Bulk Zr-Al-CU-Ni alloys were produced by die casting into a copper mold under Ar-atmosphere. The microstructure of fully amorphous as well as partially crystalline samples was analyzed by X-ray diffraction, scanning and transmission electron microscopy, and chemical analysis with special emphasis on the size and composition of the crystallites. The mechanical behavior of the different samples was investigated by constant compression rate tests. At room temperature the sampels show inhomogeneous deformation and, independent of the chosen composition, relatively low young's moduli of about 70 GPa, flow stresses around 2 GPa and elastic strains of up to 3
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