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Continuous Casting of Alloys with Enhanced Properties

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Manufacturing Processes and Systems".

Deadline for manuscript submissions: closed (31 January 2022) | Viewed by 4437

Special Issue Editor


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Guest Editor
Faculty of Mathematics and Physics, Charles University, Ke Karlovu 5, Praha 2, Czech Republic
Interests: electron microscopy; resistometry; phase transformations; mechanical properties of materials; intermetallic compounds; aluminum alloys; thin layers; nanomaterials

Special Issue Information

Dear Colleagues,

A combination of unconventional alloys and new casting and forming methods could improve material properties and lower financial costs and environmental burden in metallurgy. Established technologies should be modified in order to fulfill new demands on formability, hardness, high temperature resistance, corrosion properties, and other characteristics of the material. Continuous casting methods are good candidates with a high potential for an industrial production of semifinished billets, rods, slabs or strips for a further refinement. They provide relatively high solidification rates, resulting in a microstructure refinement. High solid solution supersaturation, which is substantially higher than in materials obtained by more common conventional casting methods, enables casting of alloys with a nonstandard composition, enhancing the precipitation potential. Due to a moderate plastic reduction during continuous casting, the materials possess a crystallographic texture intensity that is much lower compared to conventionally cast and multipass formed ones. On the other hand, inhomogeneity such as band structures and central segregations can be found in continuously cast alloys. Therefore, in order to fully exploit their potential, such materials should be subjected to several enhanced processing steps. These could include special heat treatments, enhanced mechanical processing, revolutionary composition of alloys, manufacturing of heterogeneous structures by diffusion bonding during continuous cladding or a combination of several abovementioned methods.

The aim of this Special Issue is to show the latest progress in the development of continuously cast metallic materials with an accent on uncommon compositions and post-processing resulting in a considerable enhancement of materials properties.

Prof. Dr. Miroslav Cieslar
Guest Editor

Manuscript Submission Information

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Keywords

  • continuous casting
  • metallic materials
  • microstructure
  • thermomechanical treatment

Published Papers (2 papers)

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11 pages, 9478 KiB  
Article
Intermetallic Phases Identification and Diffusion Simulation in Twin-Roll Cast Al-Fe Clad Sheet
by Barbora Křivská, Michaela Šlapáková, Jozef Veselý, Martin Kihoulou, Klaudia Fekete, Peter Minárik, Rostislav Králík, Olexandr Grydin, Mykhailo Stolbchenko and Mirko Schaper
Materials 2021, 14(24), 7771; https://0-doi-org.brum.beds.ac.uk/10.3390/ma14247771 - 16 Dec 2021
Cited by 6 | Viewed by 1998
Abstract
Aluminium steel clad materials have high potential for industrial applications. Their mechanical properties are governed by an intermetallic layer, which forms upon heat treatment at the Al-Fe interface. Transmission electron microscopy was employed to identify the phases present at the interface by selective [...] Read more.
Aluminium steel clad materials have high potential for industrial applications. Their mechanical properties are governed by an intermetallic layer, which forms upon heat treatment at the Al-Fe interface. Transmission electron microscopy was employed to identify the phases present at the interface by selective area electron diffraction and energy dispersive spectroscopy. Three phases were identified: orthorhombic Al5Fe2, monoclinic Al13Fe4 and cubic Al19Fe4MnSi2. An effective interdiffusion coefficient dependent on concentration was determined according to the Boltzmann–Matano method. The highest value of the interdiffusion coefficient was reached at the composition of the intermetallic phases. Afterwards, the process of diffusion considering the evaluated interdiffusion coefficient was simulated using the finite element method. Results of the simulations revealed that growth of the intermetallic phases proceeds preferentially in the direction of aluminium. Full article
(This article belongs to the Special Issue Continuous Casting of Alloys with Enhanced Properties)
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9 pages, 2957 KiB  
Technical Note
Pressure-Driven Micro-Casting for Electrode Fabrication and Its Applications in Wear Grain Detections
by E Cheng, Ben Xing, Shanshan Li, Chengzhuang Yu, Junwei Li, Chunyang Wei and Cheng Cheng
Materials 2019, 12(22), 3710; https://0-doi-org.brum.beds.ac.uk/10.3390/ma12223710 - 10 Nov 2019
Cited by 4 | Viewed by 1970
Abstract
The microelectrode is an essential and vital part in microsensors that are largely used in industrial, chemical, and biological applications. To obtain desired microelectrodes in great quality, it is also of great necessity and significance to develop a robust method to fabricate the [...] Read more.
The microelectrode is an essential and vital part in microsensors that are largely used in industrial, chemical, and biological applications. To obtain desired microelectrodes in great quality, it is also of great necessity and significance to develop a robust method to fabricate the microelectrode pattern. This work developed a four-terminal differential microelectrode that aims at recognizing microparticles in fluids. This microelectrode pair consisted of a high height–width ratio microelectrode array fabricated using a pre-designed microelectrode pattern (a micro-scale channel) and melted liquid metal. The surface treatment of microelectrodes was also investigated to reveal its impacts on the continuality of melting metal and the quality of the fabricated microelectrode patterns. To evaluate the performance of micro-casting fabricated electrodes, a microfluidic device was packaged using a microelectrode layer and a flow layer. Then impedance cytometer experiments were performed using sample fluids with polymer particles in two different sizes in diameter (5 μm and 10 μm). In addition, engine oil was tested on the microelectrodes as complex samples. The number of abrasive particles in the engine oil can be collected from the developed microfluidic device for further analysis. Full article
(This article belongs to the Special Issue Continuous Casting of Alloys with Enhanced Properties)
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