Open AccessStudy of the crystallization kinetics of Zr60Al15Ni2 5 bulk glassy alloy
Author(s) -
Yan Zhi-Jie,
Jin-Fu Li,
Honghua Wang,
Yaohe Zhou
Publication year - 2003
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.52.1867
Subject(s) - materials science , alloy , crystallization , kinetics , amorphous metal , thermodynamics , chemical engineering , metallurgy , physics , quantum mechanics , engineering
This paper reports the investigation on the crystallization kinetics of Zr6 0 Al15Ni25 bulk glassy alloy under isothermal annealin g by differential scanning calorimetry. The results show that the incubation time is very smal l even at a low annealing temperature (743 K) and the exothermic peak width, ref lecting the time for the actual crystallization process, increases greatly when annealing temperature decreases. This suggests a growth-controlled crystallizati on process. The Avrami exponents indicate that the crystallization mechanism cha nges at different annealing temperatures. The change of the crystallization mech anism is attributed to the great change of the mobility of atoms at different te mperatures.