CAJ | 학술논문

本文阐述了微叠层复合材料的增韧机理、制备工艺和连接难点。微叠层复合材料通过韧性层的塑性变形拦截裂纹扩展路径，屏蔽裂纹之间的桥接，改善材料的断裂韧性。目前，制备微叠层复合材料的方法主要有热压扩散成形、自蔓延高温合成、磁控溅射沉积及电子书物理气相沉积等。熔焊时，微叠层复合材料的连接难点在于焊缝组织的不均匀性，可能会造成部分熔合及其他缺陷；钎焊时微叠层复合材料的连接难点在于钎料的选择。微叠层复合材料具有高的强度和耐高温性能，而且质量较单体合金轻，在航空制造中将会起到举足轻重的作用。
본문천술료미첩층복합재료적증인궤리、제비공예화련접난점。미첩층복합재료통과인성층적소성변형란절렬문확전로경，병폐렬문지간적교접，개선재료적단렬인성。목전，제비미첩층복합재료적방법주요유열압확산성형、자만연고온합성、자공천사침적급전자서물리기상침적등。용한시，미첩층복합재료적련접난점재우한봉조직적불균균성，가능회조성부분용합급기타결함；천한시미첩층복합재료적련접난점재우천료적선택。미첩층복합재료구유고적강도화내고온성능，이차질량교단체합금경，재항공제조중장회기도거족경중적작용。
Toughening mechanism, preparation technology of microlaminate composites are reviewed. The difficulty in joining microlaminate composites is discussed brielfy. Microlaminate structure is most effective in promoting crack path interception and realizing the beneift of shielding from crack bridging and plastic deformation within the ductile phase. The preparation method of microlaminate commonly employed are hot pressing diffusion forming, selfpropagating hightemperature synthesis, magnetron sputtering and ebook physical vapor deposition and so on. The inhomogeneous of the weld could lead to lack of penetration or other metallurgi-cal defects in fusion welding. The select of the ifller metal is the main problem during brazing process. High strength, high temperature performance and low density make microlami-nate the potential material in aviation industry.