超声振动对Fe-Ti-C/Al复合材料性能的影响  

Effect of Ultrasonic Vibration on Properties of Fe-Ti-C/Al Composites

作　　者：王秋林[1] 耿文霞[1] 黄德明 徐如涛[1] 戴祥利 李昂 WANG Qiulin;GENG Wenxia;HUANG Deming;XU Rutao;DAI Xiangli;LI Ang(Chengdu Aeronautic Polytechnic,Chengdu 610100,China;Chongqing Jiaotong University,Chongqing 400074,China;Avic Chengfei Commercial Aircraft Co.,Ltd,Chengdu 610092,China)

机构地区：[1]成都航空职业技术学院,成都610100 [2]重庆交通大学机电与车辆工程学院,重庆400074 [3]中航成飞民用飞机有限责任公司,成都610092

出　　处：《成都航空职业技术学院学报》2020年第2期44-47,共4页Journal of Chengdu Aeronautic Polytechnic

基　　金：四川省教育厅自然科学一般项目“航空铝合金表面原位合成AlxCry/Al2O3涂层、强化机理及失效机制研究”(编号18ZB0058);成都航空职业技术学院自然科研重点项目“制动盘用Fe-Ti-C体系增强铝基复合材料的制备”(编号061623Y)的阶段成果之一。

摘　　要：采用铸造法制备铝基复合材料时,有较大氧化和吸气倾向,容易出现气孔等缺陷,因此引入了超声振动辅助技术制备了Fe-Ti-C/Al复合材料。采用扫描电镜(SEM)观察复合材料形貌,用X-射线衍射仪(XRD)做物相分析,并测试了复合材料的硬度、拉伸性能和压缩性能。结果表明,复合材料中的增强体呈长条状和团絮状,施加超声振动后的增强体在基体中分布更加均匀,气孔、缩松等孔洞类缺陷得到了明显的改善;在力学性能方面,与未施加超声振动的复合材料相比,其硬度提高了30.2%,抗拉强度σb提高了17.7%,抗压强度σbc提高了1.2%。When manufactured by casting method,aluminum matrix composites tends to be oxidized and gas absorbent and are prone to defects like pores.Therefore,aided technology of ultrasonic vibration is introduced to prepare Fe-Ti-C/Al composite materials.Scanning electron microscope(SEM)is used to observe the morphology of composite materials,and X-ray diffractometer(XRD)is used for phase analysis.The hardness,tensile properties and compressive properties of the composite materials are tested.The results show that the reinforcements in the composites are elongated or flocculent.After ultrasonic vibration,the reinforcements are more uniformly distributed in the matrix,and hole defects such as pores and shrinkage have been significantly improved.In terms of mechanical properties,compared with composite materials without ultrasonic vibration,its hardness has increased by 30.2%,tensile strengthσb has increased by 17.7%,and compressive strengthσbc has increased by 1.2%.

关 键 词：复合材料 凝固 超声振动 力学性能 

分 类 号：V257[一般工业技术—材料科学与工程]