AZ91D alloy composites with1.0%CNTs have been fabricated by a method combined ball milling with stirring casting.The composite was investigated using optical microscopy(OM),X-ray diffraction(XRD),Fourier transform inf...AZ91D alloy composites with1.0%CNTs have been fabricated by a method combined ball milling with stirring casting.The composite was investigated using optical microscopy(OM),X-ray diffraction(XRD),Fourier transform infrared spectroscope(FT-IR),scanning electron microscope(SEM),transmission electron microscope(TEM)and room temperature(RT)tensile test.Theresults show that CNTs were homogeneously distributed in the matrix and maintained integrated structure.The yield strength andductility of AZ91D/CNTs composite were improved by47.2%and112.2%,respectively,when compared with the AZ91alloy.Theuniform distribution of CNTs and the strong interfacial bonds between CNT and the matrix are dominated to the simultaneousimprovement of yield strength and ductility of the composite.In addition,the grain refinement as well as the finerβphase(Mg17Al12)with homogenous distribution in the matrix can also slightly assist to the enhancement of the mechanical properties of thecomposite.展开更多
基金Project(51464034) supported by the National Natural Science Foundation of ChinaProjects(GJJ151309,GJJ151010) supported by the Education Department of Jiangxi Province,China
文摘AZ91D alloy composites with1.0%CNTs have been fabricated by a method combined ball milling with stirring casting.The composite was investigated using optical microscopy(OM),X-ray diffraction(XRD),Fourier transform infrared spectroscope(FT-IR),scanning electron microscope(SEM),transmission electron microscope(TEM)and room temperature(RT)tensile test.Theresults show that CNTs were homogeneously distributed in the matrix and maintained integrated structure.The yield strength andductility of AZ91D/CNTs composite were improved by47.2%and112.2%,respectively,when compared with the AZ91alloy.Theuniform distribution of CNTs and the strong interfacial bonds between CNT and the matrix are dominated to the simultaneousimprovement of yield strength and ductility of the composite.In addition,the grain refinement as well as the finerβphase(Mg17Al12)with homogenous distribution in the matrix can also slightly assist to the enhancement of the mechanical properties of thecomposite.