TITLE

The correlation between shear elastic modulus and glass transition temperature of bulk metallic glasses

AUTHOR(S)
Zhibin Lu; Jiangong Li; Hang Shao; Gleiter, H.; Xia Ni
PUB. DATE
March 2009
SOURCE
Applied Physics Letters;3/2/2009, Vol. 94 Issue 9, pN.PAG
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Based on Varshni equation, the shear elastic modulus at the glass transition temperature [G(Tg)] and the shear elastic modulus at 0 K [G(0)] were calculated from the elastic modulus measured at room temperature for various bulk metallic glasses (BMGs). The G(Tg)/G(0) ratios for various BMGs are almost the same and have a value around 0.85. This unique correlation implies that the glass transition occurs when the shear modulus of a BMG decreases to about 85% of G(0). This correlation between shear modulus and glass transition is of significance in understanding the glass transition of BMGs.
ACCESSION #
36940972

 

Related Articles

  • Pressure effect of glass transition temperature in Zr[sub 46.8]Ti[sub 8.2]Cu[sub 7.5]Ni[sub 10]Be[sub 27.5] bulk metallic glass. Jiang, J.Z.; Roseker, W.; Sikorski, M.; Cao, Q.P.; Xu, F. // Applied Physics Letters;3/15/2004, Vol. 84 Issue 11, p1871 

    Pressure effects on glass transition temperature and supercooled liquid region of a Zr[sub 46.8]Ti[sub 8.2]Cu[sub 7.5]Ni[sub 10]Be[sub 27.5] bulk glass have been investigated by performing in situ high-temperature and high-pressure x-ray powder diffraction measurements using synchrotron...

  • Refractory Mo-Si-based glassy alloy designed for ultrahigh strength and thermal stability. Zhang, X. Q.; Wang, W.; Ma, E.; Xu, J. // Journal of Materials Research;Nov2005, Vol. 20 Issue 11, p2910 

    Mechanically alloyed Mo44Si26Ta5Zr5Fe3Co12Y5 multicomponent glassy alloy exhibits an exceptionally high glass transition temperature of 1202 K and a crystallization temperature of 1324 K, as well as an ultrahigh hardness of 18 GPa. This example is used to demonstrate metallic glasses that...

  • Statistical Mechanics of Metallic Glasses and Liquids. Egami, T.; Levashov, V. A.; Morris, J. R.; Haruyama, O. // Metallurgical & Materials Transactions. Part A;Jul2010, Vol. 41 Issue 7, p1628 

    It is difficult to formulate the statistical mechanical theory of liquids and glasses, because phonons, which are the basis for the statistical mechanics of lattice dynamics in crystals, are strongly scattered and have a very short lifetime in liquids and glasses. Instead computer simulation and...

  • Correlation between average melting temperature and glass transition temperature in metallic glasses. Zhibin Lu; Jiangong Li // Applied Physics Letters;2/9/2009, Vol. 94 Issue 6, pN.PAG 

    The correlation between average melting temperature (〈Tm〉) and glass transition temperature (Tg) in metallic glasses (MGs) is analyzed. A linear relationship, Tg=0.385〈Tm〉, is observed. This correlation agrees with Egami’s suggestion [Rep. Prog. Phys. 47, 1601...

  • Thermal activation in Au-based bulk metallic glass characterized by high-temperature nanoindentation. Yang, Bing; Wadsworth, Jeffrey; Nieh, Tai-Gang // Applied Physics Letters;2/5/2007, Vol. 90 Issue 6, p061911 

    High-temperature nanoindentation experiments have been conducted on a Au49Ag5.5Pd2.3Cu26.9Si16.3 bulk metallic glass from 30 to 140 °C, utilizing loading rates ranging from 0.1 to 100 mN/s. Generally, the hardness decreased with increasing temperature. An inhomogeneous-to-homogeneous flow...

  • STUDY OF GLASS TRANSITION KINETICS IN GLASSY ALLOYS OF Se100-xBix. Srivastava, Sphoorti; Zulfequar, M.; Kumar, A. // Chalcogenide Letters;Sep2009, Vol. 6 Issue 9, p403 

    Differential scanning calorimetric runs have been taken for Se100-x Bix (x = 0.5, 2.5, 4, 6, 10) glasses under non-isothermal conditions at different heating rates for the thermal study. Well defined endothermic and exothermic peaks are obtained at glass transition (Tg) and crystallization...

  • Non-debye nature in thermal relaxation and thermal properties of lithium borate glasses studied by modulated DSC. Matsuda, Y.; Matsui, C.; Ike, Y.; Kodama, M.; Kojima, S. // Journal of Thermal Analysis & Calorimetry;Sep2006, Vol. 85 Issue 3, p725 

    Complex heat capacity, C p*= C p'� iC p'', of lithium borate glasses xLi2O�(1� x)B2O3 (molar fraction x=0.00�0.30) has been investigated by Modulated DSC. We have analyzed the shape of C p* by the Cole-Cole plot, performed fitting by the Havriliak-Negami equation, and then...

  • Quantification of amorphous content in maltitol by. Lappalainen, Minna; Pitkänen, Ilkka // Journal of Thermal Analysis & Calorimetry;May2006, Vol. 84 Issue 2, p345 

    A method was developed for the quantification of low levels of amorphous content in maltitol with StepScan DSC. The method was based on the fact that the change of specific heat at the glass transition is linearly proportional to the amorphous content. The influence of different measurement...

  • The glass-to-liquid transition of the emulsified high-density amorphous ice made by pressure-induced amorphization. Mishima, Osamu // Journal of Chemical Physics;8/15/2004, Vol. 121 Issue 7, p3161 

    Emulsified high-density amorphous ice, made by pressure-induced amorphization of emulsified ice Ih, was decompressed at about 160 K. The onset of an endothermic event was observed around 0.4 GPa during the decompression. This is consistent with existence of the glass transition to a liquid...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics