纤维编织结构对3D-C_(f)/Al复合材料弯曲性能的影响  

Effects of Woven Structure on Bending Properties of 3D-C_(f)/Al Composites

作　　者：周光瑞 贺辛亥 梁军浩 马静妍 刘羿 徐雅琪[2] 梁欢欢 Zhou Guangrui;He Xinhai;Liang Junhao;Ma Jingyan;Liu Yi;Xu Yaqi;Liang Huanhuan(School of Materials Engineering,Xi'an Polytechnic University;School of Computer Science,Xijing University)

机构地区：[1]西安工程大学材料工程学院 [2]西京学院计算机学院

出　　处：《特种铸造及有色合金》2023年第5期630-634,共5页Special Casting & Nonferrous Alloys

基　　金：陕西省重点研发计划资助项目(2020GY-273);陕西省秦创原纺织结构复合材料“科学家+工程师”队伍建设项目(2022KXJ-013);西安工程大学柯桥纺织产业创新研究院产学研协同创新项目(19KQZD01);陕西省教育厅科研计划资助项目(21JK0954)。

摘　　要：为研究纤维编织结构对三维编织C_(f)/Al复合材料弯曲性能的影响,选用TZ700S碳纤维作为增强纤维,通过加入轴纱改变编织结构,制备了三维四向和三维五向、全五向3种编织结构的纤维预制体。通过压力浸渗法制备了基体合金为7075铝合金的3D-C_(f)/Al复合材料,测试了弯曲力学性能并观察了断口的形貌。结果表明,3D-C_(f)/Al复合材料的弯曲性能高于基体弯曲性能,其中三维四向C_(f)/Al复合材料的弯曲强度为346.7 MPa。加入轴纱后的三维五向、全五向C_(f)/Al复合材料的弯曲性能和断裂应变均高于三维四向C_(f)/Al复合材料,而加入更多轴纱的全五向复合材料的结构性能更好,弯曲强度为399.7 MPa。To understand the effects of woven structure on the bending properties of three-dimensional braided C_f/Al composites,TZ700S carbon fiber was selected as reinforcing fibers,and the woven structure was modified by adding axial yarns to fabricate 3D-4 direction,3D-5 direction and 3D-all 5 direction preforms.3D-C_(f/)Al composites with 7075Al matrix alloy were prepared by pressure infiltration,and bending properties were tested and the fracture morphology was observed.The results indicate that the bending properties of 3D-C_f/Al composites are superior to that of alloy matrix,where the bending strength of 3D-4 direction C_f/Al composites reaches 345.5 MPa.After adding axial yarns,bending properties and fracture strain of 3D-5 direction and 3D all-5-direction C_f/Al composites are higher than those of 3D-4 direction ones,while 3D all-5 direction performance is desirable due to more axial yarns,where the bending strength is 399.7 MPa.

关 键 词：三维编织 弯曲性能 压力浸渗 三维五向 C_(f)/Al复合材料 

分 类 号：TB331[一般工业技术—材料科学与工程] TQ343[化学工程—化纤工业]