Synthesis of bulk metallic glasses (BMGs) has been one of the hottest topics of research in materials science during this decade due to their very attractive physical and mechanical properties. In the present study Zr 59Ti 5Cu 18Ni 8Al 10 bullk metallic glasse (BMG)were produced in a ribbon form by the single roller melt-spinning method and in rod form with diameter of 2 mm at prepared through water-cooled copper mold casting. This study is primarily devoted to compare the results obtained with the two methods of the development. Thermal properties were measured by performing DSC at at different heating rates (5, 10, 15, 20 and 25°C/mn). The microstructure and constituent phase of the alloy composite have been analyzed by using X-ray diffractometry (XRD). The mechanical properties are also studied using the compression and Vickers indentation technique, respectively and morphologies of the fractured observed by Scanning Electron Microscopy (SEM). The Energy Dispersive Spectrometer (EDS) micro-analysis is performed by measuring the energy and intensity distribution of X-ray signals generated by a focused electron beam on the specimen.
Glass forming ability and mechanical properties of Zr 59Ti 5Cu 18Ni 8 Al 10 bulk metallic glasses
BARICCO, Marcello
2012-01-01
Abstract
Synthesis of bulk metallic glasses (BMGs) has been one of the hottest topics of research in materials science during this decade due to their very attractive physical and mechanical properties. In the present study Zr 59Ti 5Cu 18Ni 8Al 10 bullk metallic glasse (BMG)were produced in a ribbon form by the single roller melt-spinning method and in rod form with diameter of 2 mm at prepared through water-cooled copper mold casting. This study is primarily devoted to compare the results obtained with the two methods of the development. Thermal properties were measured by performing DSC at at different heating rates (5, 10, 15, 20 and 25°C/mn). The microstructure and constituent phase of the alloy composite have been analyzed by using X-ray diffractometry (XRD). The mechanical properties are also studied using the compression and Vickers indentation technique, respectively and morphologies of the fractured observed by Scanning Electron Microscopy (SEM). The Energy Dispersive Spectrometer (EDS) micro-analysis is performed by measuring the energy and intensity distribution of X-ray signals generated by a focused electron beam on the specimen.
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