High-Efficiency Processing of Metals and Alloys

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Additive Manufacturing".

Deadline for manuscript submissions: closed (31 May 2024) | Viewed by 1631

Special Issue Editors


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Guest Editor
Department of High-Efficiency Processing Technology, Moscow State University of Technology, 127055 Moscow, Russia
Interests: processing by concentrated energy flows; laser processing; electrophysical machining; heat and hardening treatment; surface finishing and coating; powder metallurgy; nanomaterials; nanocoatings and thin films; thermal spray technologies; process diagnostics and monitoring
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Guest Editor
Department of High-Efficiency Processing Technologies, Moscow State University of Technology STANKIN, Moscow, Russia
Interests: additive manufacturing; coatings; cutting ceramics; electro-physical processing; high-energy fluxes; laser processing; nanocomposites; plasma processing; sintering; thin films
Special Issues, Collections and Topics in MDPI journals

E-Mail Website1 Website2
Guest Editor
Department of High-Efficiency Processing Technologies, Moscow State University of Technology STANKIN, Moscow, Russia
Interests: additive manufacturing; electrical discharge machining; high-energy fluxes; laser processing; monitoring; thermal and chemical processes
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

High-efficiency processing of metals and alloys includes become the most relevant today technologies and techniques of processing metals and most advanced alloys, including high-performance and high-entropy ones, their fast adaptation to the most relevant production tasks for the broad field of applications, and green aspects of their implementation in the conditions of the real production. Newly developed technologies and equipment contribute to more efficient materials processing using high-energy fluxes, energy redistribution in the spot, redirection of the energy fluxes using assisting means, and efficient processing of the advanced and super-hard materials that were not possible to achieve with the traditional processing technologies using conventional production approach. Application of the high-efficiency processing technologies and their spread positively influence and accelerate the transfer to the next technological paradigm, multi-component material, and nanosystems.

The last achievements in the high-efficiency processing of metals and alloys have become a relevant topic in the most authoritative scientific journals, conferences, and other international scientific events for the previous decades.

The special issue is devoted to the most recent achievements in the high-efficiency processing of metals, the most relevant and advanced alloys.

Prof. Dr. Sergey N. Grigoriev
Dr. Marina A. Volosova
Dr. Anna A. Okunkova
Guest Editors

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Keywords

  • additive manufacturing
  • coatings
  • cutting tools
  • energy fluxes
  • electrical discharge machining
  • laser processing
  • monitoring and diagnostics
  • plasma processing
  • thermal and chemical processes
  • sintering

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Published Papers (1 paper)

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Research

23 pages, 6576 KiB  
Article
Study of Adaptation Processes in Tribofilms during Friction of Antifriction Aluminum Alloys for Journal Bearings
by Pavel Podrabinnik, Iosif Gershman, Alexander Mironov, Ekaterina Kuznetsova, Anna A. Okunkova and Sergey N. Grigoriev
Metals 2023, 13(12), 1936; https://doi.org/10.3390/met13121936 - 26 Nov 2023
Cited by 3 | Viewed by 1121
Abstract
This paper provides results on the tribological behavior of experimental Al–Sn–Pb–Si–Cu–Mg–Zn aluminum alloys and describes the adaptation phenomena that reduce wear intensity during friction with steel. The main focus is on tribofilm formation, which plays an important role in friction energy dissipation. The [...] Read more.
This paper provides results on the tribological behavior of experimental Al–Sn–Pb–Si–Cu–Mg–Zn aluminum alloys and describes the adaptation phenomena that reduce wear intensity during friction with steel. The main focus is on tribofilm formation, which plays an important role in friction energy dissipation. The alloys were tested in a rig imitating a journal-bearing shaft couple, and the friction surfaces were studied by the scanning electron microscopy, energy-dispersive analysis and X-ray photoelectron spectroscopytechniques. Based on the analysis, a conclusion on processes and tribochemical reactions was made. Compared to the initial state, eight new compounds were found on the friction surface. In the most wear-resistant alloy, magnesium precipitated from a solid solution with the subsequent oxidation. The same process was detected for zinc in the least wear-resistant alloy due to its low magnesium content. Furthermore, CuSn3 and PbS compounds, which require >600 °C temperature to compose, were found in tribofilms, indicating that the rubbing body lost thermodynamic equilibrium during friction. The revealed processes are non-spontaneous and decrease the wear intensity of the alloys, as they are accompanied by negative entropy production and dissipation of friction energy. Stepwise depth XPS analysis also showed the functional levels of the tribofilms. Full article
(This article belongs to the Special Issue High-Efficiency Processing of Metals and Alloys)
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