ISSN 0021-3454 (print version)
ISSN 2500-0381 (online version)
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vol 67 / February, 2024
Article

DOI 10.17586/0021-3454-2020-63-5-460-466

UDC 620.178.1

Investigation of Surface Pro¬perties of Alloys Using Indentation Instruments

M. A. Skotnikova
St. Petersburg Polytechnic University, Higher School of Mechanical Engineering; Institute of Mechanical Engineering, Materials and Transport;


A. A. Popov
Peter the Great St. Petersburg Polytechnic University, Institute of Machinery, Materials and Transport;


G. V. Ivanova
Peter the Great St. Petersburg Polytechnic University, Institute of Machinery, Materials and Transport; Senior Lecturer;


G. V. Tsvetkova
St. Petersburg Polytechnic University, Higher School of Engineering;


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Abstract. Using indentation instruments, the features of elastoplastic deformation of samples made of alloys are investigated. The alloys of aluminum AMc, titanium VT23, and steels 45, HVG with FCC, HCP and BCC lattices, respectively, are studied. It is shown that when indentation depth increases, instrumental hardness (H1T), elastic modulus (Е1T), and their ratios (НIT / EIT) tend to the values of classical microhardness Нµ, Young's modulus E, and their ratio (Нµ/E). The nature of localization of plastic deformation of alloys near the surface of the indenter is analyzed. The reason for the hard workability of titanium-based alloys is determined.
Keywords: alloys of titanium, aluminum, and steel, indentation, elastic and plastic deformation

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