CAJ | 학술논문

综述了利用准晶作为镁、铝合金增强相的研究进展.Mg_3Zn_6Y准晶的界面能低,与α-Mg基体之间形成稳定的界面结合,在高温变形过程中,准晶本身不发生粗化且可以抑制基体组织演化,因此,Mg_3Zn_6Y准晶增强变形Mg基复合材料具有中等强度和较高的室温、高温塑性.由于到目前为止发现的Al系稳定准晶都不与Al相共生,准晶增强Al基复合材料主要采用快速凝固的方法和外加的方法制备,如粉末冶金法、机械合金化法和液态搅拌法等.综述了采用以上方法制得的准晶增强Al基复合材料的组织特征及其力学性能.
종술료이용준정작위미、려합금증강상적연구진전.Mg_3Zn_6Y준정적계면능저,여α-Mg기체지간형성은정적계면결합,재고온변형과정중,준정본신불발생조화차가이억제기체조직연화,인차,Mg_3Zn_6Y준정증강변형Mg기복합재료구유중등강도화교고적실온、고온소성.유우도목전위지발현적Al계은정준정도불여Al상공생,준정증강Al기복합재료주요채용쾌속응고적방법화외가적방법제비,여분말야금법、궤계합금화법화액태교반법등.종술료채용이상방법제득적준정증강Al기복합재료적조직특정급기역학성능.
The investigation of using quasicrystal as reinforcement in Mg and Al matrix composites is reviewed.The interracial energy of Mg_3Zn_6 Y quasicrystal is low, providing stable interracial bounding with α-Mg matrix. During the deformation process at elevated temperatures, the quasicrystalline particles are stable against coarsening and also they can prohibit microstructural evolution of the α-Mg matrix. As a result, Mg_3Zn_6 Y quasicrystalline particle reinforced wrought Mg matrix composites possess moderate strength and high room and elevated temperature ductility.Since no Al-system quasicrystals are found to coexist with Al matrix, Al matrix composites reinforced by quasicrystalline particles are mainly fabricated by rapid solidification, powder metallurgy, mechanical alloying and melt stirring methods, etc. In this article, the microstructure characteristics and mechanical properties of the quasicrystal reinforced Al matrix composites produced by these methods are reviewed.