Bulk amorphous Zr57Cu20Al10Ni8Ti5 and Zr55Cu19Al8Ni8Ti5Si5 alloys prepared by arc melting

摘要

We have produced bulk amorphous materials by quenching arc melted melts in water cooled copper die. Alloys of the composition Zr57Cu20Al10Ni8Ti5 and Zr55Cu19Al8Ni8Ti5Si5 were produced in the form of small cylinders with a diameter of 3 mm and a length of 25 mm. The alloys were investigated by X-ray diffraction and thermal analysis to determine the structure and thermal properties. Complete amorphous X-ray patterns were observed for both alloys. The glass transition temperature is 362degreesC for the Zr57Cu20Al10Ni8Ti5 alloy and 363degreesC for the Zr55Cu19Al8Ni8Ti5Si5 alloy. The crystallization temperature of the Zr57Cu20Al10Ni8Ti5 alloy was measured to be 414.6degreesC. The Zr55Cu19Al8Ni8Ti5Si5 alloy has a higher crystallization temperature of 425.5degreesC. [References: 14]