Nosov Magnitogorsk State Technical University, Magnitogorsk, Russia

A. G. Korchunov, Dr. Eng., Prof., Head of the Dept. of Design and Operation of Metallurgical Machines and Equipment
D. V. Konstantinov, Cand. Eng., Research Sector Associate, Head of the Youth Laboratory "Laboratory of Engineering of Advanced Hardware Technologies", e-mail: const_dimon@mail.ru
E. M. Ogneva, Cand. Eng., Senior Lecturer, Dept. of Design and Operation of Metallurgical Machines and Equipment
D. G. Oleynik, Postgraduate Student, Dept. of Design and Operation of Metallurgical Machines and Equipment

Magnitogorsk Iron and Steel Works, Magnitogorsk, Russia.
S. V. Denisov, Dr. Eng., Prof., Chief Specialist for Development, Scientific and Technical Center

Steels with the TRIP effect are proposed as a prospective alternative to traditional medium- and high-carbon steels used in the production of fasteners. The metastable microstructure of TRIP steels provides an effect of intensive dynamic strengthening and high fracture toughness, which allows fasteners as structural elements to dynamically improve their mechanical properties to absorb external energy and delay fracture. The potential for the application of the develop edtechnology is extremely broad due to the significant nomenclature of fasteners in the wire and fastener industry. Using multiscale computer simulation, it is shown that preserving residual austenite in the microstructure of the final fastener made of TRIP steel allows increasing wear resistance and operational reliability of this element due to surface hardening, which is crucial for application areas with unpredictable operating conditions characterized by uncontrolled impact and impulse loads, as well as intense wear. The possibilities of flexible structure and property formation directly during the production of fasteners are also demonstrated, which opens up broad prospects for the application of TRIP steels in the development of self-adapting structural elements for objects with an increased risk of man-made threats.
This research was supported by a grant from the Russian Science Foundation (agreement No. 25-29-20042 dated May 14, 2025, https://rscf.ru/project/25-29-20042/) and financial support from the Government of the Chelyabinsk Region (Agreement No. 30-2025-002767 dated July 7, 2025).

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