Open AccessPHASE FORMATION IN DROP TUBE PROCESSING FROM UNDERCOOLED Pd77.5Au6Si16.5 MELT
Author(s) -
Mao Zi-Li,
Chaorong Li,
Shao Xiu-Yu,
Chen Hong,
Wenkui Wang
Publication year - 1992
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.41.1753
Subject(s) - materials science , nucleation , drop (telecommunication) , alloy , thermodynamics , supercooling , kinetics , activation energy , phase (matter) , tube (container) , chemistry , composite material , classical mechanics , telecommunications , physics , computer science , organic chemistry
The Pd77.5Au6Si16.5 alloy was studied by means of a drop tube processing. Pd solid solution phase was found in smaller droplets (diameter D3Si was observed. The difference of free energy between underco-oled liquid and solid state, the activation energy for the formation of postcritical nuclei, tie nucleation rate and the speed of crystal growth were calculated as a function of temperature for Pd solid solution and PdsSi phases, these calculations led to time-temperature-transforma-tion curves which may be used to describe the experimental findings oa the kinetics of solidification of this alloy.