Paper Title:
Comparison of Mechanical Properties between As-Quenched and Annealed Metallic Glass Pd44Cu31Ni8P17
  Abstract

In order to examine the correlation between a mechanical property and an excess free volume for metallic glass Pd44Cu31Ni8P17, longitudinal and transverse ultrasonic velocities were measured to estimate longitudinal and transverse elastic constants, c11 and c44. An as-quenched sample, an annealed one at a temperature just below a glass transition temperature Tg and a crystalline one were prepared. The as-quenched sample contains the excess free volume depending on the preparing process. The Young’s modulus E, the Poisson’s ratio, a bulk modulus and c12 are estimated using c11 and c44. The values of c11, c 44 , c12 and E of the as-quenched one are smaller than those of the annealed sample losing excess free volume by about 0.2 % and much smaller than those of the crystalline one. The Poisson’s ratio for the as-quenched sample and the annealed one are 0.389 and 0.387, respectively, which are much larger than that for the crystalline one with 0.349.

  Info
Periodical
Materials Science Forum (Volumes 561-565)
Main Theme
Edited by
Young Won Chang, Nack J. Kim and Chong Soo Lee
Pages
1303-1306
DOI
10.4028/www.scientific.net/MSF.561-565.1303
Citation
T. Fukami, M. Fukatani, D. Okai, T. Yamasaki, O. Haruyama, A. Inoue, "Comparison of Mechanical Properties between As-Quenched and Annealed Metallic Glass Pd44Cu31Ni8P17", Materials Science Forum, Vols. 561-565, pp. 1303-1306, 2007
Online since
October 2007
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