Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
4.7
3.4
Journals
Coatings
Special Issues
Microstructure, Mechanical and Tribological Properties of Alloys
share announcement

Microstructure, Mechanical and Tribological Properties of Alloys

A special issue of Coatings (ISSN 2079-6412). This special issue belongs to the section "Corrosion, Wear and Erosion".

Deadline for manuscript submissions: 30 April 2024 | Viewed by 3339

Special Issue Editors

Dr. Shuiqing Liu

E-Mail Website
Guest Editor
School of Mechanical Engineering, Hebei University of Technology, Tianjin 300401, China
Interests: material/structure reliability and failure mechanism; mechanical and tribological behavior of composites; micro and nano manufacturing robots
Dr. Ru Su

E-Mail Website
Guest Editor
School of Materials Science and Engineering, Hebei University of Science and Technology, Shijiazhuang, China
Interests: deformation and damage of nickel-based superalloy and aluminum alloy materials; measurement and control of residual stress in metallic materials

Special Issue Information

Dear Colleagues,

The microstructure of a material is the key to its mechanical and wear properties. The goal of this Special Issue on Microstructure, Mechanical and Tribological Properties of Alloys is to bring together information on the latest advances, new technologies and comprehensive mechanism analysis of microstructure characterization and alloys, seeking to provide guidance and reference for further research in related fields.

Topics exploring the use of zirconium for nuclear power, composites, intermetallic compounds and functional materials will be included. Additionally, topics related to the design of advanced metals and alloys, additive/subtractive manufacturing, surface modification, material simulation and calculation, finite element modeling, machine learning, simulation and experiments of mechanical properties characterization are also included. Full papers, short communication and reviews are welcome.

We look forward to receiving your contributions!

Dr. Shuiqing Liu
Dr. Ru Su
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

  • zirconium for nuclear power
  • advanced alloys
  • additive manufacturing
  • microstructure characterization and analysis
  • strengthening and toughening mechanism
  • wear mechanism
  • solidification and casting
  • surface treatment and heat treatment
  • machine learning

Published Papers (4 papers)

Download All Papers
Order results
Result details
Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:

Research

Jump to: Review

13 pages, 3015 KiB  
Article
Theoretical Study of the Competition Mechanism of Alloying Elements in L12-(Nix1Crx2Cox3)3Al Precipitates
by Yu Liu, Lijun Wang, Juangang Zhao, Zhipeng Wang, Touwen Fan, Ruizhi Zhang, Yuanzhi Wu, Xiangjun Zhou, Jie Zhou and Pingying Tang
Coatings 2024, 14(5), 536; https://doi.org/10.3390/coatings14050536 - 26 Apr 2024
Viewed by 125
Abstract
The impact of variations in the content of single alloying element on the properties of alloy materials has been extensively discussed, but the influence of this change on the content of multiple alloying elements in the alloy materials has been disregarded, as the [...] Read more.
The impact of variations in the content of single alloying element on the properties of alloy materials has been extensively discussed, but the influence of this change on the content of multiple alloying elements in the alloy materials has been disregarded, as the performances of alloy materials should be determined by the collective influence of multiple alloying elements. To address the aforementioned issue, the present study conducted a comprehensive investigation into the impact of variations in the content of alloying elements, namely Ni, Cr, and Co, on the structural and mechanical properties of L12-(Nix1Crx2Cox3)3Al precipitates using the high-throughput first-principles calculations and the partial least squares (PLS) regression, and the competitive mechanism among these three elements was elucidated. The findings demonstrate that the same alloying element may exhibit opposite effects in both single element analysis and comprehensive multi-element analysis, for example, the effect of Ni element on elastic constant C11, and the influence of Cr element on Vickers hardness and yield strength. The reason for this is that the impact of the content of other two alloying elements is ignored in the single element analysis. Meanwhile, the Co element demonstrates a significant competitive advantage in the comparative analysis of three alloying elements for different physical properties. Therefore, the methodology proposed in this study will facilitate the elucidation of competition mechanisms among different alloy elements and offer a more robust guidance for experimental preparation. Full article
(This article belongs to the Special Issue Microstructure, Mechanical and Tribological Properties of Alloys)
►▼ Show Figures

Figure 1

11 pages, 8130 KiB  
Article
Effect of Cyclic Loading on the Surface Microstructure Evolution in the Pearlitic Rail
by Tong Shi, Jiapeng Liu, Guang Yang, Ao Liu and Fengshou Liu
Coatings 2023, 13(11), 1850; https://doi.org/10.3390/coatings13111850 - 27 Oct 2023
Viewed by 722
Abstract
The effects of cyclic loading on the surface microstructure evolution of different contact locations in a used pearlitic rail were studied. Microstructures were analyzed using Scanning Electron Microscopy (SEM). Meanwhile, grain boundaries and crystallographic orientations were explored via Electron Backscatter Diffraction (EBSD). At [...] Read more.
The effects of cyclic loading on the surface microstructure evolution of different contact locations in a used pearlitic rail were studied. Microstructures were analyzed using Scanning Electron Microscopy (SEM). Meanwhile, grain boundaries and crystallographic orientations were explored via Electron Backscatter Diffraction (EBSD). At last, wheel–rail contact probabilities and forces were calculated using rail profiles. The results indicate that the side wear region located in the gauge face was 71.5% in the high-angle grain boundaries (HAGBs) fraction, 0.88 in the Kernel Average Misorientation (KAM) value, 36% in the recrystallization (REX) fraction, and had a predominant orientation in grains. The rolling contact fatigue (RCF) region situated at the gauge corner was 66.3% in the HAGBs fraction, 0.92 in the KAM value, 33% in the REX fraction, and was mis-orientated in grains. The region located at the edge of the running band was 60.7% in the low-angle grain boundaries (LAGBs) fraction, 0.97 in the KAM value, 12% in the REX fraction, and was mis-orientated in grains. Continuous dynamic recrystallization (cDRX) took place in wear and RCF regions during the cyclic rolling contact loading, creating ultra-fine grains with a transformation from LAGBs to HAGBs, lower KAM values, and more REX. Grains oriented along [111] parallel to the vertical direction in the wear region were influenced by the dominant normal force, while grains in the RCF region were non-oriented, which was attributed to large lateral and vertical forces of similar magnitudes. Full article
(This article belongs to the Special Issue Microstructure, Mechanical and Tribological Properties of Alloys)
►▼ Show Figures

Figure 1

17 pages, 5495 KiB  
Article
The Effect of Electroplating Nickel on the Mechanical Properties of Brittle Mg-Based Bulk Metallic Glasses
by Jingyao Zhang, Jing Li, Mei Jing, Lichen Zhao, Yumin Qi, Wei Yang and Xin Wang
Coatings 2023, 13(9), 1598; https://doi.org/10.3390/coatings13091598 - 13 Sep 2023
Cited by 1 | Viewed by 944
Abstract
Magnesium-based bulk metallic glasses (BMGs) are typical intrinsic brittle lightweight BMG alloys, and their improvement in plasticity has attracted widespread attention in the field of BMGs. We used the electroplating method to modify the surface of Mg59.5Cu22.9Ag11Gd [...] Read more.
Magnesium-based bulk metallic glasses (BMGs) are typical intrinsic brittle lightweight BMG alloys, and their improvement in plasticity has attracted widespread attention in the field of BMGs. We used the electroplating method to modify the surface of Mg59.5Cu22.9Ag11Gd6.6 BMGs and investigated the geometric confinement effect of the Ni coating on the mechanical properties of the BMG. The results show that under the plating conditions of adding 1 g/L nano Al2O3 to the plating solution, adjusting the plating temperature to 50 °C, and plating time to 3 h, a smooth and dense nickel coating with a thickness of about 150 μm can be formed on the surface of the Mg-based BMG. The uniaxial compression tests showed that the average fracture strength of the BMG was increased from 565 MPa to 598 MPa by a 50 μm Ni coating, and the fluctuation range of strength was decreased from 429 MPa to 265 MPa, a reduction of 36%. The Weibull analysis showed that the Weibull modulus m was increased from 4.3 to 4.8 by the coating, and the safety stress was increased from 54 MPa to 235 MPa, indicating that electroplating nickel could improve the reliability of the Mg-based BMG alloy. However, no significant improvement of the compression plasticity was found, which indicated that improving the room temperature plasticity of brittle Mg-based BMG alloys by the geometric confinement of electroplating Ni was limited. The influence of the thickness of the Ni coating on the maximum stress level and stress distribution in the BMG samples was analyzed by ANSYS finite element simulation. It was found that when the thickness of the coating was 30% of the radius of the cylindrical compressed sample, the stress distribution caused by the Ni coating was the most uniform, and the maximum stress level was relatively reduced, which is beneficial for improving the geometric confinement effect. As a result, the Mg-based BMG sample coated with a Ni coating of 150 μm thickness exhibited ~0.3% macroscopic compressive plasticity. This is of great significance for understanding the plastic deformation mechanism of brittle BMGs improved by geometric confinement. Full article
(This article belongs to the Special Issue Microstructure, Mechanical and Tribological Properties of Alloys)
►▼ Show Figures

Figure 1

Review

Jump to: Research

23 pages, 7759 KiB  
Review
Factors Influencing Residual Stresses in Cold Expansion and Their Effects on Fatigue Life—A Review
by Ru Su, Lei Huang, Changzhou Xu, Peng He, Xiaoliang Wang, Baolin Yang, Dayong Wu, Qian Wang, Huicong Dong and Haikun Ma
Coatings 2023, 13(12), 2037; https://doi.org/10.3390/coatings13122037 - 02 Dec 2023
Viewed by 1014
Abstract
Cold expansion technology has been widely used in aviation industries as an effective method of improving the fatigue performance of fastener holes. It can improve the fatigue life several times over without adding weight, meeting the growing demand for lightweight and durable aircraft [...] Read more.
Cold expansion technology has been widely used in aviation industries as an effective method of improving the fatigue performance of fastener holes. It can improve the fatigue life several times over without adding weight, meeting the growing demand for lightweight and durable aircraft structures. In recent years, it has been extensively studied through extensive experiments and finite element simulations to analyze the residual stresses around the fastener hole. Appropriate process parameters lead to the generation of beneficial residual stresses that influence the material microstructure, thereby improving the fatigue life of the component. This paper summarized factors influencing residual stresses in cold expansion and their effects on fatigue life, and the strengthening mechanism, parameter optimization, and effect of anti-fatigue are discussed from the point of view of the residual stress and microstructure. The development of new cold expansion technologies and the research directions that can realize anti-fatigue technology efficiently are proposed. Full article
(This article belongs to the Special Issue Microstructure, Mechanical and Tribological Properties of Alloys)
►▼ Show Figures

Graphical abstract

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-4
Back to TopTop