Sound velocity in liquid and glassy selenium

Correlated atomic motions in glassy selenium.

The elastic and total (energy-integrated) structure factors for glassy selenium have been measured by means of neutron spectroscopy within the temperature range 15 K& T & 310 K. The correlated nature of the atomic vibrations gives rise to marked features in the total (energy-integrated) inelastic structure factors defined as the difference between the total and elastic intensities. Also, both s...

High-Frequency Dynamics in Glassy Selenium

Fig. 1. IXS spectra of g-Se (solid circles) for several momentum transfers, indicated by labels in units of nm-1. The instrument resolution (dotted line) and the best fit lineshape (continuous line) according to the model discussed in the text (corrected for resolution broadening and detailed balance factor) are also indicated. The investigation of short wavelength acoustic modes in glasses has...

Influence of Aging Temperature on Mechanical Properties and Sound Velocity in Maraging Steel M350

In the present work, the influence of aging temperature on mechanical properties and sound velocity of Maraging steel M350 was investigated. For this purpose, first, samples were solution annealed at 825◦C for 2 hours and then age hardened at 510◦C-600◦C for 3 hours. Hardness, tensile and impact tests were used for determining mechanical properties and longitudinal ultrasonic velocity was used ...

Nature of the first diffraction peak in glassy selenium.

The physical signi6cance of the 6rst di8'raction peak in glassy Se is discussed in the light of recent experimental results regarding the temperature dependence of the parameters characterizing the first peaks in the elastic S(Q, u = 0) and static S(Q) structure factors. The rather different behavior with temperature of both peaks as well as a comparison with the behavior observed for a polycry...

Sound velocity in carbon suboxide.