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Metals
Special Issues
Solidification and Crystallization of Foundry Alloys
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Solidification and Crystallization of Foundry Alloys

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Metal Casting, Forming and Heat Treatment".

Deadline for manuscript submissions: closed (30 November 2020) | Viewed by 19080

Special Issue Editor

Prof. Dr. Jan Jezierski

E-Mail Website
Guest Editor
Department of Foundry Engineering, Faculty of Mechanical Engineering, Silesian University of Technology, 7 Towarowa Street, 44-100 Gliwice, Poland
Interests: cast iron; cast steel; crystallization process; quality of castings; high pressure die casting; gating systems; automation and robotization in foundry; pneumatic conveying; wastes management
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

I invite you to submit your valuable articles to this Special Issue. Its scope is quite wide and covers all foundry issues, including casting alloys metallurgy, waste disposal, quality, and any other important area for foundry science and industrial practice. Obviously, as the title suggests, solidification and crystallization is the main topic. The issue covers all alloys: ferrous and nonferrous as well as pure metals. If you have any doubts regarding whether your topic is covered by the scope, please send me a short abstract. Feel free to invite your colleagues to send their submissions, too. Being extremely familiar with the Metals journal, I am certain this is a journal worth considering as a place for dissemination of your research results.

Prof. Dr. Jan Jezierski
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. 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

  • Solidification of metals and alloys
  • Crystallization of metals and alloys
  • Foundry engineering
  • Casing alloys metallurgy
  • Computer simulation of foundry processes
  • Ferrous and nonferrous alloys
  • Castings quality
  • Foundry wastes disposal

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

Published Papers (3 papers)

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Research

18 pages, 8847 KiB  
Article
Microstructural Characteristics of AlSi9Cu3(Fe) Alloy with High Melting Point Elements
by Tomasz Szymczak, Grzegorz Gumienny, Leszek Klimek, Marcin Goły and Tadeusz Pacyniak
Metals 2020, 10(10), 1278; https://doi.org/10.3390/met10101278 - 23 Sep 2020
Cited by 7 | Viewed by 4748
Abstract
The paper presents the results of microstructure tests of EN AC-46000 hypoeutectic Al–Si alloy with and without high-melting-point elements: chromium, molybdenum, vanadium, and tungsten. The above-mentioned elements were used individually or simultaneously in various combinations. The tested castings were made using two technologies: [...] Read more.
The paper presents the results of microstructure tests of EN AC-46000 hypoeutectic Al–Si alloy with and without high-melting-point elements: chromium, molybdenum, vanadium, and tungsten. The above-mentioned elements were used individually or simultaneously in various combinations. The tested castings were made using two technologies: shell molding and high pressure die casting (HPDC). Using X-ray diffraction and microanalysis of the chemical composition an attempt to determine the phase structure of the tested alloy was made. It has been shown that the microstructure of the base alloy consists of dendrites of α(Al) solid solution and complex eutectic mixtures: ternary α(Al) + Al15(Fe,Mn)3Si2 + β(Si) and quaternary α(Al) + Al2Cu + AlSiCuFeMgMnNi + β(Si). High-melting point elements, regardless of the combination used, attach mainly to intermetallic phases rich in Fe and form the Al15(Fe,Mn,M)3Si2 phase, where M is any high melting point element or a combination of such elements. It has been shown that the area fraction of the above-mentioned phase increases with increasing content of high melting point elements. A greater area fraction of the Al15(Fe,Mn,M)3Si2 phase in the casting from the shell mold in relation to the high pressure die casting has been also found. Full article
(This article belongs to the Special Issue Solidification and Crystallization of Foundry Alloys)
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15 pages, 13473 KiB  
Article
The Impact of Process Factors on Creating Defects, Mainly Lustrous Carbon, during the Production of Ductile Iron Using the Lost-Foam Casting (LFC) Method
by Jan Jezierski, Michał Jureczko and Rafał Dojka
Metals 2020, 10(8), 1022; https://doi.org/10.3390/met10081022 - 30 Jul 2020
Cited by 8 | Viewed by 9206
Abstract
The purpose of this paper was to analyze the process factors affecting the occurrence of lustrous carbon defects in ductile cast iron castings when using the lost-foam casting (LFC) method. This phenomenon results in creating raw surface defects, which sometimes may even lead [...] Read more.
The purpose of this paper was to analyze the process factors affecting the occurrence of lustrous carbon defects in ductile cast iron castings when using the lost-foam casting (LFC) method. This phenomenon results in creating raw surface defects, which sometimes may even lead to cast iron scrapping. A series of trial melting batches were carried out for variable process assumptions. The analysis was performed to reflect, to the greatest extent possible, real foundry production conditions. Industrial tests were performed in Odlewnia Rafamet Sp. z o.o., Kuźnia Raciborska, Poland. The polystyrene patterns created by gluing components together, used in the tests, met the requirements of the high-tech lost-foam casting (LFC) process. The performed analysis allowed the obtaining of lustrous carbon defects in test castings as well as the determination of the process parameters with the highest impact on lustrous carbon inclusions in ductile iron castings. The test results were used to eliminate the possibility of creating a defect and thus directly improve the efficiency of the lost-foam casting (LFC) process used in the foundry. Full article
(This article belongs to the Special Issue Solidification and Crystallization of Foundry Alloys)
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18 pages, 3777 KiB  
Article
Carbide to Graphite Transition Control by Thermal Analysis in Grey Cast Irons
by Elena Loredana Neacsu, Iulian Riposan, Ana Maria Cojocaru, Stelian Stan and Iuliana Stan
Metals 2020, 10(8), 993; https://doi.org/10.3390/met10080993 - 23 Jul 2020
Cited by 4 | Viewed by 4170
Abstract
The present work compared the solidification pattern of un-inoculated and inoculated hypoeutectic grey cast irons (3.7–3.8% CE), focused on carbide to graphite formation transition, by the use of an adequate experimental technique, able to measure real stable (Tst) and metastable ( [...] Read more.
The present work compared the solidification pattern of un-inoculated and inoculated hypoeutectic grey cast irons (3.7–3.8% CE), focused on carbide to graphite formation transition, by the use of an adequate experimental technique, able to measure real stable (Tst) and metastable (Tmst) eutectic temperatures. Have been used three ceramic cups for investigating thermal analysis: (i) for normal solidification; (ii) with addition of Te for Tmst measurement; (iii) with more inoculant addition for Tst measurement. As a general rule, measured values appear to be lower compared with calculated values (as chemical composition effects), with an average difference at 14.4 °C for Tst and 8.3 °C for Tmst. It is found a good relationship between the undercooling degree at the lowest eutectic temperature (ΔT1) and at the end of solidification (ΔT3), reported to measured Tmst. The free carbides formation (chill tendency) is in good relationship with the undercooling degree during the eutectic reaction, reported to measured Tmst, especially for thin and medium wall thickness castings. The real measured Tmst instead of calculated Tmst is compulsory for the thin wall castings production, very sensitive to carbides to graphite transition. In the present experimental conditions, no visible relationship appears to be between chill tendency and undercooling at the end of solidification (ΔT3). Full article
(This article belongs to the Special Issue Solidification and Crystallization of Foundry Alloys)
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