Surface Modification of Advanced Metallic Materials

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Metal Casting, Forming and Heat Treatment".

Deadline for manuscript submissions: closed (31 March 2023) | Viewed by 1915

Special Issue Editors


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Guest Editor
Faculty of Materials and Energy, Southwest University, Chongqing 400715, China
Interests: metallic materials (ODS steels); gradient-structured materials; surface modification (steels); wear/corrosion behavior (steels); deformation/toughening mechanisms; materials characterization
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Guest Editor
College of Materials Science and Engineering, Chongqing University of Technology, Chongqing 400054, China
Interests: high-energy beam (laser/electron beam) surface modification of metal materials; high-entropy alloy coatings; structure/texture/performance of HCP metals (Ti, Zr, Mg, etc.); material characterization (EBSD, TKD, etc.)

Special Issue Information

Dear Colleagues,

Metallic materials, such as steels, aluminum alloys, and magnesium alloys, are widely used structural materials in engineering applications, covering various fields, such as transportation, aerospace, and nuclear power/hydropower plants. Usually, it is difficult for most metals and their alloys to achieve high toughness with good corrosion resistance or high toughness with high wear resistance. Surface modification is regarded as one of the most effective solutions for solving this problem. The most typical case is that carburizing has successfully solved the problem of the poor wear resistance of low carbon steels, which has been used in the gear industry for hundreds of years. With the progress of society, increasingly demanding service conditions (heavy/cyclic loads, high corrosive environments, high temperatures, etc.) are challenging the future applications of metallic materials. Traditional thermal diffusion can no longer meet the requirements, so various surface modification treatments, including deposition technologies (physical, chemical or electrical), spraying technologies (thermal or plasma), and high-energy beam (laser or electron beam) treatments, have emerged. This Special Issue focuses on the application of such advanced surface modification technologies to metallic materials. Traditional thermal diffusion, such as pack-cementation, with attractive advantages of low cost and wide application, will also be considered in this Special Issue.

Prof. Dr. Ning Guo
Prof. Dr. Linjiang Chai
Guest Editors

Manuscript Submission Information

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Keywords

  • steel
  • surface modification
  • deposition (physical, chemical or electrical)
  • spraying (thermal or plasma)
  • pulsed laser
  • pulse electron beam
  • pack-cementation

Published Papers (1 paper)

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Research

10 pages, 2700 KiB  
Article
Microstructure and Performance of Al-Coating on AZ31 Prepared by Pack-Cementation with Different Heating Methods
by Xian Yang, Jing Liao, Jianjun Hu, Xiang Hou, Hui Li, Xule Song, Peng Jiang and Ning Guo
Metals 2022, 12(5), 809; https://doi.org/10.3390/met12050809 - 07 May 2022
Viewed by 1350
Abstract
In this study, Al-containing coatings were prepared on the surface of AZ31 magnesium alloy by pack-cementation through box-type furnace heating (BFH) and induction heating (IH) methods. Phases, microstructure, composition, and performance were characterized by X-ray diffraction technique (XRD), secondary electron imaging (SEI), backscattered [...] Read more.
In this study, Al-containing coatings were prepared on the surface of AZ31 magnesium alloy by pack-cementation through box-type furnace heating (BFH) and induction heating (IH) methods. Phases, microstructure, composition, and performance were characterized by X-ray diffraction technique (XRD), secondary electron imaging (SEI), backscattered electron imaging (BSEI), and energy dispersive spectroscopy (EDS), the Vickers hardness test and potentiodynamic polarisation test, respectively. The results show that the heating method has a significant impact on the phases, microstructure, thickness, and performance of the coatings. Both aluminized layers are relatively flat and dense, and no obvious second phase is observed. The thickness of the aluminized layer of the IH sample is much larger than that of the BFH sample because the diffusion rate of IH is greater than that of BFH. Both aluminized layers are composed of an outermost layer of β-Mg2Al3 and an inner layer of γ-Mg17Al12 near the side of the substrate. The evolution of different heating methods is discussed. The microhardness and corrosion behavior of the aluminized coatings were also investigated and discussed. The results indicate that the hardness and corrosion resistance of the IH diffusion sample is better than that of the BFH, and this is related to the content of the intermetallic compound phase. Full article
(This article belongs to the Special Issue Surface Modification of Advanced Metallic Materials)
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