Gd36La20Al24Co20 bulk metallic glass (BMG) was prepared by copper-mold casting. The crystallization behavior and thermal stability of Gd36La20Al24Co20 during annealing under two temperatures in supercooled liquid region and the pressures ranging from ambient pressure to\linebreak 725 MPa were investigated by XRD and DSC. High pressure was found to retard the crystallization of Gd36La20Al24Co20 BMGs. The apparent activation energy of the crystallization, E, determined by Kissinger equation increases with increasing applied pressure. The relative mechanisms were analyzed appropriately.
LIU Tong
,
ZHU Ya-Rong
,
ZHANG Tong-Wen
,
ZHANG Shou
. EFFECTS OF PREANNEALING UNDER PRESSURE ON THE CRYSTALLIZATION BEHAVIOR AND THERMAL STABILITY OF Gd36La20Al24Co20 BULK
METALLIC GLASS[J]. Acta Metall Sin, 2011
, 47(4)
: 502
-506
.
DOI: 10.3724/SP.J.1037.2011.00001
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