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Characterization, Properties, and Applications of New Metallic Alloys

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Metals and Alloys".

Deadline for manuscript submissions: 20 June 2024 | Viewed by 839

Special Issue Editors


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Guest Editor
College of Materials Science and Engineering, Shandong University, Jinan 250061, China
Interests: metallic glasses; nano metallic alloys; medium/high-entropy alloys
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Department of Advanced Materials Engineering, Sejong University, Seoul 143-747, Republic of Korea
Interests: metallic glasses; medium/high-entropy alloys; nano metallic alloys
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Research on new metallic alloys has primarily focused on glassy, nanocrystalline and medium/high-entropy alloys according to order and entropy tuning techniques. Metallic glassy materials have a unique microstructure: long-range atomic disorder and short-range order. Hence, they are thermodynamically metastable, having special functional properties such as high elastic moduli and strength, high magnetization, low coercivity, and high catalytic capabilities. Nanocrystalline materials are closely related to amorphous materials in terms of processing and service conditions. Recently, besides ordering in the alloys, entropy has gained the more and more attention. Medium/high-entropy alloys have achieved increasingly superior strength and other properties as a result of research by metallurgical scientists and engineers. Their characterization, technologies, and applications have long been of interest to metallurgists, physicists, chemists, materials scientists, and engineers.

Prof. Dr. Weimin Wang
Dr. Kibuem Kim
Guest Editors

Manuscript Submission Information

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Keywords

  • metallic glasses
  • medium/high-entropy alloys
  • nano metallic alloys
  • mechanical properties
  • corrosion
  • function

Published Papers (1 paper)

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Research

19 pages, 6414 KiB  
Article
Studies on the Cooperative Influence of Cr and Mo on the Pitting Corrosion Resistance of Super Austenitic Stainless Steels
by Bingbing Li, Yuping Lang, Haitao Chen, Huapeng Qu, Hanqiu Feng, Xu Sun and Zhiling Tian
Materials 2023, 16(23), 7397; https://doi.org/10.3390/ma16237397 - 28 Nov 2023
Cited by 1 | Viewed by 668
Abstract
The effects of varying Cr and Mo concentrations on the pitting corrosion resistance of super austenitic stainless steels in Cl solutions were investigated using a combination of immersion experiments, electrochemical measurements, X-ray photoelectron spectroscopy, and first-principles computational simulations. The surface characteristics, impedance, [...] Read more.
The effects of varying Cr and Mo concentrations on the pitting corrosion resistance of super austenitic stainless steels in Cl solutions were investigated using a combination of immersion experiments, electrochemical measurements, X-ray photoelectron spectroscopy, and first-principles computational simulations. The surface characteristics, impedance, and defect concentration of the passive film were changed, and this eventually resulted in a decrease in the number of pitting pits. Due to a decrease in active sites within the passive film, a delayed beginning of pitting, and the combined effect of MoO42− inhibitors, it was discovered that an increasing Mo concentration slows the rate of pitting extension, resulting in reduced maximum pitting area and depth. Additionally, Mo increased the adsorption energy of nearby atoms, whereas Cr raised the adsorption energy of itself. Interestingly, compared with individual doping, co-doping of Cr and Mo increased work function and adsorption energy, indicating a synergistic impact in enhancing resistance to Cl corrosion. Full article
(This article belongs to the Special Issue Characterization, Properties, and Applications of New Metallic Alloys)
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