Microstructure and Properties of Metal Alloy Coatings

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

Deadline for manuscript submissions: closed (30 April 2021) | Viewed by 2785

Special Issue Editor


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Guest Editor
Department of Materials Science and Engineering, National Dong Hwa University, Hualien 97401, Taiwan
Interests: mechanical alloying; oxide dispersion strengthened alloys; high-entropy alloys; high-temperature alloys; nuclear structural materials; friction stir welding
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Special Issue Information

Dear Colleagues,

We would like to invite you to submit your work to this Special Issue on “Microstructure and Properties of Metal Alloy Coatings”. Many coating methods can be used to improve the surface performance of alloys. The mechanical properties and physical properties of coatings strongly depend on their microstructure and fabrication methods. The scope of this Special Issue includes various coating techniques applied for metallic materials, for example, laser cladding, thermal spray coating, vapor deposition, plasma-transferred arc-cladding, and mechanical alloying. The aim of this Special Issue is to present recent developments in the coatings of advanced metal alloys.

In particular, the topics of interest include, but are not limited to:

  • High-entropy alloy coatings
  • Amorphous alloy coatings
  • Refractory metal coatings
  • High-temperature coatings for superalloys
  • Oxide dispersion-strengthened (ODS) coatings

Prof. Dr. Chun-Liang Chen
Guest Editor

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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. 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

  • high-entropy alloy
  • amorphous alloy
  • refractory metal
  • superalloys
  • oxide dispersion-strengthened (ODS) alloy
  • mechanical alloying

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Published Papers (1 paper)

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Research

13 pages, 7631 KiB  
Article
Influence of V and Heat Treatment on Characteristics of WMoNbTaV Refractory High-Entropy Alloy Coatings by Mechanical Alloying
by Chun-Liang Chen and Sutrisna
Coatings 2021, 11(3), 265; https://doi.org/10.3390/coatings11030265 - 24 Feb 2021
Cited by 7 | Viewed by 2229
Abstract
Refractory high-entropy alloy (RHEA) is one of the most promising materials for use in high-temperature structural materials. In this study, the WMoNbTaV coatings on 304 stainless steel substrates has been prepared by mechanical alloying (MA). Effects of V addition and subsequent heat treatment [...] Read more.
Refractory high-entropy alloy (RHEA) is one of the most promising materials for use in high-temperature structural materials. In this study, the WMoNbTaV coatings on 304 stainless steel substrates has been prepared by mechanical alloying (MA). Effects of V addition and subsequent heat treatment on properties of the WMoNbTaV coatings were investigated. The results show that the RHEA coatings with nanocrystalline body-centered cubic (BCC) solid-solution phase were generated by the mechanical alloying process. The presence of the V element promotes a uniform microstructure and homogeneous distribution of composition in the RHEA coatings due to improving alloying efficiency, resulting in an increase of hardness. After the annealing treatment of the RHEA coatings, microstructure homogeneity was further enhanced; however, the high affinity of Ta for oxygen causes the formation of Ta-rich oxides. Annealing also removes strain hardening generated by high-energy ball milling and thus decreases the hardness of the RHEA coating and alters microstructure evolution and mechanical properties. Full article
(This article belongs to the Special Issue Microstructure and Properties of Metal Alloy Coatings)
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