Title :
Micro-electro-discharge Machining of Bulk Metallic Glasses
Author :
Xingchao, Zhang ; Yong, Zhang ; Hao, Tong ; Li Yong ; Xiaohua, Chen ; Guoliang, Chen
Author_Institution :
Univ. of Sci. & Technol. Beijing, Beijing
Abstract :
Microholes and three-dimensional microstructures machined on the La62Al14Ni12Cu12, Zr55Al10Ni5Cu30 and Cu46Zr44Al7Y3 bulk metallic glasses by micro-electro-discharge machining are evaluated in this study. The recast layer and heat affected zone surrounding the entry edge of the holes and the surface quality of three-dimensional microstructures were qualitatively analyzed using SEM, and the mechanical performance tests around the holes were carried out by nanoindentation. The experiment results demonstrated that the machined samples kept the amorphous structure without devitrification and the machining characteristics are related to the thermophysical properties of the alloys.
Keywords :
aluminium alloys; amorphous state; copper alloys; indentation; lanthanum alloys; mechanical testing; metallic glasses; micromachining; nickel alloys; scanning electron microscopy; yttrium alloys; zirconium alloys; Cu46Zr44Al7Y3; La62Al14Ni12Cu12; SEM; Zr55Al10Ni5Cu30; amorphous structure; bulk metallic glasses; devitrification; mechanical performance tests; micro-electro-discharge machining; microholes; nanoindentation; recast layer; surface quality; thermophysical properties; three-dimensional microstructures; Copper; Crystallization; Electrodes; Glass; Inorganic materials; Machining; Microstructure; Performance analysis; Temperature; Testing;
Conference_Titel :
High Density packaging and Microsystem Integration, 2007. HDP '07. International Symposium on
Conference_Location :
Shanghai
Print_ISBN :
1-4244-1253-6
Electronic_ISBN :
1-4244-1253-6
DOI :
10.1109/HDP.2007.4283595
