3D打印制备SiC预制体增强铝基复合材料的微观组织
发布时间：2018-12-18 06:02
【摘要】：采用3D打印制备SiC陶瓷预制体,用压力浸渗工艺制备SiC增强A356基复合材料(SiC/A356复合材料),采用光学显微镜(OM)、扫描电镜(SEM)、能谱仪(EDS)及X射线衍射仪(X-ray)等对其物相、组织形貌等进行研究。结果表明,用该方法制备的SiC/A356复合材料组织致密,颗粒分布均匀,颗粒与基体的界面结合性能较好;SiC增强与A356基体界面反应控制良好,未检测到Al_4C_3脆性相生成,表明A356合金中的Si有利于防止脆性相Al4C3的形成,Mg元素的存在提高了A356基体和SiCp增强体之间的润湿性。
[Abstract]:SiC ceramic preforms were prepared by 3D printing, SiC reinforced A356 matrix composites (SiC/A356 composites) were prepared by pressure-impregnation process, and (SEM), was obtained by (OM), scanning electron microscope (SEM). The phase and microstructure were studied by (EDS) and X-ray. The results show that the SiC/A356 composites prepared by this method have dense microstructure, uniform particle distribution and good interfacial bonding properties between the particles and the matrix. The interfacial reaction between SiC reinforcement and A356 matrix was well controlled, and no formation of Al_4C_3 brittle phase was detected, indicating that Si in A356 alloy was beneficial to prevent the formation of brittle phase Al4C3, and the wettability between A356 matrix and SiCp reinforcements was improved by the presence of Mg element.
【作者单位】： 中南大学材料科学与工程学院;广东省材料与加工研究所;广东省金属强韧化技术与应用重点实验室;中科院广州电子技术有限公司;
【基金】：广东省增材制造(3D打印)技术项目(2015B010122003) 广东省科学院科研平台环境与能力建设专项(2016GDASPI-0102) 广东省应用型科技研发专项资金项目(2015B090920004) 广东省社会发展领域项目(2014B020216008) 广东省属科研机构改革创新项目(2016B070701024)
【分类号】：TB333
[Abstract]:SiC ceramic preforms were prepared by 3D printing, SiC reinforced A356 matrix composites (SiC/A356 composites) were prepared by pressure-impregnation process, and (SEM), was obtained by (OM), scanning electron microscope (SEM). The phase and microstructure were studied by (EDS) and X-ray. The results show that the SiC/A356 composites prepared by this method have dense microstructure, uniform particle distribution and good interfacial bonding properties between the particles and the matrix. The interfacial reaction between SiC reinforcement and A356 matrix was well controlled, and no formation of Al_4C_3 brittle phase was detected, indicating that Si in A356 alloy was beneficial to prevent the formation of brittle phase Al4C3, and the wettability between A356 matrix and SiCp reinforcements was improved by the presence of Mg element.
【作者单位】： 中南大学材料科学与工程学院;广东省材料与加工研究所;广东省金属强韧化技术与应用重点实验室;中科院广州电子技术有限公司;
【基金】：广东省增材制造(3D打印)技术项目(2015B010122003) 广东省科学院科研平台环境与能力建设专项(2016GDASPI-0102) 广东省应用型科技研发专项资金项目(2015B090920004) 广东省社会发展领域项目(2014B020216008) 广东省属科研机构改革创新项目(2016B070701024)
【分类号】：TB333
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