Mesoscopic Changes in Conventional and Innovative Processing Technologies

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Additive Manufacturing".

Deadline for manuscript submissions: closed (31 May 2024) | Viewed by 5864

Special Issue Editor


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Guest Editor
Savaria Institute of Technology, Faculty of Informatics, Eötvös Loránd University, Károlyi Gáspár tér 4, 9700 Szombathely, Hungary
Interests: microstructure and texture evolution in polycrystalline materials; texture modelling during thermo-mechanical processing; materials characterization; Al alloys; electrical steels
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Special Issue Information

Dear Colleagues,

The nature of the microstructural changes involved in the production of polycrystalline metallic systems is strongly affected by the variety of technological parameters in each particular step of the thermomechanical processing chain. The mesoscopic transformations, which comprise crystalline and intracrystalline structural rearrangements, are revealed by means of a vast variety of materials characterization techniques as well as a broad spectrum of numerical methods. Both approaches enable understanding the intricate link between the microstructural features of metallic materials and their macroscopic properties and are of key importance in setting up the thermomechanical processing routes. In many instances, the performance of conventionally produced materials is delimited by the bounds of the processing sequence and cannot be further improved due to numerous technological limitations; therefore, investigation of entirely new processes which are still far away from industrial implementation is of crucial significance. It is expected that the innovative processing technologies will shed a novel light on the microstructure evolution and might reveal a potential for new processing methods.

In this Special Issue, we intend to provide a broad range of scientific contributions dealing with microstructural aspects of both conventionally and non-conventionally processed metallic materials. Contributions dealing with the tailoring of microstructural features for particular purposes are of great interest. Interpretation of microstructure and crystallographic texture evolution during production, based on both well-established and recently developed modeling approaches, is welcome.

Prof. Dr. Jurij J. Sidor
Guest Editor

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Keywords

  • advanced materials processing
  • microstructure and texture evolution
  • microstructure related properties of materials

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Published Papers (1 paper)

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Research

16 pages, 11461 KiB  
Article
Assessment of Dislocation Density by Various Techniques in Cold Rolled 1050 Aluminum Alloy
by Jurij J. Sidor, Purnima Chakravarty, János Gy. Bátorfi, Péter Nagy, Qingge Xie and Jenő Gubicza
Metals 2021, 11(10), 1571; https://doi.org/10.3390/met11101571 - 30 Sep 2021
Cited by 26 | Viewed by 4768
Abstract
This study examines the evolution of dislocation density in cold rolled 1050 Al alloy. Various techniques such as numerical approaches, indentation techniques, X-ray diffraction line profile analysis, and electron backscattering diffraction were employed for the characterization of the deformed state. These methods allowed [...] Read more.
This study examines the evolution of dislocation density in cold rolled 1050 Al alloy. Various techniques such as numerical approaches, indentation techniques, X-ray diffraction line profile analysis, and electron backscattering diffraction were employed for the characterization of the deformed state. These methods allowed us to determine the nature of the evolution of the dislocation substructure during cold rolling. The investigated material was subjected to thickness reductions varying from 5% to 47%, which resulted in a continuous increase in hardness while the estimated dislocation density showed a tendency towards a less intense increase after a ~30% straining level. The numerical approaches employed, such as the Kubin–Estrin and a modified version of this model, are capable of ensuring a reasonable estimation of dislocation density at low and moderate deformation levels (~5–30%), while the discrepancy between the measured and simulated data is negligible when the material has been exposed to more severe rolling reductions. Full article
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