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Crystals
Special Issues
Innovative Insights into Deformation and Failure of Metallic Alloys
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Innovative Insights into Deformation and Failure of Metallic Alloys

A special issue of Crystals (ISSN 2073-4352). This special issue belongs to the section "Crystalline Metals and Alloys".

Deadline for manuscript submissions: closed (18 April 2025) | Viewed by 734

Special Issue Editors

Prof. Dr. Spyros Papaefthymiou

E-Mail Website
Guest Editor
School of Mining and Metallurgical Engineering, Division of Metallurgy and Materials Technology, Laboratory of Physical Metallurgy, National Technical University of Athens, 15780 Athens, Greece
Interests: metals; steel; aluminium; copper; heat treatment; forming; rolling; microstructure–property relationships; unconventional methods of heat treatment; ultrafast annealing
Special Issues, Collections and Topics in MDPI journals
Dr. Vasilis Karamitros

E-Mail Website
Guest Editor Assistant
School of Aeronautics and Astronautics, College of Engineering, Purdue University, West Lafayette, IN 47907, USA
Interests: microstructure-sensitive crack growth; short crack growth; crack initiation; fatigue failure; Ni-based alloy

Special Issue Information

Dear Colleagues,

The escalating demand for engineering alloys capable of withstanding extreme loading and environmental conditions necessitates a comprehensive study of deformation, damage, and fatigue mechanisms. This collection delves into the intricate phenomena of deformation, damage, and fatigue in metallic alloys, encompassing wrought, additively manufactured, and high-entropy alloys (HEAs). The scope spans experimental investigations and innovative modeling techniques, addressing both macroscopic operational scales and microscopic local microstructures. Emphasis is placed on elucidating the mechanisms underpinning deformation and failure, thereby advancing our understanding of material behavior under various loading conditions. Contributions are solicited to explore the interplay between microstructural characteristics and mechanical performance, offering insights into the development of more resilient and durable metallic systems. This compendium aims to foster a comprehensive discourse on the latest advancements in the field, promoting the integration of experimental and computational methodologies to enhance predictive capabilities and material design.

Prof. Dr. Spyros Papaefthymiou
Guest Editor

Dr. Vasilis Karamitros
Guest Editor Assistant

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. Crystals 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 2100 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

  • high-entropy alloys (HEAs)
  • additively manufactured alloys
  • microstructural characteristics
  • predictive modeling
  • extreme loading conditions

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Published Papers (1 paper)

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Research

15 pages, 6477 KiB  
Article
A Metallurgically Informed Multiscale Integrated Computational Framework for Metal Forming Processes
by Vasilis Loukadakis and Spyros Papaefthymiou
Crystals 2025, 15(5), 399; https://doi.org/10.3390/cryst15050399 - 24 Apr 2025
Viewed by 481
Abstract
: Predicting the mechanical response of industrial alloys is crucial for optimizing manufacturing processes and improving material performance. Traditional, solely experimental approaches, though effective, are inefficient as they are resource-intensive, requiring extensive laboratory testing and the iterative calibration of processing conditions. These costs [...] Read more.
: Predicting the mechanical response of industrial alloys is crucial for optimizing manufacturing processes and improving material performance. Traditional, solely experimental approaches, though effective, are inefficient as they are resource-intensive, requiring extensive laboratory testing and the iterative calibration of processing conditions. These costs can be avoided through computational/virtual experiments based on a multiscale hierarchical framework that integrates macroscopic approaches, mesoscale modelling as well as atomic level and advanced thermodynamical simulations to study and predict the mechanical response of metallic systems. In the context of this work, a framework for studying the effect of forming on metallic materials is proposed, applied, and validated on the hot extrusion of AA6063. Coupling thermodynamic simulations (including Phase Field) results with literature data establishes a microstructurally accurate representative volume element (RVE) design. This way, the phase fraction and the grain size of the RVE are determined by thermodynamic simulations (ThermoCalc, MICRESS), which can be validated via microstructure characterization. It is known that the mechanical properties of the individual phases affect the macroscopical properties of the material. Using atomic level simulations (i.e., molecular dynamics), the dislocation density of the material is calculated and utilized as an input for a Crystal Plasticity Fast Fourier Transformation simulation. This iterative process can be applied to match all stages of manufacturing processes. The hierarchical and systematic integration of these computational methodologies enables a rigorous analysis of the effect that processing parameters have on the microstructure. This work contributes to the broader effort of creating experiment-free workflows for designing materials and processes by leveraging a multiscale modeling approach. Coupled with experimental data, the predictive accuracy of the mechanical behavior can be further enhanced. Full article
(This article belongs to the Special Issue Innovative Insights into Deformation and Failure of Metallic Alloys)
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