Mechanical Properties and Corrosion Behavior of Metals After Surface Modification, 2nd Edition

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Corrosion and Protection".

Deadline for manuscript submissions: 15 December 2026 | Viewed by 846

Editors


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Guest Editor
Faculty of Transportation Engineering, Kunming University of Science and Technology, Kunming 650093, China
Interests: shot peening; residual stress; XRD analysis; microstructure characterization; coatings
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Hubei Key Laboratory of Advanced Technology for Automotive Components, School of Automotive Engineering, Wuhan University of Technology, Wuhan 430070, China
Interests: shot peening; materials processing; mechanical behavior of materials; surface properties; finite element analysis
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Surface enhancement techniques that rely exclusively on mechanical and/or non-contact energy sources, such as laser irradiation, have gained considerable traction in industrial applications. These methods improve surface properties and performance by modifying key surface attributes, including the microstructure, residual stress distribution, and surface roughness, without altering the chemical composition of the material. Techniques such as shot peening, ultrasonic shot peening, laser shock peening, water jet peening, micro-particle peening, deep rolling, surface mechanical attrition treatment (SMAT), and surface mechanical grinding treatment (SMGT) are now widely used to address the inherent material limitations—particularly insufficient hardness, wear resistance, and corrosion resistance in critical engineering components.

The fundamental mechanisms underlying these enhancements and their potential detrimental effects remain incompletely understood, despite their broad adoption. Several aspects of these processes have yet to be conclusively established, and a number of key issues remain unresolved within the research community. Moreover, while experimental investigations continue to serve as the foundation of process understanding, there is a growing need for complementary approaches in order to provide deeper insight and predictive capability, such as finite element modeling, molecular dynamics simulations, machine learning, and artificial intelligence. These tools remain underutilized and warrant further development and integration.

This Special Issue seeks to highlight recent advances in the mechanical, corrosion, wear, and fatigue behaviors of alloys treated predominantly by mechanical surface enhancement techniques. Studies that elucidate the underlying mechanisms and contribute to a more comprehensive understanding of these processes will be emphasized. Through publishing this collection, we aim to support the broader adoption and refinement of these cost-effective methods to improve the reliability and durability of components operating under demanding service conditions.

Dr. Chengxi Wang
Dr. Zhou Wang
Guest Editors

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Keywords

  • surface modification
  • surface enhancement
  • severe plastic deformation
  • additive manufacturing
  • corrosion
  • fatigue
  • wear
  • strength

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Published Papers (1 paper)

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Research

19 pages, 17345 KB  
Article
Influence of CeO2 Addition on Microstructure and Wear Behavior of Plasma Spray-Welded Stellite6/WC Composite Coatings
by Meiqiao Wu, Zhengbing Meng, Yajie Cui, Rongxin Lan, Jiangbo Deng, Dinghua Feng and Zixun He
Metals 2026, 16(4), 417; https://doi.org/10.3390/met16040417 - 10 Apr 2026
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Abstract
This study systematically investigates the influence of CeO2 content (0–0.6 wt.%) on the microstructure and mechanical properties of Stellite6/WC composite coatings fabricated by plasma spray welding. The phase composition and microstructure of the coatings were characterized using X-ray diffraction (XRD) and scanning [...] Read more.
This study systematically investigates the influence of CeO2 content (0–0.6 wt.%) on the microstructure and mechanical properties of Stellite6/WC composite coatings fabricated by plasma spray welding. The phase composition and microstructure of the coatings were characterized using X-ray diffraction (XRD) and scanning electron microscopy (SEM), while microhardness and tribological performance were evaluated using a semi-automatic Vickers microhardness tester and a ball-on-disk tribometer. The results indicate that the coating with 0.4 wt.% CeO2 exhibits the optimal combination of mechanical and tribological properties, achieving a maximum microhardness of 1107.62 HV0.3—a 50.5% improvement over the unmodified coating—and a minimum wear mass loss of 1.4 mg, corresponding to a 78.1% reduction compared to the CeO2-free counterpart. These findings demonstrate that appropriate CeO2 addition significantly enhances both the microhardness and wear resistance of Stellite6/WC coatings, offering an effective strategy to mitigate surface degradation and extend the service life of 45 steel substrates under demanding operating conditions. Full article
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