Ti颗粒表面包覆处理对镁基复合材料界面及力学性能的影响OACSTPCD
Effect of Ti Particle Surface Coating Treatment on the Interface and Mechanical Properties of Mg Matrix Composites
以AZ91D作为基体,Ti颗粒和利用电爆沉积法在Ti颗粒表面包覆Al的Al-Ti颗粒作为增强颗粒,使用搅拌铸造工艺分别制备了Tip/AZ91D和(Al-Ti)p/AZ91D两种复合材料.使用扫描电子显微镜(SEM)对复合材料中Ti颗粒分布的均匀性进行了观察,并进一步的对增强体与基体间的界面进行了分析.通过拉伸试验,考察了复合材料的屈服强度、抗拉强度及伸长率等力学性能指标,并对断口进行了分析.由于表面包覆后的Al-Ti颗粒能够提供更好的界面结合,因此与Tip/AZ91D复合材料相比(Al-Ti)p/AZ91D复合材料具有更高的力学性能.
In this study,based on AZ91D,Ti particles and Al-Ti particles coated with Al on the surface of Ti particles by the electroexplosive deposition method were used as reinforced particles.Tip/AZ91Dand(Al-Ti)p/AZ91D composites were produced by the stirring casting process,respectively.The uniformity of distribution of reinforced particles was observed by scanning electron microscopy(SEM),and the interface between the reinforced particles and the matrix were further analyzed.Besides,tensile tests were experimented on the composites,that the indexs of mechanical properties such as tensile strength,yield strength,and elongation of the composites were studied on and the fracture of the composites was analyzed.Since Al-Ti particles coated on the surface could significantly increase the thickness of the interfacial layer,and its special cloud-like interfacial layer made the pinning effect more obvious,compared with Tip/AZ91D composites,(Al-Ti)p/AZ91D composites had higher mechanical properties.
汪逸飞;李新涛;郑开宏;刘建永;韩胜利;潘复生
湖北汽车工业学院材料科学与工程学院,湖北十堰 442002||广东省科学院新材料研究所,广东广州 510650广东省科学院新材料研究所,广东广州 510650湖北汽车工业学院材料科学与工程学院,湖北十堰 442002
金属材料
Ti颗粒镁基复合材料表面包覆界面结构力学性能
Ti particlesmagnesium matrix compositesurface coatinginterface structuremechanical properties
《铸造》 2024 (004)
498-502 / 5
广东省科学院建设国内一流研究机构行动专项资金项目(2020GDASYL-20200101001);广东省基础与应用基础研究重大项目(2020B0301030006).
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