Advances in High-Strength Materials Processing: Machining, Surface Integrity Management, and Operational Properties

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Materials Science and Engineering".

Deadline for manuscript submissions: 30 September 2024 | Viewed by 1050

Special Issue Editors


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Guest Editor
Institute of Mechanical Engineering, University of Zielona Gora, 4 Prof. Z. Szafrana Street, 65-516 Zielona Gora, Poland
Interests: machining of hard-to-cut materials, e.g., stainless steel, titanium and its alloys; physical phenomena of the cutting process; shaping the geometric structure of the materials surface; friction and wear behavior of materials; cooling and lubrication conditions during machining

E-Mail Website
Guest Editor
Institute of Mechanical Engineering, University of Zielona Gora, 4 Prof. Z. Szafrana Street, 65-516 Zielona Gora, Poland
Interests: machining of hard-to-cut and unconventional materials, e.g., stainless steels, titanium alloys, powder metallurgy materials; physical phenomena of the cutting process; shaping the material surface texture; wear behavior of cutting tools; friction and wear behavior of the aforementioned materials and coatings; cooling and lubrication conditions during machining; plasma and laser processing conditions

Special Issue Information

Dear Colleagues,

High-strength materials are now widespread, from medical implants to products used in aerospace, the automotive industry or marine environments. Such a wide range of applications entails the use of both steels and non-ferrous alloys, as well as unconventional materials, including ceramics, composites, multilayer alloys, etc. The main advantages of these groups of materials are their attractive structural, mechanical, thermal properties, which, in its turn, means the use of such technologies such as high-temperature thermo-mechanical processing, powder metallurgy processing, plasma or laser coating, additive manufacturing technologies, and so on. On the other hand, it is necessary to ensure the high efficiency and quality of production processes, which is not an easy task because these materials are considered to be hard to cut.

The main aims and scopes of this Special Issue are to explore the latest advancements in the following field:

  • Details of chip shaping under machining of high-strength and unconventional materials;
  • Physical phenomenon of cutting and abrasive processing;
  • Modern designs of cutting and abrasive tools;
  • The use of effective technological environments, such as near-dry cutting, minimum cooling and lubrication, high-pressure cooling, etc.;
  • The impact of cutting and abrasive processing on the machined surface texture and the surface layer integrity;
  • Development of high-performance and high-speed cutting;
  • Friction and wear behavior of the surface machined.

Dr. Kamil Leksycki
Prof. Dr. Eugene Feldshtein
Guest Editors

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Applied Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • high-strength and unconventional materials
  • work-piece and tool coatings
  • cutting and abrasive processes
  • surface texture
  • surface layer integrity
  • friction and wear behavior
  • high-performance and high-speed cutting

Published Papers (2 papers)

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Research

15 pages, 3488 KiB  
Article
Sliding Layer Formation during Tribological Contact between Expanded Graphite and Stainless Steel—A Pilot Study
by Aleksandra Rewolińska, Kamil Leksycki, Karolina Perz and Grzegorz Kinal
Appl. Sci. 2024, 14(11), 4497; https://doi.org/10.3390/app14114497 - 24 May 2024
Viewed by 161
Abstract
The sliding layer created during operation of the expanded graphite–steel combination has had a huge impact on the effectiveness of the friction process, and thus on the sustainable development of society. Knowledge of the factors determining the properties of the sliding layer will [...] Read more.
The sliding layer created during operation of the expanded graphite–steel combination has had a huge impact on the effectiveness of the friction process, and thus on the sustainable development of society. Knowledge of the factors determining the properties of the sliding layer will make it possible to reduce friction resistance in the future through the proper design and selection of sliding pairs for given applications. This paper studies the effect of the moisture content of expanded graphite on the formation of a sliding layer on a stainless steel surface. The tests were carried out in static contact for 30 s and dynamic contact for 15 and 30 min, for loads of 10, 20, and 30 N and speeds of 25 and 50 mm/s. To determine the changes in surface geometry due to material transfer, the Ra roughness value of the surface of stainless steel samples was measured. In order to realize the purpose of the work and evaluate the effect of moist rings on the resulting sliding layer, the results of the surface roughness of stainless steel samples working with dry and moist graphite rings were compiled. The obtained results show that the presence of water in the stainless steel-expanded graphite friction node affects the formation of a sliding layer. The resulting layer reduces the surface roughness of the cooperating materials and prevents their accelerated wear. After 5 min of work with the water-soaked graphite counter-sample, depending on the applied friction conditions, a reduction in the surface roughness of the stainless steel sample was achieved in the range of 11–18% compared to the initial value. After 30 min of operation, the surface roughness decreased by 3 to 25%. Pilot studies have shown that operating conditions influence the formation of a sliding layer in the stainless steel-expanded graphite tribological contact. This confirms the validity of conducting further research in this area. Full article
13 pages, 10340 KiB  
Article
High-Temperature Oxidation of the 304/6061 Welding–Brazing Joint and Its Effects on Corrosion Characteristics
by Ruilin Liu, Yunqi Liu, Hongming Liu, Yuanxing Li, Hui Chen and Zongtao Zhu
Appl. Sci. 2024, 14(7), 3131; https://doi.org/10.3390/app14073131 - 8 Apr 2024
Viewed by 521
Abstract
Laser–MIG hybrid welding–brazing was used to weld 304 stainless steel and 6061-T6 aluminum alloy with a thickness of 2 mm. The microstructure, morphology, chemical composition and corrosion behavior of the samples after high-temperature oxidation were investigated. The results reveal that the 304/6061 dissimilar [...] Read more.
Laser–MIG hybrid welding–brazing was used to weld 304 stainless steel and 6061-T6 aluminum alloy with a thickness of 2 mm. The microstructure, morphology, chemical composition and corrosion behavior of the samples after high-temperature oxidation were investigated. The results reveal that the 304/6061 dissimilar joint had a thicker intermetallic compound layer (7–8 μm) during high-temperature oxidation (HTO) treatment than the sample without HTO treatment (2–3 μm). The oxide film thickness of the 6061 side of the weld joint treated by HTO (2401 nm) increased compared to the samples (181.1 nm) without HTO treatment. Unlike other metals treated by high-temperature oxidation, the high-temperature treatment process in this paper can reduce the corrosion resistance of the base metal and dissimilar joints, and the sequence of the corrosion current density was weld (HTO) >weld>6061 (HTO) >6061>304 (HTO) >304. Full article
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