中国科学E辑(英文版)
中國科學E輯(英文版)
중국과학E집(영문판)
SCIENCE IN CHINA(SCIENTIA SINICA)
2003年
6期
639-644
,共6页
闫志杰%李金富%王鸿华%何顺荣%周尧和
閆誌傑%李金富%王鴻華%何順榮%週堯和
염지걸%리금부%왕홍화%하순영%주요화
metallic glass%icosahedral phase%decomposition%short-range order
Differential scanning calorimetry (DSC) shows that repeated melting of mother ingot improves the stability of icosahedral phase (I-phase) precipitated from Zr65Al7.5Ni10Cu12.5Ag5 glass. The Kissinger analysis of crystallization implies that the effective activation energies for the precipitation of I-phase and its decomposition considerably increases due to the repeated melting of mother ingot. Repeated melting of mother ingot refines ingot microstructure. Because of structure heredity, the size of the short-range orders (SROs) in the glassy alloy produced from the mother ingot with finer microstructure becomes smaller, which makes the rearrangement of atoms more difficult, and the I-phase more stable.
