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:
In order to examine the correlation between a mechanical property and an excess free volumefor metallic glass Pd44Cu31Ni8P17, longitudinal and transverse ultrasonic velocities were measured toestimate longitudinal and transverse elastic constants, c11 and c44. An as-quenched sample, an annealedone at a temperature just below a glass transition temperature Tg and a crystalline one were prepared. Theas-quenched sample contains the excess free volume depending on the preparing process. The Young’smodulus 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 freevolume by about 0.2 % and much smaller than those of the crystalline one. The Poisson’s ratio for theas-quenched sample and the annealed one are 0.389 and 0.387, respectively, which are much larger thanthat for the crystalline one with 0.349
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/18/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.561-565.1303.pdf
Permalink