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Coatings
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Heat and Surface Treatments of Metallic Materials and Their Welded...
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Heat and Surface Treatments of Metallic Materials and Their Welded Joints

A special issue of Coatings (ISSN 2079-6412).

Deadline for manuscript submissions: closed (30 November 2022) | Viewed by 2485

Special Issue Editors

Dr. Robert Kosturek

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Guest Editor
Department of Fatigue and Machine Design, Faculty of Mechanical Engineering, Military University of Technology, 00-908 Warsaw, Poland
Interests: friction stir welding; aluminum alloys; mechanical behavior of materials; microstructure; fatigue
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Janette Brezinová

E-Mail Website
Guest Editor
Department of Technology, Materials and Computer Supported Production, Faculty of Mechanical Engineering, Technical University of Košice, Mäsiarska 74, 040 01 Košice, Slovakia
Interests: welding; surface treatment; heat treatment; surface quality assessment
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Pavlo Maruschak

E-Mail Website
Guest Editor
Department of Industrial Automation, Ternopil Ivan Puluj National Technical University, 46001 Ternopil, Ukraine
Interests: fracture mechanics; transport; surface defect detection; corrosion
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The properties of an element’s surface strongly affect its behavior during cyclic loading and operating in an aggressive environment or highly abrasive conditions. In many cases, it is the quality of a surface that determines a failure, which can be avoided by its appropriate modification. The industry of the XXI century provides a large arsenal of surface treatments, including machining, chemical treatment, thermal spraying, peening, hardfacing, and many others. Additionally, considering the metallic materials, their welded joints are often the weakest point of construction, and the battle for their quality decides a load-carrier capability of an entire structure. Their fatigue performance can be improved by post-processing, e.g., shot or laser peening, which increases mechanical properties of a surface in a heat-affected zone and generates compressive residual stress, limiting fatigue crack propagation. The aim of this Special Issue is to publish original reviews and research articles from a wide range of research fields involving heat treatment, surface treatment, and post-processing of metallic materials and their welded joints.

It is our great honor to invite you to submit a manuscript for this Special Issue that provides an excellent opportunity for those who are working within these fields, paving the way for the further advancement of technical civilization.

Dr. Robert Kosturek
Prof. Dr. Janette Brezinová
Prof. Dr. Pavlo Maruschak
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

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. Coatings is an international peer-reviewed open access monthly 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 2600 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

  • heat treatment
  • surface treatment
  • welding
  • post-processing
  • metallic materials

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Published Papers (1 paper)

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Research

14 pages, 4238 KiB  
Article
Mechanical Properties of Arc Coatings Sprayed with Cored Wires with Different Charge Compositions
by Mykhailo Student, Volodymyr Hvozdetskyi, Taras Stupnytskyi, Oleksandra Student, Pavlo Maruschak, Olegas Prentkovskis and Paulius Skačkauskas
Coatings 2022, 12(7), 925; https://doi.org/10.3390/coatings12070925 - 30 Jun 2022
Cited by 8 | Viewed by 1754
Abstract
The mechanical properties (hardness, cohesion, and residual stresses) of arc coatings designed for operation under conditions of boundary friction and corrosive-abrasive wear are analyzed. The coatings were formed by arc spraying cored wires (CW) with different charge compositions (the content of carbon, aluminum, [...] Read more.
The mechanical properties (hardness, cohesion, and residual stresses) of arc coatings designed for operation under conditions of boundary friction and corrosive-abrasive wear are analyzed. The coatings were formed by arc spraying cored wires (CW) with different charge compositions (the content of carbon, aluminum, and boron in CW charge varied). It is shown that the hardness of the coatings increases with an increase in the carbon content in them up to 1 wt. %, and then decreased due to an increase in the content of residual austenite in their structure. The level of residual stresses of the first kind in such coatings increased by four times with an increase in the carbon content to 2 wt. %. The hardness of the coatings and the level of residual tensile stresses in them also increase with a decrease in the aluminum content in them. In this case, the cohesive strength of the coatings increased due to the implementation of aluminothermic reactions in the droplets of the CW melt during their flight and crystallization on the sprayed surfaces. However, then, with an increase in the aluminum content in the coatings of more than 2 wt. %, their cohesive strength decreased. The level of residual tensile stresses in coatings with a high content of retained austenite decreased after heat treatment (tempering) of the specimens. Sometimes, after tempering, these stresses even transformed into residual compressive stresses (in particular, under using CW C1.4Cr14Ni2). At the same time, the tempering of specimens with a predominance of ferrite in the coating structure increased the level of residual tensile stresses in them, which is due to the precipitation of finely dispersed carbides or borides. It has been shown that the addition of boron-containing components (ferrochromium-boron, chromium-boron) to the composition of the CW charge leads to a significant increase in the hardness of the coatings. Thus, an increase in the boron content in coatings from 0 to 4 wt. % leads to an increase in their hardness from 320 HV to 1060 HV. However, this is accompanied by an increase in tensile residual stresses in the coatings and a decrease in their cohesive strength. Full article
(This article belongs to the Special Issue Heat and Surface Treatments of Metallic Materials and Their Welded Joints)
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