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Metals
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Metal Plasticity and Deformation Mechanism of Metallic Materials
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Metal Plasticity and Deformation Mechanism of Metallic Materials

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Metal Casting, Forming and Heat Treatment".

Deadline for manuscript submissions: closed (30 April 2023) | Viewed by 3748

Special Issue Editor

Prof. Dr. Lihua Wang

E-Mail Website
Guest Editor
Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China
Interests: deformation mechanisms of matrials; microstructure–property links of materials; stacking fault energy; grain boundaries; nanocrystalline; dislocation dynamics; crystal plasticity; nanoindentation

Special Issue Information

Dear colleagues，

Small-sized metallic materials have attracted extensive interest because of their applications in micro/nanoelectromechanical devices, flexible electrodes, etc. For their practical application, both high strength and high ductility are highly desired. However, although small-sized metallic materials can exhibit high strength, they always suffer from low ductility because the mechanical properties of metals, such as their strength and ductility, are directly correlated with their deformation mechanisms. Revealing the deformation mechanism of metallic materials can advance our understanding of why these small-sized metallic materials always suffer from a strength–ductility trade off, which can provide important guidance for breaking through the strength–ductility trade-off dilemma of metals.

In this Special Issue, we welcome articles that focus on the plastic deformation mechanism of metals, mechanical properties of metals, microstructure characterization, and related research fields. Papers related to the development of experimental devices or techniques, theoretical modeling, and simulation that enable revealing the deformation mechanism of metals also welcome. 

Prof. Lihua Wang
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

  • metal
  • alloy
  • deformation
  • mechanical property
  • microstructure
  • strength
  • ductility
  • fracture
  • dislocation
  • grain boundary

Published Papers (2 papers)

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Research

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11 pages, 8229 KiB  
Article
The Microstructural Degradation of Ni-Based Superalloys with Segregation under the Super-Gravity Condition
by Guo Yang, Hui Zhou, Xueqiao Li, Wenshuai Wang, Haibo Long, Shengcheng Mao, Ze Zhang and Xiaodong Han
Metals 2023, 13(2), 416; https://doi.org/10.3390/met13020416 - 17 Feb 2023
Viewed by 1612
Abstract
The Ni-based superalloy is used as the turbine blade, which is subject to the coupling effect of temperature and super-gravity during service. As the Ni-based superalloys are difficult to become homogenous after using the solid solution heat treatment, a study on morphology and [...] Read more.
The Ni-based superalloy is used as the turbine blade, which is subject to the coupling effect of temperature and super-gravity during service. As the Ni-based superalloys are difficult to become homogenous after using the solid solution heat treatment, a study on morphology and composition distribution of Ni-base superalloys with segregation during microstructural degradation is necessary. This study investigates the microstructure of the ex-service turbine blade and cast samples subjected to the high-temperature centrifugal test. The difference in the size and shape factor of the γ′ phase decreased with the stress caused by the super-gravity condition, indicating a higher magnitude of homogenization degree. The higher stress will also promote the merge of the sub-grain boundaries, leading to a lower density and higher orientational deviation of the sub-grain boundaries. Full article
(This article belongs to the Special Issue Metal Plasticity and Deformation Mechanism of Metallic Materials)
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Review

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21 pages, 8931 KiB  
Review
An Overview of Deformation Path Shapes on Equal Channel Angular Pressing
by Erhan Baysal, Oğuz Koçar, Engin Kocaman and Uğur Köklü
Metals 2022, 12(11), 1800; https://doi.org/10.3390/met12111800 - 24 Oct 2022
Cited by 3 | Viewed by 1611
Abstract
In recent years, research on ultra-fine grain materials has gained attention. While attempts have been made to improve the properties of the material, it has also become increasingly important to decrease the costs. Studies on improving material properties have revealed new production methods [...] Read more.
In recent years, research on ultra-fine grain materials has gained attention. While attempts have been made to improve the properties of the material, it has also become increasingly important to decrease the costs. Studies on improving material properties have revealed new production methods or have required the revision of existing production methods. In this direction, severe plastic deformation methods have come to the fore as a good alternative, and by improving the methods with new variations, materials with grain sizes below 1 µm have been obtained. In addition, this method positively affects the mechanical properties of the material. In this study, the Equal Channel Angular Pressing (ECAP) method, one of the severe plastic deformation methods, which has attracted great attention among researchers, was examined and the development stages of the method were investigated according to recent studies. The effective parameters in the method were examined and the effects of these parameters on the grain structure and mechanical properties of the material were discussed. Channel shapes, which are open to innovation and increase the efficiency of the ECAP method, were kept in the foreground among the prominent parameters in the ECAP process, and the results of the design changes made with new variations were examined. Full article
(This article belongs to the Special Issue Metal Plasticity and Deformation Mechanism of Metallic Materials)
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