Solidification Processing of Metal Alloys under External Fields

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

Deadline for manuscript submissions: 20 May 2025 | Viewed by 1344

Special Issue Editors

Department of Petroleum Engineering, University of Wyoming, Laramie, WY 82071, USA
Interests: acoustics; ultrasound liquid phase exfoliation; carbon nanotube; Ni-base superalloy; solidification; X-ray imaging; computational fluid dynamics; synchrotron X-ray imaging; alloys

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Guest Editor
School of Mechanical Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China
Interests: titanium alloys; magnesium alloys

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Guest Editor
School of Materials and Metallurgy, Inner Mongolia University of Science & Technology, Baotou 014020, China
Interests: solidification theory; alloy design; nickel aluminum alloys; titanium aluminum alloys; electromagnetic shaping
School of Civil Aviation, Northwestern Polytechnical University, Xi’an 710072, China
Interests: composite manufacturing; damage mechanisms of materials; functional materials; mechanics of materials; environmentally friendly materials
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Department of Engineering Materials and Biomaterials, Mechanical Engineering Faculty, Silesian University of Technology, ul. Konarskiego, 18a, 44-100 Gliwice, Poland
Interests: steel; alloys; mechanical properties; mechanical properties; precipitates; microstructure; welded joints, creep; heat treatment
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Special Issue Information

Dear Colleagues,

Almost all metal alloys are manufactured via solidification processes, and the mechanical properties of the cast ingots or components, such as the strength, ductility, fatigue life, etc., are predominantly determined by the as-cast grain microstructure formed during the solidification processes. The as-cast grain microstructures also affect, to a certain degree, the grain structures formed during any subsequent thermomechanical deformation and/or heat treatment processes. In the past 30 years or so, many physical field-based methods have been investigated with the aim of developing a generic method for optimizing microstructure that is suitable for all metal alloys regardless of the chemistry. The use of external fields has become widespread in a drive for improved materials or better understanding of fundamental phenomena. Examples include the use of magnetic fields to introduce electromagnetic braking of fluid flow or to interact with inherent electric currents to drive flow in processes ranging from traditional casting to additive manufacturing. Or to use electromagnetic fields to levitate droplets of highly reactive metals to understand and measure key material properties, with comparison to experiments under microgravity conditions.

Thus, we are delighted to extend an invitation to scientists and researchers to contribute to a Special Issue of Crystals, titled “Solidification Processing of Metal Alloys under External Fields”. This Special Issue will explore the intricate relationship between solidification microstructure/structure and external fields, encompassing phenomena such as solidification under the influence of robust gravitational, acoustic, or novel electromagnetic fields. Original research articles, short summaries, communications, and comprehensive reviews are welcomed.

The potential subjects include, but are not limited to:

  • Microstructural evolution during solidification under external fields;
  • Solidification theory under external fields;
  • Ultrasonic melt processing;
  • Electromagnetic shaping;
  • Magnetic field-assisted material processing;
  • Numerical simulation of solidification process.

Dr. Ling Qin
Dr. Yanchun Zhu
Prof. Dr. Jianfei Zhang
Dr. Yang Qin
Prof. Dr. Marek Sroka
Guest Editors

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Keywords

  • solidification
  • external fields
  • material properties
  • microstructures
  • crystals
  • numerical simulation
  • alloys
  • microstructure characterization

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Published Papers (1 paper)

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Research

12 pages, 6544 KiB  
Article
Construction of a Predictive Model for Dynamic and Static Recrystallization Kinetics of Cast TC21 Titanium Alloy
by Ziliang Li, Yunpeng Chai, Ling Qin, Yanchun Zhu, Yong Niu, Jiaxin Fan and Zhenwei Yue
Crystals 2024, 14(5), 424; https://doi.org/10.3390/cryst14050424 - 29 Apr 2024
Cited by 1 | Viewed by 858
Abstract
In this study, hot compression experiments were conducted on cast TC21 titanium alloy using a Gleeble-1500D thermal simulation compression tester, and the hot-compressed specimens were heat-treated. The data obtained after analyzing the thermal compression of cast TC21 titanium alloy were analyzed to construct [...] Read more.
In this study, hot compression experiments were conducted on cast TC21 titanium alloy using a Gleeble-1500D thermal simulation compression tester, and the hot-compressed specimens were heat-treated. The data obtained after analyzing the thermal compression of cast TC21 titanium alloy were analyzed to construct a thermal machining diagram with a strain of 0.8 and to optimize the machining window. This study investigated the microstructure of the alloy after hot pressing experiments and heat treatment, applying the study of the microstructure evolution law of cast TC21 titanium alloy. The analysis of the tissue evolution law established the dynamic and static recrystallization volume fraction as a function of heat deformation parameters. The results show that the optimal processing window for cast TC21 titanium alloy is a deformation temperature in the range of 1373 K–1423 K and a strain rate of 0.1 s−1. The increase in deformation volume and deformation temperature both favor recrystallization and make the recrystallization volume fraction increase, but the increase in strain rate will inhibit the increase in the recrystallization degree to some extent. The dynamic and static recrystallization equations for the cast TC21 titanium alloy at different temperatures were constructed. The experimental measurements of recrystallization volume fraction are in good agreement with the predicted values. Full article
(This article belongs to the Special Issue Solidification Processing of Metal Alloys under External Fields)
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