织物结构对C_f/Al复合材料微观组织与压缩性能的影响

选用ZL301合金为基体材料,采用2.5D浅交直联、三维正交和三维五向等3种结构编织了M40J碳纤维预制体,采用真空压力浸渗法制备纤维体积分数为50%的3D-C_f/Al复合材料。主要研究了织物结构对C_f/Al复合材料微观组织与压缩强度的影响。结果表明,织物结构对C_f/Al复合材料的致密度、微观组织和压缩性能影响较大。其中三维正交结构的C_f/Al复合材料的致密度和压缩强度最大,分别为99.2%和417MPa;而2.5D浅交直联结构的C_f/Al复合材料的致密度和压缩强度最小,分别为95.3%和99.8MPa。

Effects of Fabric Structure on Microstructure and Compressive Properties of C_f/Al Composites

ZL301 alloy was selected as the base matrix.The M40 Jcarbon fiber preform was woven by 2.5D shallow cross-linking,three-dimensional orthogonal and three-dimensional five-direction.The vacuum pressure infiltration method was used to prepare 3D-C_f/Al composite with a fiber volume fraction of 50%.The effects of fabric structure on the microstructure and compressive strength of C_f/Al composites were investigated.The results show that the fabric structure has a great influence on the density and microstructure of C_f/Al composites.The C_f/Al composites with three-dimensional orthogonal structure has the highest density and compressive strength,which are 99.2% and 417 MPa,respectively.The C_f/Al composites with 2.5D shallow cross-linking structure have the lowest density and compressive strength of 95.3% and 99.8 MPa,respectively.