Production of Zr55Cu30Ni5Al10 glassy alloy rod of 30 mm in diameter by a cap-cast technique

Abstract

In order to produce bulk glassy alloys with diameters above 1 cm, various cast techniques have been developed. The maximum diameter of Zr 55Cu30Ni10 allio alloy achieved was 16 mm by the copper metallic mold cast technique and 20 mm by the tilt cast technique. In order to produce a much larger sized bulk glassy alloy, a cap-cast technique, leading to the achievement of a higher cooling rate even in an upper region, was developed through the modification of the tilt, casting technique. This paper presents the production of a glassy Zr55Cu30Ni 10 alloy rod with a diameter of 30 mm. © 2007 The Japan Institute of Metals.