With the continuous development of the electronics industry towards the direction of portability,intelligence and flexibility,amorphous alloy films have exhibited great application potential in micro-and nanoelectromechanical systems,sensors and biomedicine,owing to high strength and hardness,good wear and corrosion resistance,low surface roughness,and many other performance advantages.Thus they have become one of the most popular high-tech materials at home and abroad in recent decades.However,the brittleness at room temperature caused by shear localization and strain softening is a fatal problem for amorphous alloy films,which seriously restricts their wide application in the field of structural engineering.Therefore,strengthening and toughening of amorphous alloy films becomes research hotspot and frontier topic.In recent years,with the continuous development of production and research technology,a variety of new amorphous alloy film materials continue emer-ging.In particular,due to the high designability and controllability,composite has received extensive attention in the study of strengthening and toughening of amorphous alloy thin film.In this paper,we review several important structural design strategies of amorphous alloy composite films.Based on the constitutive relationship of 'microstructure-mechanical property-strengthening and toughening mechanism',we emphatically describe the influence of different microstructures on mechanical properties and deformation mechanisms of amorphous alloy films.The paper also includes a brief but prospective discussion on main problems and challenges in the research of this subject.
关键词
非晶合金/强韧化/复合材料/变形机制/力学行为
Key words
amorphous alloy/strengthening and toughening/composite material/deformation mechanism/mechanical behavior
维普
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