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Special Issue Editor

Prof. Dr. Angelo Fernando Padilha

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Guest Editor

Department of Metallurgical and Materials Engineering, University of São Paulo - USP, São Paulo, SP 05508-030, Brazil
Interests: phase transformations; recovery, recrystallization and grain growth; stainless steels; maraging steels; aluminum alloys; refractory metals and alloys; nuclear materials

Special Issue Information

Dear Colleagues,

The production of metallic materials is impressive not only by the quantity produced (more than 1 billion tons/year) but also by its diversity (hundreds of thousands of different materials). About 90% of the production of metals and alloys are mechanically worked (wrought), using several processes such as forging, rolling, extrusion and drawing, and undergo recrystallization at least once. The knowledge of the phenomena concerning work hardening, recovery, recrystallization and grain growth is of fundamental importance not only to correctly process these materials but also to control their microstructure and optimize their properties. The enhancement of the experimental techniques provided researchers with more powerful tools for the study of recrystallization and related phenomena.

The Metals Special Issue, entitled “Research Related to Recrystallization, Grain Growth and Textures of Metallic Materials”, will provide a platform for presenting the latest experimental and theoretical results on the work-hardened state, nucleation of recrystallization, growth of recrystallized regions, grain growth and secondary recrystallization, driving forces and dragging forces, recovery, recrystallization and grain growth kinetics, effects of impurities and alloying elements on recrystallization and grain growth, competition between recovery and recrystallization, recovery and recrystallization during deformation, crystallographic textures resulting from plastic deformation and annealing, experimental techniques used in the study of recrystallization and plastic deformation and recrystallization in earth sciences and non-metallic materials.

Prof. Dr. Angelo Fernando Padilha
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

recovery
recrystallization (static, dynamic and metadynamic)
grain growth (normal and abnormal)
microstruture
texture
modelling and simulation

Published Papers (2 papers)

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Research

12 pages, 4911 KiB

Open AccessArticle

Modeling of Abnormal Grain Growth That Considers Anisotropic Grain Boundary Energies by Cellular Automaton Model

by Liyan Ye, Bizhou Mei and Liming Yu

Metals 2022, 12(10), 1717; https://doi.org/10.3390/met12101717 - 13 Oct 2022

Cited by 5 | Viewed by 1554

Abstract

A new cellular automaton (CA) model of abnormal grain growth (AGG) that considers anisotropic grain boundary energies was developed in this paper. The anisotropic grain boundary energy was expressed based on two types of grains, which correspond to two components of different crystallographic orientation in textured materials. The CA model was established by assigning different grain boundary energies and grain-growth-driven mechanisms to four types of grain boundaries formed by two types of grains. The grain boundaries formed by different kinds of grains adopted the lowest energy principle, while the grain boundaries formed by the same kind of grains adopted the curvature-driven mechanism. The morphology calculated by the CA model shows the characteristics of AGG. Then, the Johnson–Mehl–Avrami (JMA) model was fitted to predict the growth kinetics. By analyzing the fitting results, the JMA model is capable of predicting the growth kinetics of AGG. The Avrami exponent p decreases from about 1.5 to 1 with the initial number of Type II grains increasing. The investigation of the Hillert model and grain size distribution further indicates that the microstructure evolution is consistent with AGG. Therefore, the analysis of morphology and kinetics indicates that AGG can be fairly well-simulated by the present CA model. Full article

(This article belongs to the Special Issue Research Related to Recrystallization, Grain Growth and Textures of Metallic Materials)

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22 pages, 8298 KiB

Open AccessFeature PaperArticle

Texture Development in Aluminum Alloys with High Magnesium Content

by Evgenii Aryshenskii, Jurgen Hirsch, Alexander Drits, Sergey Konovalov, Vladimir Aryshenskii and Maksim Tepterev

Metals 2022, 12(5), 723; https://doi.org/10.3390/met12050723 - 24 Apr 2022

Cited by 1 | Viewed by 1977

Abstract

The evolution of texture in the AlMg₆Mn_0.7 (1565 ch) alloy throughout the entire cycle of its thermomechanical treatment has been studied. Using this alloy as an example, a new way is shown to control the texture development, which is applicable to alloys with high magnesium content. An integrated approach is applied, including optical and electron microscopy, as well as X-ray diffraction analysis, the determination of mechanical properties and texture modeling using algorithms of the crystallographic plasticity theory. All stages of the thermomechanical treatment have been studied, namely the development of the deformation structure out of the as-cast structure in the reversing hot-rolling stand, continuous hot rolling, cold rolling and final recrystallization annealing. The study showed that second phase particles are the main source of recrystallization nuclei at all stages of high temperature thermomechanical treatment. The importance of these particles increases when the Zener-Hollomon parameter increases. To obtain the maximum possible proportion of a random texture, thermomechanical processing must be carried out at high Zener-Hollomon parameters. However, the temperature should not interfere with the complete recrystallization process at the same time. After cold rolling and recrystallization annealing at temperatures equal or greater than 350 °C, a large proportion of random texture is formed, and the properties of the metal are almost isotropic. Full article

(This article belongs to the Special Issue Research Related to Recrystallization, Grain Growth and Textures of Metallic Materials)

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