Comparison of structural relaxation of Pd39Ni10CU30P21 bulk metallic glassunder ambient pressure and at a high pressure

Authors
Wang, LM Li, G Zhan, ZJ Sun, LL Wang, WK
Citation
Lm. Wang et al., Comparison of structural relaxation of Pd39Ni10CU30P21 bulk metallic glassunder ambient pressure and at a high pressure, PHIL MAG L, 81(6), 2001, pp. 419-423
Citations number
19
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHILOSOPHICAL MAGAZINE LETTERS
ISSN journal
09500839 → ACNP
Volume
81
Issue
6
Year of publication
2001
Pages
419 - 423
Database
ISI
SICI code
0950-0839(200106)81:6<419:COSROP>2.0.ZU;2-F
Abstract
Structural relaxations of a Pd39Ni10Cu30P21 bulk metallic glass (BMG) under ambient pressure and at a high pressure are compared by means of temperatu re-modulated differential scanning calorimetry (TMDSC) measurements. The st ructural relaxation is evaluated by the enthalpy recovery involved upon pas sing through the glass transition in the irreversible TMDSC curves. It is f ound that the isothermal relaxation of the BMG under ambient pressure leads to a lower-enthalpy state than that under a high pressure. The onset tempe rature for the enthalpy recovery process is found to exhibit a linear depen dence on the recovery enthalpy.