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Metal Science and Physics of Metals
ArticleName Influence of reversible surface plastic deformation on changes in the grain structure of carbon steel
DOI 10.17580/chm.2023.06.09
ArticleAuthor S. A. Zaydes, Nguen Khyu Khaj

Irkutsk National Research Technical University, Irkutsk, Russia:

S. A. Zaydes, Dr. Eng., Prof. of the Dept. of Materials Science of Welding and Additive Technologies, e-mail:
Kh. Kh. Nguen, Postgraduate Student, Dept. of Materials Science, Welding and Additive Technologies, e-mail:


The article presents the results of experimental studies to determine the influence of the parameters of reverse surface plastic deformation (SPD) on the distortion of grains of carbon steel 45. To implement the proposed method of finishing and hardening processing, a device has been developed that provides reverse circular motion of the working tool. The experimental results showed that the radial interference and the reverse rotational speed of the working tool (RI) have the greatest effect on the grain structure of the surface layer of the part. An increase in the radial interference from 0.08 to 0.28 mm and a reverse rotational speed of the RI from 60 to 300 strokes/min leads to a decrease in the grain size in the longitudinal direction by 57-61 %, and in the transverse direction by 44-47%, and to an increase in the degree reduction in grain size in the longitudinal direction by 60-85%, and in the transverse direction by 35-68 %. At the same time, the amount of grain distortion increases by 1.8-2.3 times. After reverse SPD, compared with the initial grain size, their value decreases by 85 % in the longitudinal direction and by 68 % in the transverse direction, while the grain distortion increases by 7.1-8.3 times. For the formation of minimum average grain sizes in the surface layer of hardened parts in the longitudinal and transverse directions (about 5.8 and 13.1 μm, respectively), the optimal hardening modes are determined: longitudinal feed 0.08-0.10 mm/rev; workpiece rotation frequency 275-300 rpm; the value of the radial interference 0.25-0.30 mm; reverse speed RI 280-300 strokes/min; the initial installation angle of RI is 90o and the value of the angle of reverse rotation of RI is ±550 - ±60о.

keywords Reverse surface plastic deformation, two-radius roller, reverse rotation angle amplitude, reverse rotation frequency, grain structure, grain refinement, degree of distortion

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