reinforcements, and for creep failure of the aluminum-based matrix composites. # 2000 Elsevier Science S.A.

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