Crystallization kinetics and glass transition of Zr41Ti14Cu12.5Ni10-xFexBe22.5 bulk metallic glasses

The crystallization kinetics and glass transition behavior of Zr41Ti14Cu12.5Ni10-xFexBe22.5 (x = 0, 2, and 5) bulk metallic glasses (BMGs) have been investigated by means of differential scanning calorimeter under nonisothermal conditions. The glass transition temperature T-g, the onset crystallization temperature T-x, and the crystallization peak temperature T-pi of the BMGs are found to depend on the heating rate during the continuous heating. The effective activation energy and the frequency factor of the glass transition and crystallization of the BMGs are determined by the Kissinger method. The glass forming ability of the glass forming alloys has been discussed in view of the crystallization kinetics. (C) 1999 American Institute of Physics. [S0003-6951(99)04242-4].