Last. Radik R. Mulyukov(USPTU: Ufa State Petroleum Technological University)H-Index: 16
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In this paper, we study a composite material of the hybrid Al–Nb system fabricated by the method of severe plastic deformation by high-pressure torsion (HPT) up to 30 revolutions. To obtain a composite material, a three-layer Al–Nb–Al stack was subjected to deformation at room temperature on Bridgman anvils under a pressure of 5 GPa at N = 10, 25, and 30 revolutions and a deformation rate of ω = 1 and 2 rpm. The initial diameters of the pure aluminum and niobium disks, as well as the HPT conditi...
We investigate the influence of preliminary energy-mechanical treatment (EMT) of the initial Co–Cr–Mo-based powders in the vortex layer of ferromagnetic bodies on the structure-mechanical properties of products obtained by the spark plasma sintering (SPS). To study the properties of the powder and the sintered samples, we employed the scanning electron microscopy (SEM), the optical microscopy, the value determination of the flexural strength and the microhardness on the Vickers scale. We show th...
The method of broadband laser-ultrasonic spectroscopy based on laser thermooptical excitation of broadband acoustic pulses is used to obtain the frequency dependences of the phase velocity of longitudinal acoustic waves in composite materials. The frequency dependences of the phase velocity in the 0.8–10 MHz spectral range are studied for samples of the unidirectional carbon fiber reinforced plastics with various volume contents of the matrix and fiber. The occurrence of the phase velocity dispe...
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