Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
4.9
2.6
Journals
Metals
Special Issues
Mechanical Behaviors and Interfacial Segregation Phenomena in Metallic Materials: Simulation,...
share announcement

Mechanical Behaviors and Interfacial Segregation Phenomena in Metallic Materials: Simulation, Theory, and Characterization

A special issue of Metals (ISSN 2075-4701).

Deadline for manuscript submissions: closed (30 November 2024) | Viewed by 5659

Special Issue Editors

Dr. Chongze Hu

E-Mail Website
Guest Editor
Department of Aerospace Engineering and Mechanics, The University of Alabama, Tuscaloosa, AL 35406, USA
Interests: computational materials science; solid mechanics; grain boundary segregation; machine learning; interfacial phenomenon
Dr. Xin Wang

E-Mail Website
Guest Editor
Department of Metallurgical and Materials Engineering, The University of Alabama, Tuscaloosa, AL 35406, USA
Interests: (in situ) electron microscopy; materials processing and manufacturing; interfaces; small-scale mechanical testing; crystalline defects

Special Issue Information

Dear Colleagues,

Metallic materials typically consist of metal or metal alloys and may sometimes also incorporate small amounts of non-metallic elements like carbon and nitrogen. The combination of these different elements allows metallic materials to achieve desired material properties tailored for specific engineering applications. Among these properties, mechanical properties such as ductility, plasticity, and strength are particularly crucial. This is because the mechanical properties not only determine the practical range of applications for a metallic material, but also directly influence its overall performance during service, such as service life. Given the polycrystalline nature of most technically relevant metallic materials, the segregation of impurity or solute elements at both intragranular and intergranular interfaces can significantly change their mechanical behaviors, thereby alternating the overall mechanical performance of these materials. Understanding the relationship between interfacial segregation and mechanical behavior at various length scales is not only important for enriching our fundamental knowledge of interface science, but also sheds lights on the design of novel metallic materials with improved properties via interfacial segregation engineering.   

In this Special Issue, we welcome articles dealing with the use of simulation, theoretical, and experimental tools to investigate the relationships between mechanical behaviors and interfacial segregation phenomena in metallic materials. Studies on the effects of interfacial segregation on mechanical behaviors in such materials using data-driven and physics-informed modeling are highly encouraged.

Dr. Chongze Hu
Dr. Xin Wang
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. Metals 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

  • mechanical behaviors
  • interfacial segregation
  • metallic materials
  • structure-property relationship
  • crystalline defects

Benefits of Publishing in a Special Issue

  • Ease of navigation: Grouping papers by topic helps scholars navigate broad scope journals more efficiently.
  • Greater discoverability: Special Issues support the reach and impact of scientific research. Articles in Special Issues are more discoverable and cited more frequently.
  • Expansion of research network: Special Issues facilitate connections among authors, fostering scientific collaborations.
  • External promotion: Articles in Special Issues are often promoted through the journal's social media, increasing their visibility.
  • e-Book format: Special Issues with more than 10 articles can be published as dedicated e-books, ensuring wide and rapid dissemination.

Further information on MDPI's Special Issue polices can be found here.

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

16 pages, 5018 KiB  
Article
Texture Analysis of Inconel 718 with Different Modes During Single-Track Laser Surface Re-Melting
by Liuqing Yang, Tongjun Niu, Joe Stilgenbauer, Brandon Lane, Nan Li, Jordan Weaver and Youxing Chen
Metals 2025, 15(2), 107; https://doi.org/10.3390/met15020107 - 23 Jan 2025
Viewed by 463
Abstract
An in-depth understanding of the texture formation in melt pools allows for the modification of the surface layer microstructure and corresponding material properties, providing an opportunity to integrate laser surface re-melting into metal additive manufacturing. This study investigates crystallographic texture formation at different [...] Read more.
An in-depth understanding of the texture formation in melt pools allows for the modification of the surface layer microstructure and corresponding material properties, providing an opportunity to integrate laser surface re-melting into metal additive manufacturing. This study investigates crystallographic texture formation at different cooling rates in single melting tracks on the Inconel 718 (IN718) plate produced by laser surface re-melting. The cooling rate varies from 2.31 × 105 °C/s to 9.56 × 105 °C/s with the increase in scanning rates from 400 mm/s to 1200 mm/s, measured by recently developed real-time temperature monitoring of melt pools. Columnar grains are dominant, with distinct crystallographic textures forming in the melt pools. At a slower scanning speed, the keyhole mode shows three different textures forming at different depths (crystallographically layered structure), while, at a faster scanning speed, the conduction mode shows only random grain orientation. There are no pores/voids detected, and the columnar grain morphology and columnar grain width (8.6 μm to 12.4 μm) follow the analysis framework in terms of thermal gradient and solidification rate analysis. This implies that laser surface re-melting provides the potential to modify the surface structure from a random grain orientation to a crystallographically layered structure. Full article
(This article belongs to the Special Issue Mechanical Behaviors and Interfacial Segregation Phenomena in Metallic Materials: Simulation, Theory, and Characterization)
►▼ Show Figures

