Study of stainless steel microstructure by cyclic cryogenic method
Volokitina I.E. Volokitin A.V. Zhautikov B.A. Zhumanazarova G.
25 February 2026Techno-Press
Steel and Composite Structures
2026#58Issue 4523 - 539 pp.
The production of wire with improved mechanical properties, capable of withstanding significant loads and maintaining integrity for a long time, faces certain technological limitations. Therefore, thermomechanical processing becomes the optimal solution for high-quality wire obtaining. Technology of stainless wire thermomechanical processing developed in this work consists of preliminary heat treatment-hardening at a temperature of 1050°C and traditional drawing with subsequent cryogenic cooling after each deformation cycle. A comparison of wire intermediate heating effect to room temperature between deformation cycles was also made, which did not change stainless steel wire microstructure and properties. The use of intermediate heating led to the formation of a unique gradient martensitic-austenitic microstructure in stainless steel wire. A nanostructured layer with a grain size of about 500 nm was formed on the surface. This thin, high-strength shell smoothly transitions into a zone with a gradually increasing grain size as it approaches the center of the wire. If intermediate heating to room temperature is not used between deformation cycles, then heating in the deformation zone does not occur. In this case, after three deformation cycles, the microstructure becomes martensitic throughout the volume of wire with 400 nm size grains.
drawing , martensite , microstructure , nitrogen , steel , wire
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Department of Metallurgy and Mechanical Engineering, Karaganda Industrial University, Respublika Avenue 30, Kazakhstan
Department of Metallurgy and Mechanical Engineering
10 лет помогаем публиковать статьи Международный издатель
Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026