RESEARCH OF THE RELATIONSHIP OF THE RATE OF ULTRASOUND IN METALS WITH THEIR IMPACT VISCOSITY AND HARDNESS UNDER THE CONDITIONS OF REDUCED TEMPERATURES

Autor:	Yuri I. Matveev, M. S. Anosov, A. A. Khlybov, Yuri Kabaldin, D. A. Ryabov
Rok vydání:	2020
Předmět:	Viscosity 020303 mechanical engineering & transports Materials science 0203 mechanical engineering business.industry Ultrasound 02 engineering and technology General Medicine Composite material 021001 nanoscience & nanotechnology 0210 nano-technology business
Zdroj:	Russian Journal of Water Transport. :60-67
ISSN:	2713-1866 2713-1858
DOI:	10.37890/jwt.vi65.128
Popis:	The paper presents the results of the study of the relationship between the velocity of propagation of longitudinal waves in a metal with the values ​​of impact toughness and hardness in a wide range of low temperatures. It’s been found that with a decrease of temperature, an increase of hardness, a decrease of impact toughness and an increase of the velocity of propagation of a longitudinal wave in the studied metals are observed, and the velocity of propagation of a longitudinal wave has a close correlation with the characteristics under consideration. An increase of the speed of sound with decreasing temperature, in our opinion, is explained by an increase of the thermal conductivity of metals. Thus, by the values ​​of the speed of sound propagation in metals, it is possible to predict the level of its impact toughness, as well as hardness at low temperatures, and, consequently, the tendency to brittle fracture of structures.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6927eab5095d622851fcef02a738c5da https://doi.org/10.37890/jwt.vi65.128 Zobrazit plný text záznamu