Figure 1

22 pages, 6423 KiB  
Article
Investigation of the Solid Solution Hardening Mechanism of Low-Alloyed Copper–Scandium Alloys
by Ramona Henle, Simon Kött, Norbert Jost, Gerrit Nandi, Julia Dölling, Andreas Zilly and Ulrich Prahl
Metals 2024, 14(7), 831; https://doi.org/10.3390/met14070831 - 20 Jul 2024
Cited by 1 | Viewed by 3045
Abstract
The addition of alloying elements is a crucial factor in improving the mechanical properties of pure copper, particularly in terms of enhancing its yield strength and hardness. This study examines the influence of scandium additions (up to 0.27 wt.%) on low-alloyed copper. Following [...] Read more.
The addition of alloying elements is a crucial factor in improving the mechanical properties of pure copper, particularly in terms of enhancing its yield strength and hardness. This study examines the influence of scandium additions (up to 0.27 wt.%) on low-alloyed copper. Following the casting and solution-annealing processes, the alloys were quenched in water to maintain a supersaturated state. The mechanical properties were evaluated by tensile tests to measure the yield strength and the dynamic resonance method to determine the modulus of rigidity. Additionally, X-ray diffraction was utilized to analyze changes in lattice parameters, elucidating the structural modifications induced by scandium. This study dissects the parelastic and dielastic effects underlying the solid solution hardening mechanism, providing insights into how scandium alters copper’s mechanical properties. The findings align with the solid solution hardening theories proposed by Fleischer and Labusch, providing a comprehensive understanding of the observed phenomena. Full article
(This article belongs to the Special Issue Mechanical Behaviors and Interfacial Segregation Phenomena in Metallic Materials: Simulation, Theory, and Characterization)
►▼ Show Figures

Figure 1

15 pages, 7256 KiB  
Article
Precipitation Behavior and Strengthening–Toughening Mechanism of Nb Micro-Alloyed Direct-Quenched and Tempered 1000 MPa Grade High-Strength Hydropower Steel
by Zhongde Pan, Enmao Wang and Huibin Wu
Metals 2024, 14(7), 794; https://doi.org/10.3390/met14070794 - 8 Jul 2024
Viewed by 885
Abstract
Faced with the rapid development of large-scale pumped-storage power stations, the trade-off between the strength and toughness of hydropower steels in extreme environments has been limiting their application. The effects of Nb micro-alloying and direct quenching and tempering processes on the strengthening–toughening mechanism [...] Read more.
Faced with the rapid development of large-scale pumped-storage power stations, the trade-off between the strength and toughness of hydropower steels in extreme environments has been limiting their application. The effects of Nb micro-alloying and direct quenching and tempering processes on the strengthening–toughening mechanism of 1000 MPa grade high-strength hydropower steel are studied in this paper, and the precipitation behavior of Nb is discussed. The results showed that only the 0.025Nb steel using the DQT process achieved a cryogenic impact energy of more than 100 J at −60 °C. Under the DQT process, a large number of deformation bands and dislocations were retained, refining the prior austenite grains and providing more nucleation sites for the precipitation of NbC during the cooling process. The DQT process has a more obvious local strain concentration, mainly focusing on the refined lath boundary, which indicates that the refinement of the microstructure also promotes the stacking of dislocations. The improvement in fine grain strengthening and dislocation strengthening by the DQT process jointly led to an increase in strength, resulting in a better combination of strength and toughness. Full article
(This article belongs to the Special Issue Mechanical Behaviors and Interfacial Segregation Phenomena in Metallic Materials: Simulation, Theory, and Characterization)
►▼ Show Figures

Figure 1

Review

Jump to: Research

30 pages, 6469 KiB  
Review
Elemental Segregation and Solute Effects on Mechanical Properties and Processing of Vanadium Alloys: A Review
by Tianjiao Lei, Chongze Hu, Qiaofu Zhang and Xin Wang
Metals 2025, 15(1), 96; https://doi.org/10.3390/met15010096 - 20 Jan 2025
Viewed by 677
Abstract
Vanadium (V) alloys, such as V-Cr, V-Ti, and V-Cr-Ti alloys, are promising candidates for structural components in fusion energy systems because of their low activation, excellent radiation resistance, good compatibility with liquid lithium, and high ductility. Despite these advantages, the limited high-temperature strength [...] Read more.
Vanadium (V) alloys, such as V-Cr, V-Ti, and V-Cr-Ti alloys, are promising candidates for structural components in fusion energy systems because of their low activation, excellent radiation resistance, good compatibility with liquid lithium, and high ductility. Despite these advantages, the limited high-temperature strength and poor creep performances of V alloys have constrained their operating temperature range, challenging the application of these materials over the past few decades. The mechanical behavior is strongly dependent on microstructural features, including precipitates, intergranular and intragranular boundaries, dislocations, and point defects. At the same time, these features serve as preferable sites for solute or impurity atoms to segregate. The elemental segregation alters the local chemistry and stability of these defects, influencing microstructural evolutions and various materials properties that are essential for fusion energy applications. This review paper aims to provide a comprehensive overview of experimental and computational studies on elemental segregation and solute/impurity effects on the mechanical behaviors and microstructural evolution in V alloys. The conventional and advanced manufacturing processes of V alloys will be also discussed. Finally, this review will provide a concise perspective on the potential research directions of V alloys for future fusion reaction applications. Full article
(This article belongs to the Special Issue Mechanical Behaviors and Interfacial Segregation Phenomena in Metallic Materials: Simulation, Theory, and Characterization)
►▼ Show Figures

Figure 1

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