STUDY OF DAMPING PROPERTIES OF ALLOYED STEELS WITH CERAMIC-METALLIC NANOSTRUCTURED COATING FOR CRITICAL PARTS
Abuova R.Z. Suleyev D.K. Burshukova G.A.
2022National Academy of Sciences of the Republic of Kazakhstan
News of the National Academy of Sciences of the Republic of Kazakhstan, Series of Geology and Technical Sciences
2022#3Issue 45352 - 65 pp.
In this paper the damping properties of chromium-nickel vanadium steels with TIN-CU ceramic-metal nanostructure coating with different copper content of 7 and 14 at.% were studied. The elastic properties influencing the sound pressure levels at the initial moment of impact, characterized by the duration of the maximum acoustic impulse were studied. Electrical resistance is a value that characterizes the resistance of an electric circuit to the passage of an electric current. Internal friction, showing the potential of a solid sample (substrate) to dissociate the energy of mechanical vibrations. The results of the study of the acoustic and physical-mechanical characteristics of the experimental alloys allow the following conclusions to be drawn. There is a close correlation between the internal friction and the sound level of the alloys. Experiments on investigation of amplitude dependence of internal friction allowed revealing the dislocation mechanism of attenuation in the investigated alloys. The specific electrical resistance of the experimental alloys after hot forging and further air cooling has a fairly wide range from 410-6 to 1110-6. Normalization and quenching contribute to a decrease in the resistivity. Use of a JSM-6700F field emission scanning electron microscope with a JED-2300F energy dispersive spectrometry unit from JEOL (Japan) is associated with high image quality and resolution, which enables quantitative morphological analysis of the microscopic structure and composition of elements, showing the presence of nanostructure with layers of different nitride phases noticeably distinguishable by contrast.
nanostructure , noise-level meter , scanning electron microscope , vibration acceleration
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International Education Corporation, Ryskulbekova, 28, Almaty, Kazakhstan
SatbayevUniversity, Satpayev 22a, Almaty, 050013, Kazakhstan
International Education Corporation
SatbayevUniversity
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