Special aspects of structure formation of a transition zone in a layer composite produced by explosion welding

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The paper presents the research on special aspects of structure formation in the transition zones of a layer metal material made of structural carbon and alloy stainless steels with an internal protector. The authors specify the order of layers arrangement. As an industrial method of producing such a material, the explosion welding technology was selected, which ensures the production of three-, four- and six-layer materials with one and two internal protectors per one explosion. The selection of optimal process parameters was carried out using computer modeling in the LS-DYNA software product. By calculation, the authors determined the main technological parameters of the process, which provide in the contact zone at each interlayer boundary the ratio of the amplitude of the generated waves to their length in the range from 0.3 to 0.5. Mechanical tests of multilayer workpieces were carried out. The shear strength of layers was from 320 to 410 MPa, the ultimate tensile strength of the main layer was from 520 to 710 MPa, the impact resistance was from 290 to 740 kJ/m2, and the bending angle under static loading was 140 degrees and higher. The authors determined the phase composition and characteristics of the crystallographic structure of transition zones of a layer metal material with an internal protector. The study identified the presence of γ-Fe with a face-centered crystal lattice, two cubic structures, one hexagonal, and one orthorhombic. On the samples with artificial pitting, the authors determined their influence on the rate of anodic dissolution of a protective layer when contacting with an aggressive environment. The study shows that the interlayer boundaries with a homogeneous structure and minimal thickness have the highest corrosion resistance.

About the authors

Andrey E. Rozen

Penza State University, Penza

Email: aerozen@bk.ru
ORCID iD: 0000-0003-3362-9617

Doctor of Sciences (Engineering), Professor, Head of Chair “Welding, Foundry Engineering, and Materials Science”

Russian Federation

Irina L. Kharina

JSC “RPA “CNIITMASH”, Moscow

Email: cniitmash@cniitmash.com
ORCID iD: 0000-0002-1847-2917

PhD (Engineering), chief researcher of the Laboratory of Corrosion Tests

Russian Federation

Andrey S. Gudenko

JSC “RPA “CNIITMASH”, Moscow

Email: andgas@gmail.com
ORCID iD: 0000-0001-6459-9516

PhD (Engineering), Head of Department of Physical and Chemical Methods of Metal Research

Russian Federation

Aleksey V. Pryshchak

Penza State University, Penza

Email: metal@pnzgu.ru
ORCID iD: 0000-0003-1770-6678

PhD (Engineering), assistant professor of Chair “Welding, Foundry Engineering, and Materials Science”

Russian Federation

Aleksandr V. Khorin

Penza State University, Penza

Author for correspondence.
Email: alexkho154@yandex.ru
ORCID iD: 0000-0001-7164-7942

PhD (Engineering), assistant professor of Chair “Control and Material Tests”

Russian Federation

Viktor M. Batrashov

Penza State University, Penza

Email: metal@pnzgu.ru
ORCID iD: 0000-0001-8475-2987

PhD (Engineering), assistant professor of Chair “Control and Material Tests”

Russian Federation

Maksim S. Guskov

Penza State University, Penza

Email: metal@pnzgu.ru
ORCID iD: 0000-0002-4143-576X

PhD (Engineering), assistant professor of Chair “Control and Material Tests”

Russian Federation

Andrey A. Rozen

Penza State University, Penza

Email: aarozen@bk.ru
ORCID iD: 0000-0002-3970-1707

postgraduate student of Chair “Welding, Foundry Engineering, and Materials Science”

Russian Federation

Dmitry V. Kozlov

Penza State University, Penza

Email: d_v_kozlov@yahoo.com
ORCID iD: 0000-0003-2501-7768

postgraduate student of Chair “Welding, Foundry Engineering, and Materials Science”

Russian Federation

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