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Advanced Research on Deformation and Phase Transformation of Metallic Materials
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Advanced Research on Deformation and Phase Transformation of Metallic Materials

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Metals and Alloys".

Deadline for manuscript submissions: closed (20 July 2024) | Viewed by 2669

Special Issue Editor

Dr. Shiyan Pan

E-Mail Website
Guest Editor
1. School of Material Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
2. Engineering Training Center, Nanjing University of Science and Technology, Nanjing 210094, China
Interests: phase transition; phase-field modeling; diffusion; rapid solidification; CALPHAD

Special Issue Information

Dear Colleagues,

This Special Issue, entitled "Advanced Research on Deformation and Phase Transformation of Metallic Materials", aims to explore the latest advancements in understanding and manipulating deformation and phase transformation processes in metallic materials. This Issue will focus on the fundamental mechanisms, experimental studies, and theoretical models that explain these phenomena. Topics of interest include, but are not limited to:

  • New insights into metal plasticity and phase changes, innovations in processing and fabrication that influence material behavior, and the implications of these transformations for the properties and applications of metallic materials.
  • In situ observation of deformation and phase transformation during metallic material forming process
  • Additive manufacturing of metallic materials.
  • Phase transition of high entropy alloy and metallic glass during preparation.
  • Phase-change materials.
  • Multi-scale simulation of deformation and phase transformation of metallic materials.
  • Application of artificial intelligence in the design and processing of metallic materials.
  • Crystal plasticity finite element modeling.

Dr. Shiyan Pan
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. Materials is an international peer-reviewed open access semimonthly 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

  • phase transition
  • deformation
  • multi-scale simulation
  • synchrotron observation
  • additive manufacturing
  • high entropy alloy
  • machine learning

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Further information on MDPI's Special Issue policies can be found here.

Published Papers (2 papers)

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Research

13 pages, 4034 KiB  
Article
Structural Changes in High-Entropy Alloys CoCrFeNi and CoCrFeMnNi, Irradiated by He Ions at a Temperature of 700 °C
by Igor Ivanov, Bauyrzhan Amanzhulov, Vladimir Uglov, Sergey Zlotski, Alisher Kurakhmedov, Mikhail Koloberdin, Asset Sapar, Yerulan Ungarbayev and Maxim Zdorovets
Materials 2024, 17(17), 4383; https://doi.org/10.3390/ma17174383 - 5 Sep 2024
Cited by 1 | Viewed by 1085
Abstract
High-entropy alloys (HEA) are promising structural materials that will successfully resist high-temperature irradiation with helium ions and radiation-induced swelling in new generations of nuclear reactors. In this paper, changes in the elemental and phase composition, surface morphology, and structure of CoCrFeNi and CoCrFeMnNi [...] Read more.
High-entropy alloys (HEA) are promising structural materials that will successfully resist high-temperature irradiation with helium ions and radiation-induced swelling in new generations of nuclear reactors. In this paper, changes in the elemental and phase composition, surface morphology, and structure of CoCrFeNi and CoCrFeMnNi HEAs irradiated with He2+ ions at a temperature of 700 °C were studied. Structural studies were mainly conducted using the X-ray diffraction method. The formation of a porous surface structure with many microchannels (open blisters) was observed. The average diameter of the blisters in CoCrFeMnNi is around 1.3 times smaller than in CoCrFeNi. It was shown that HEAs’ elemental and phase compositions are stable under high-temperature irradiation. It was revealed that, in the region of the peak of implanted helium, high-temperature irradiation leads to the growth of tensile macrostresses in CoCrFeNi by 3.6 times and the formation of compressive macrostresses (−143 MPa) in CoCrFeMnNi; microstresses in the HEAs increase by 2.4 times; and the dislocation density value increases by 4.3 and 7.5 times for CoCrFeNi and CoCrFeMnNi, respectively. The formation of compressive macrostresses and a higher value of dislocation density indicate that the CoCrFeMnNi HEA tends to have greater radiation resistance compared to CoCrFeNi. Full article
(This article belongs to the Special Issue Advanced Research on Deformation and Phase Transformation of Metallic Materials)
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18 pages, 11847 KiB  
Article
Hot Workability and Microstructure Evolution of Homogenized 2050 Al-Cu-Li Alloy during Hot Deformation
by Zhiyong Sheng, Yuanchun Huang, Yongxing Zhao, Rong Fu, Xucheng Wang, Xi Fan and Fan Wu
Materials 2024, 17(17), 4236; https://doi.org/10.3390/ma17174236 - 27 Aug 2024
Viewed by 1278
Abstract
For this article, hot compression tests were carried out on homogenized 2050 Al-Cu-Li alloys under different deformation temperatures and strain rates, and an Arrhenius-type constitutive model with strain compensation was established to accurately describe the alloy flow behavior. Furthermore, thermal processing maps were [...] Read more.
For this article, hot compression tests were carried out on homogenized 2050 Al-Cu-Li alloys under different deformation temperatures and strain rates, and an Arrhenius-type constitutive model with strain compensation was established to accurately describe the alloy flow behavior. Furthermore, thermal processing maps were created and the deformation mechanisms in different working regions were revealed by microstructural characterization. The results showed that most of the deformed grains orientated toward <101>//CD (CD: compression direction) during the hot compression process, and, together with some dynamic recovery (DRV), dynamic recrystallization (DRX) occurred. The appearance of large-scale DRX grains at low temperatures rather than in high-temperature conditions is related to the particle-stimulated nucleation mechanism, due to the dynamic precipitation that occurs during the deformation process. The hot-working diagrams with a true strain of 0.8 indicated that the high strain-rate regions C (300 °C–400 °C, 0.1–1 s−1) and D (440 °C–500 °C, 0.1–1 s−1) are unfavorable for the processing of 2050 Al-Li alloys, owing to the flow instability caused by local deformation banding, microcracks, and micro-voids. The optimum processing region was considered to be 430 °C–500 °C and 0.1 s−1–0.001 s−1, with a dissipation efficiency of more than 30%, dominated by DRV and DRX; the DRX mechanisms are DDRX and CDRX. Full article
(This article belongs to the Special Issue Advanced Research on Deformation and Phase Transformation of Metallic Materials)
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