Vestnik I. Yakovlev Chuvach State Pedagogical University. Series: Mechanics of a limit state

Bulletin of the Yakovlev Chuvash State Pedagogical University. Series: Mechanics of Limit State


ISSN: 2073-5499    

Index catalog Press of Russia: 13109    

    Phone: (8352) 62-16-19, + 7 927 847 6016

    E-mail: predel21@mail.ru, strangcheb@mail.ru

Language:  Russian     English

Main About Us Editorial Board and Editorial Staff Abstracts and Keywords

Metadata (abstracts and keywords) for the articles in the journal

Kukudzhanov K.V., Khalikova G.R., Korznikova E.A., Chentsov A.V., Dmitriev S.V. Healing of long cracks in stainless steel 12Ch15G9ND using electric pulse treatment // Vestnik I. Yakovlev Chuvach State Pedagogical University. Series: Mechanics of a limit state . 2024. № 4(62). p. 16-39
Author(s):Kukudzhanov K.V., Khalikova G.R., Korznikova E.A., Chentsov A.V., Dmitriev S.V.
Index of UDK:539.3
DOI:10.37972/chgpu.2024.62.4.002
Title:Healing of long cracks in stainless steel 12Ch15G9ND using electric pulse treatment
Keywords:crack healing, steel, high density electric pulse.
Abstracts:It seems relevant to restore the continuity of metals and alloys by healing cracks in them with the help of strong pulses of electromagnetic field. This allows you to increase the reliability and extend the service life of materials and products made from them. Although the electric pulse effect is of great practical importance, a method has not yet been developed that would allow healing the largest volume (length) of the defect. It is especially difficult to heal long macro cracks in thin plates by welding their edges using electric pulse action. The purpose of this work is to study the possibility of selecting an electric pulse mode to solve this problem. A method is described that makes it possible to heal long microcracks in flat samples. It is a multi-stage electric pulse treatment. Thanks to this method, it was possible to heal a significant part of the long fatigue macrofracture in the steel plate. Studies of the microstructure of the samples, which were carried out in cross sections, confirmed the healing mechanism. It consists in welding the edges of the crack using molten material. In order for this to happen, the significant compressive stresses and high temperatures were simultaneously created at the crack tip during the pulse, which led to the melting of the steel. Experiments have revealed significant differences in the healing processes along the length of the macrofracture and in depth. However, the healing quality improved with increasing distance from the plate surface. In the healing area, elongated grains and a central zone with equiaxed grains can be observed along the edges of the crack.
The contact details of authors:Konstantin V. Kukudzhanov, Cand. Sci. Phys. & Math., Senior Researcher; e-mail: kconstantin@mail.ru; https://orcid.org/0000-0001-9060-2838; AuthorID: 5979 Gulnara R. Khalikova, Cand. Tech., Senior Researcher, Assoc. Prof.; e-mail: gulnara.r.khalikova@gmail.com; https://orcid.org/0000-0002-6712-8469; AuthorID: 222370 Elena A. Korznikova, Doc. Sci. Phys. & Math., professor, Leading Researcher, Assoc. Prof.; e-mail: elenaakorznikova@gmail.com; https://orcid.org/0000-0002-5975-4849; AuthorID: 158475 Chentsov Alexander Viktorovich, Cand. Sci. Phys. & Math., Senior Researcher, Assoc. Prof.; e-mail: chentsov@ipmnet.ru; https://orcid.org/0000-0003-4760-1738; AuthorID: 157206 Sergey V. Dmitriev, Doc. Tech., Professor; e-mail: dmitriev.sergey.v@gmail.com; https://orcid.org/0000-0002-6744-4445; AuthorID: 37154
Pages:16-39
Full version of article:Download


© 2015 I. Yakovlev Chuvash State Pedagogical University Bulletin. Series: Mechanics of a limit state