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Use of Modern Materials in Technological Processes Accompanied by Frictional Heating (3rd Edition)

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Manufacturing Processes and Systems".

Deadline for manuscript submissions: 20 July 2026 | Viewed by 711

Special Issue Editors


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Guest Editor
Department of Applied Mechanics and Informatics, Faculty of Mechanical Engineering, Bialystok University of Technology (BUT), 45C Wiejska Street, 15-351 Bialystok, Poland
Interests: processing of materials by friction; frictional heating process simulation; temperature fields and thermal stress state due to friction; thermal splitting; systems of heat dynamics of friction and wear at braking; selection of friction materials for braking couples
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Guest Editor
Department of Mechanics and Applied Computer Science, Faculty of Mechanical Engineering, Bialystok University of Technology, Bialystok, Poland
Interests: mathematical modelling of frictional heating process; temperature and thermal stresses in brake discs and clutches; transient heat conduction in non-homogeneous materials
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Friction is widely used in grinding, welding, cutting, and other technological processes. Thermal phenomena accompanying friction have a decisive influence on both the course of these processes and on the quality of the result. Due to extensive industry use of alloys based on magnesium, titanium, and aluminum, as well as new marks of steel and other materials sensitive to thermal effects, the thermal processes of friction are extremely important. In particular, it is necessary to note the use of friction during braking. The frictional materials used in brake units should provide the necessary friction coefficient values and stability. The problem is that in heavy braking modes, the coefficient of friction, as well as the material properties, become thermally sensitive. In this case, one way to improve the frictional properties is using the thermal barrier coating (TBC) method.

The physical and mechanical state of the surface layers of rubbing elements is determined not only by the contact temperature, which can be measured experimentally, but by the entire space–time temperature field. Gradients of temperature and rate of change in the temperature field are the most impactful. These factors have unambiguous functional relationships with the kinematic and dynamic parameters of the friction mode, material properties, cooling intensity, and many other parameters. There is a need for comprehensive studies, using all available methods, to investigate temperature fields and resulting stress states. Reliable results can be obtained only with a reasonable combination of theory and experimentation.

We welcome submissions of original research papers, short communications, and review articles.

Prof. Dr. Aleksander Yevtushenko
Dr. Katarzyna Topczewska
Guest Editors

Manuscript Submission Information

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Keywords

  • frictional heating
  • braking, grinding, welding, cutting, drilling, etc.
  • temperature and thermal stresses
  • experimental methods and simulations
  • materials selection
  • thermal barrier coating

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Related Special Issue

Published Papers (2 papers)

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Research

22 pages, 35990 KB  
Article
Process Parameters Optimization of Rotary Friction Welding of Silicon Bronze CuSi3Fe2Zn3 Alloy Using Response Surface Methodology
by Henrique Pereira Machado, Francisco Yastami Nakamoto, Givanildo Alves dos Santos, Gilmar Ferreira Batalha, Vinicius Torres do Santos, Marcio Rodrigues da Silva and Flávia Gonçalves Lobo
Materials 2026, 19(9), 1877; https://doi.org/10.3390/ma19091877 - 2 May 2026
Viewed by 114
Abstract
This study investigates the optimization of selected process parameters in the rotary friction welding (RFW) process of CuSi3Fe2Zn3 silicon bronze alloys using Response Surface Methodology (RSM) with tensile strength as the primary response. The effects of rotation speed, [...] Read more.
This study investigates the optimization of selected process parameters in the rotary friction welding (RFW) process of CuSi3Fe2Zn3 silicon bronze alloys using Response Surface Methodology (RSM) with tensile strength as the primary response. The effects of rotation speed, friction time and friction pressure were evaluated, and the steepest ascent method was applied to determine the best parameters. The results indicated that rotation speed and friction time were the most influential parameters for enhancing tensile strength. A maximum tensile of 424 MPa was achieved under conditions of 3300 rpm, friction time of 25 s, friction pressure of 0.5 MPa, forging time of 16 s, and forging pressure of 8 MPa. However, confirmation experiments exhibited noticeable variability, indicating limitations in process repeatability. Tensile properties, hardness evaluation, microstructural characterization, and thermographic analysis were conducted to assess the quality of the welded joints. Microstructural analysis revealed recrystallized equiaxed grains in the welding center zone, consistent with severe plastic deformation, while microcracks and microvoids were observed and likely contributed for failure during tensile testing. Despite grain refinement, a reduction in microhardness was detected, suggesting the influence of thermal softening mechanisms. Thermographic analysis indicated that the average temperature at the welding center zone reached 564 °C. In conclusion, RSM proved to be a useful tool for identifying trends and guiding process optimization. The results highlight the importance of process stability and control in achieving consistent performance in RFW of copper-based alloys. Full article
24 pages, 3043 KB  
Article
Friction-Induced Thermal Effects in an FGM Layer in Contact with a Homogeneous Layer
by Katarzyna Topczewska
Materials 2026, 19(7), 1299; https://doi.org/10.3390/ma19071299 - 25 Mar 2026
Viewed by 279
Abstract
An analytical model of frictional heat transfer during the uniform sliding of two layers is proposed. One layer is composed of a functionally graded material (FGM) with a thermal conductivity coefficient that varies exponentially across its thickness, while the second layer is homogeneous, [...] Read more.
An analytical model of frictional heat transfer during the uniform sliding of two layers is proposed. One layer is composed of a functionally graded material (FGM) with a thermal conductivity coefficient that varies exponentially across its thickness, while the second layer is homogeneous, with constant thermophysical properties. The thermal problem of friction is formulated as an initial boundary value problem of heat conduction, accounting for the thermal contact conductance and convective heat exchange with the environment. An exact solution for constant friction power was obtained using the Laplace integral transform, supplemented by an asymptotic form for the initial stage of heating. Based on these analytical solutions, a comprehensive study was carried out for a frictional system comprising a ceramic–metal FGM composite in contact with a homogeneous friction material. A dimensional analysis allowed for both a qualitative and quantitative investigation into the influence of contact conductance, convective heat exchange, layer thickness and the FGM gradient parameter on the temperature evolution and distribution, as well as the time to reach the steady state. It was demonstrated that the implementation of an appropriately graded material can substantially improve thermal operating conditions by enhancing heat dissipation into the material bulk and intensifying convective cooling. Full article
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