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
Research Progress of Crystal in Metallic Materials
share announcement

Research Progress of Crystal in Metallic Materials

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Crystallography and Applications of Metallic Materials".

Deadline for manuscript submissions: 20 October 2025 | Viewed by 2607

Special Issue Editor

Dr. Cai Chen

E-Mail Website
Guest Editor
Sino-French Engineer School, Nanjing University of Science and Technology, Nanjing, China
Interests: crystallographic structures; crystallographic textures; FCC; BCC; HCP
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The microstructure and mechanical properties of metallic materials are fundamentally determined by their crystallographic structures and related orientations. The theoretical framework of metal crystallography serves as a cornerstone for understanding the physical and chemical properties of these materials. Over recent decades, the structure variation and characteristics of crystals have been extensively revealed to explain the properties of metallic materials. With the continuous advancement of material characterization techniques, research in metal crystallography has made significant progress, providing a solid theoretical foundation for the design and fabrication of high-performance metallic materials. Moreover, the design strategy of crystallographic structures is being increasingly recognized as a crucial method for achieving high performance in metallic materials.

Therefore, the content of this Special Issue, “Research Progress of Crystal in Metallic Materials”, focuses on the latest developments in the crystallography-related research of metallic materials. We are interested in metallic materials with various crystallographic structures, including FCC, BCC, and HCP. This Special Issue places particular emphasis on the latest characterization technologies, computational simulation methods, and theories in material crystallography. It aims to provide a dedicated platform for sharing past achievements and exploring future directions in the field of crystallography in metallic materials. We welcome relevant review articles and original research articles through experimental techniques or theoretical approaches.

Dr. Cai Chen
Guest Editor

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

  • crystallographic structures
  • crystallographic textures
  • FCC
  • BCC
  • HCP

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 policies can be found here.

Published Papers (3 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

14 pages, 5541 KiB  
Article
Dendrite Structure Refinement and Mechanical Property Improvement of a Single-Crystal Superalloy
by Hongyuan Sun, Dexin Ma, Yunxing Zhao, Jianhui Wei, Xiaoyi Gong and Zhongyuan Sun
Metals 2025, 15(3), 295; https://doi.org/10.3390/met15030295 - 7 Mar 2025
Viewed by 441
Abstract
In the present work, the effect of different casting processes on the microstructure and creep properties of the second-generation single-crystal superalloy DD419 was investigated. Under conventional production conditions and a contour-suited thermal insulation method, single-crystal rods of types A and B were fabricated, [...] Read more.
In the present work, the effect of different casting processes on the microstructure and creep properties of the second-generation single-crystal superalloy DD419 was investigated. Under conventional production conditions and a contour-suited thermal insulation method, single-crystal rods of types A and B were fabricated, respectively. In comparison to rod type A, the solidification process of rod type B featured a 1.6-fold increase in the temperature gradient and a 32% reduction in primary dendrite spacing. The γ/γ′ eutectic in the as-cast microstructure, the residual eutectic phase, and porosity after heat treatment were also significantly reduced, resulting in the improved homogeneity of the single crystal castings. Under the testing conditions of 850 °C/650 MPa and 1050 °C/190 MPa, the stress rupture life of sample B was enhanced by 25% and 5.2%, respectively, compared to sample A. Therefore, due to dendrite structure refinement, the stress rupture life of the superalloy was evidently improved, especially at medium temperatures. Full article
(This article belongs to the Special Issue Research Progress of Crystal in Metallic Materials)
►▼ Show Figures

Figure 1

18 pages, 6401 KiB  
Article
Finite Element and Machine Learning-Based Prediction of Buckling Strength in Additively Manufactured Lattice Stiffened Panels
by Saiaf Bin Rayhan, Md Mazedur Rahman, Jakiya Sultana, Szabolcs Szávai and Gyula Varga
Metals 2025, 15(1), 81; https://doi.org/10.3390/met15010081 - 17 Jan 2025
Viewed by 978
Abstract
The current research aimed to investigate the critical buckling load of a simply supported aerospace-grade stiffened panel made of additively manufactured cubic lattice unit cell arrays, namely simple cubic, face-centered cubic (FCC) and body-centered cubic (BCC) structures. Ansys Design Modeler was chosen to [...] Read more.
The current research aimed to investigate the critical buckling load of a simply supported aerospace-grade stiffened panel made of additively manufactured cubic lattice unit cell arrays, namely simple cubic, face-centered cubic (FCC) and body-centered cubic (BCC) structures. Ansys Design Modeler was chosen to design and analyze the critical buckling load of the panel, while a popular material, Ti-6Al-4V, was used as the build material. Numerical validation on both the stiffened panel and a lattice beam structure was established from multiple resources from the literature. Finally, the panels were tested against increments of a strut diameter ranging from 0.5 mm to 2 mm, which corresponds to a relative density of 6% to 78%. It was found that considering the relative density and fixed relative density, the simple cubic lattice cell outperformed the buckling results of the FCC and BCC panels. Moreover, the relationship of the parameters was found to be non-linear. Finally, the data samples collected from numerical outcomes were utilized to train four different machine learning models, namely multi-variable linear regression, polynomial regression, the random forest regressor and the K-nearest neighbor regressor. The evaluation metrics suggest that polynomial regression provides the highest accuracy among all the tested models, with the lowest mean squared error (MSE) value of 0.0001 and a perfect R2 score. The current research opens up the discussion of using cubic lattice cells as potential structures for future stiffened panels. Full article
(This article belongs to the Special Issue Research Progress of Crystal in Metallic Materials)
►▼ Show Figures

Figure 1

Review

Jump to: Research

29 pages, 18120 KiB  
Review
Mechanical Properties and Strengthening Mechanisms of FCC-Based and Refractory High-Entropy Alloys: A Review
by Shuohong She, Chengxi Wang, Ming Chen and Vincent Ji
Metals 2025, 15(3), 247; https://doi.org/10.3390/met15030247 - 26 Feb 2025
Cited by 1 | Viewed by 940
Abstract
The excellent mechanical properties of high-entropy alloys, especially under harsh service environments, have attracted increasing attention in the last decade. FCC-based and refractory high-entropy alloys (HEAs) are the most extensively used series. However, the strength of FCC-base HEAs is insufficient, although they possess [...] Read more.
The excellent mechanical properties of high-entropy alloys, especially under harsh service environments, have attracted increasing attention in the last decade. FCC-based and refractory high-entropy alloys (HEAs) are the most extensively used series. However, the strength of FCC-base HEAs is insufficient, although they possess a great ductility and fracture toughness at both room and low temperatures. With regard to the BCC-based refractory HEAs, the unsatisfactory ductility at room temperature shadows their ultrahigh strength at room and high temperatures, as well as their excellent thermal stability. In order to strike a balance between strength and toughness, strengthening mechanisms should be first clarified. Therefore, typical mechanical performance and corresponding strengthening factors are systemically summarized, including the solid solution strengthening, second phase, interface, and synergistic effects for FCC-base HEAs, along with the optimization of principal elements, construction of multi-phase, the doping of non-metallic interstitial elements, and the introduction of kink bands for refractory HEAs. Among which the design of meta-stable structures, such as chemical short-range order, and kink bands has been shown to be a promising strategy to further improve the mechanical properties of HEAs. Full article
(This article belongs to the Special Issue Research Progress of Crystal in Metallic Materials)
►▼ Show Figures

Figure 1

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-3
Back to TopTop