Influence of Annealing Temperature on Young's Modules and Hardness of Zr41Tii4Cui2.5NiiOBe22.5 Bulk Amorphous Alloy

摘要

Zrui2sNiioBe225 bulk amorphous alloy annealed at different temperatures were studied by nanoindentation, XRD and DSC. The results shows that the phase composition of the bulk amorphous alloy annealed at different temperatures were different The degree of crystallization of Zr-based bulk amorphous alloy increased with the increase of the annealing temperature. The results of nanoindentation show that Young's modules (Er) and hardness (Hv) of Zr-based bulk amorphous alloy decreased with the increase of loading at the same annealing temperature. Under glass transformation temperature (Tg), Er and Hv of Zr-based bulk amorphous alloy decreased with the increase of anneal temperature at the same loading. Above Tg, Er and Hv of Zr-based bulk amorphous alloy increased with the increase of anneal temperature at the same loading. Er and Hv of Zr-based bulk amorphous alloy decreased with the increase of anneal temperature when temperature exceeded the crystallization temperature. The plastic deformation of Zr-based bulk amorphous alloy was influenced by temperature and loading. The ability of plastic deformation increased with adding loading between glass transformation temperature (Tg) and crystallization temperature (Tx).