Article ID Journal Published Year Pages File Type
1503338 Scripta Materialia 2007 4 Pages PDF
Abstract

We report that an approximant phase was initially obtained in amorphous Ti40Zr20Hf20Pd20 alloy. In the initial stage of the devitrification process, the approximant phase transforms into an icosahedral (I) phase with a high thermal stability while the cF96 Zr2Ni-type (space group Fd3¯m with a = 1.25 nm and 96 atoms cell−1) particles precipitate from the amorphous matrix. Eventually the I phase grows to several hundred nanometers when annealed at about 1000 K and then transforms into the Zr2Ni-type phase with an endothermic reaction.

Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
Authors
, , , , , ,