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【复合材料】织物结构对Cf/Al复合材料微观组织与压缩性能的影响
发布时间:2020-09-11 文章来源:本站原创
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帅亮 余欢 徐志锋 胡银生 蔡长春

(南昌航空大学轻合金加工科学与技术国防重点学科实验室)

摘要: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%3D-Cf/Al复合材料。主要研究了织物结构对Cf/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Cf/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Cf/Al复合材料的致密度和压缩强度最大,分别为99.2%417 MPa;而2.5D浅交直联结构的Cf/Al复合材料的致密度和压缩强度最小,分别为95.3%99.8 MPa

关键词:织物结构;Cf/Al复合材料;微观组织;压缩强度

中图分类号:TB331;TG146.21   文献标志码    A

DOI:10.15980/j.tzzz.2020.04.015

 

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

Shuai Liang, Yu Huan, Xu Zhifeng, Hu Yinsheng, Cai Changchun

(National Defense Key Discipline Laboratory of Light Alloy Processing Science and Technology, Nanchang Hangkong University)

Abstract:ZL301 alloy was selected as the base matrix. The M40J carbon 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-Cf/Al composite with a fiber volume fraction of 50%. The effects of fabric structure on the microstructure and compressive strength of Cf/Al composites were investigated. The results show that the fabric structure has a great influence on the density and microstructure of Cf/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 Cf/Al composites with 2.5D shallow crosslinking structure have the lowest density and compressive strength of 95.3% and 99.8 MPa, respectively.

Key Words: Fabric Structure, Cf/Al Composite, Microstructure, Compressive Strength


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