ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
The free volume relaxation just under the glass transition region was investigated by thehigh-resolution density measurement using the bulk metallic glasses with the compositions ofPd40Ni40P20 and Zr55Cu30Ni5Al10. The relaxation process was well described by a stretchedexponential function with Kohlrausch exponent values less than unity. The reduced free volumes inan as-quenched state were estimated as 0.0117 and 0.0353 for Pd40Ni40P20 glass and Zr55Cu30Ni5Al10glass, respectively. The specific heat curves Cp(T) for Pd42.5Cu30Ni7.5P20 alloy were obtained for thesupercooled liquid, the equilibrium liquid and the crystallized alloy. The isenthalpic Kauzmanntemperature TKH and isentropic Kauzmann temperature TKS were estimated as 471 K and 522 K,respectively, from the specific heat data
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/15/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.539-543.2059.pdf
Permalink