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Metals
Special Issues
Cross-Scale Modeling of Metallic Materials on Creep and Fatigue Performance
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Cross-Scale Modeling of Metallic Materials on Creep and Fatigue Performance

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Metal Failure Analysis".

Deadline for manuscript submissions: 31 July 2026 | Viewed by 290

Special Issue Editors

Dr. Youliang Yang

E-Mail Website
Guest Editor
Light Alloys Research Institute, Central South University, Changsha 410083, China
Interests: creep; stress relaxation; constitutive modeling; microstructural characterization
Special Issues, Collections and Topics in MDPI journals
Dr. Ziyao Ma

E-Mail Website
Guest Editor
School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
Interests: cross-scale modelling; microstructural evolution; dynamics
Prof. Dr. Lihua Zhan

E-Mail Website
Guest Editor
Light Alloys Research Institute, Central South University, Changsha 410083, China
Interests: complicate component; creep age forming; aluminum alloy
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The creep and fatigue performance of metallic materials under harsh environments such as high temperatures and high stress is a core factor determining the service life and reliability of equipment in critical sectors such as aerospace and energy power. The degradation and failure of these macroscopic properties originate from the irreversible evolution of the material's internal microstructure (e.g., dislocations, grain boundaries, precipitates) under the coupled effects of load and time. Traditional empirical or semi-empirical models have limited extrapolation capability and struggle to reveal the underlying physics or achieve accurate life prediction. Consequently, developing cross-scale modeling methods capable of bridging microscopic mechanisms and macroscopic behavior has become a forefront and core challenge in this field.

In this Special Issue, we welcome research on cross-scale modeling bridging the vast spatial and temporal scales ranging from the atomic and micro levels to the macro level. Research detailing rntegration with artificial intelligence is also of great interest.

Dr. Youliang Yang
Dr. Ziyao Ma
Prof. Dr. Lihua Zhan
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 250 words) can be sent to the Editorial Office for assessment.

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

  • cross-scale modeling
  • creep
  • fatigue
  • aging
  • dislocations
  • grain boundaries
  • precipitates

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Published Papers (1 paper)

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Research

18 pages, 4639 KB  
Article
Effects of Residual Stress on Springback in Creep Age Forming of 2219 Aluminum Alloy Double-Curvature Thin-Walled Parts
by Jiwang Yu, Lihua Zhan and Youliang Yang
Metals 2026, 16(3), 269; https://doi.org/10.3390/met16030269 - 28 Feb 2026
Viewed by 138
Abstract
Residual stresses are inevitably introduced during plate manufacturing and pre-processing (e.g., quenching and pre-stretching). However, springback prediction in creep age forming (CAF) is still frequently carried out by assuming an initially stress-free blank, which may lead to biased deformation–stress histories and tool compensation [...] Read more.
Residual stresses are inevitably introduced during plate manufacturing and pre-processing (e.g., quenching and pre-stretching). However, springback prediction in creep age forming (CAF) is still frequently carried out by assuming an initially stress-free blank, which may lead to biased deformation–stress histories and tool compensation errors, hindering high-accuracy forming. This study aimed to close this practical gap by quantifying how inherited residual stresses affected the CAF springback of AA2219 double-curvature thin-walled parts. In this study, a multi-step finite element (FE) process chain covering quenching, pre-stretching, and creep age forming (CAF) was developed to investigate the evolution of the initial residual stress field and its influence on CAF springback. Surface residual stresses after quenching and after pre-stretching were measured by X-ray diffraction (XRD) to validate the FE models. The results show that, after quenching, the through-thickness residual stress exhibits a characteristic ‘compressive at the surfaces and tensile in the core’ distribution, and pre-stretching markedly reduces the residual stress level. During CAF, although the initial residual stress difference is largely equilibrated during loading, it affects springback primarily through differences in accumulated creep deformation. Incorporating the initial residual stress field reduces the springback error bandwidth from 9.59 mm to 3.51 mm (a 63.4% reduction) under the original die configuration. Additional simulations under a modified die curvature (geometric deviation ≈ 6 mm) demonstrate that the springback reduction remains at the millimeter scale, indicating that the proposed FE framework maintains a consistent predictive improvement across different curvature conditions. This work provides a theoretical basis and practical guidance for high-precision creep age forming. Full article
(This article belongs to the Special Issue Cross-Scale Modeling of Metallic Materials on Creep and Fatigue Performance)
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