Authors: A.V. Ivanova, A.V. Zelenina, V.P. Gileta

Title of the article: The Influence of Ultrasonic Surface Plastic Deformation Parameters on the Surface Layer Quality of Parts Made from AMg6 Aluminum Alloy

Year: 2026, Issue: 4, Pages: 33-44

Branch of knowledge: 2.5.6. Engineering technology

Index UDK: 621.9.048.6

DOI: 0.26730/1999-4125-2026-4-33-44

Abstract: The development of the aviation and aerospace industry is impossible without improving the operational properties of aluminum alloy parts, which can be achieved by surface plastic deformation (SPD) methods, including those involving the transmission of high-frequency vibrations to the indenter. The paper presents the results of an experimental study on the influence of ultrasonic surface plastic deformation (USPD) parameters – namely static load, feed rate, and ultrasonic vibration amplitude – on the surface layer quality parameters of AMg6 aluminum alloy specimens. It has been established that ultrasonic surface plastic deformation allows reducing surface roughness Ra by up to 4 times, increasing microhardness by 31.49%, as well as increasing the relative bearing length of the profile by 2.5 times and forming a specific cellular surface topography with enhanced oil retention capacity and load-bearing capability. The technologically rational parameters ensuring both a significant reduction in roughness and an increase in microhardness are a load of 50 N and a feed rate of 0.107 mm/rev. Variation of the ultrasonic vibration amplitude within the studied range (A = 5…15 µm) has an insignificant effect on both the height roughness parameters and the surface microhardness. Moreover, the minimum amplitude value of A = 5 µm proves sufficient for smoothing the initial surface irregularities. The obtained research results allow for the well-grounded assignment of USPD parameters to improve the operational characteristics of aluminum alloy parts using AMg6 alloy as an example, and may also serve as a basis for further investigation of the influence of ultrasonic vibration amplitude on the depth of the hardened layer.

Key words: ultrasonic hardening aluminum alloys surface plastic deformation surface quality

Receiving date: 09.06.2026

Approval date: 01.09.2026

Publication date: 10.09.2026

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