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Advances in Casting, Thermomechanical and Heat Treatment of Aluminum Alloys:...
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Advances in Casting, Thermomechanical and Heat Treatment of Aluminum Alloys: Second Edition

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 April 2024) | Viewed by 3243

Special Issue Editor

Dr. Andrey Pozdniakov

E-Mail Website
Guest Editor
Department of Physical Metallurgy of Non-Ferrous Metals, National University of Science & Technology (MISIS), Leninskiy Ave 4, Moscow, Russia
Interests: Al alloys; microstructure; phase transformation; heat treatment; mechanical properties; corrosion resistance
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Aluminum and its alloys are widely employed in automobiles, aircraft, shipbuilding and other industries due to their good combination of technological characteristics, such as being light weight and possessing excellent mechanical properties, corrosion resistance and technological properties under casting and deformation. The products fabricated from aluminum alloys are obtained via casting and thermomechanical treatment. The microstructure, phase composition that forms during casting, heat treatment, and thermomechanical treatment of the alloys define the final properties and applications of the material.

The current pace of industrial development requires materials with enhanced mechanical and technological properties, with respect to a complex combination of characteristics. The optimization of the structure and phase composition of alloys, and the search for promising alloying systems and elements for the development of new materials with enhanced operational and technological properties, is an urgent task; this must be achieved in order to expand the application of aluminum alloys and improve the level of technology.

The submission of research articles focusing on the development of prospective Al alloys, the optimization of casting and deformation technology, and the evaluation of their structure and phase composition under casting, heat and thermomechanical treatment is highly encouraged.

Dr. Andrey Pozdniakov
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

  • Al alloys
  • casting alloys
  • wrought alloys
  • casting properties
  • microstructure
  • phase composition
  • phase transformation
  • heat treatment
  • strengthening
  • mechanical properties
  • corrosion resistance

Published Papers (3 papers)

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Research

12 pages, 3340 KiB  
Article
Optimization of Flat-Rolling Parameters for Thermally Stable Alloy of Al-Cu-Mn System with Micro Additions of Si and Zr
by Alexander Koshmin, Stanislav Cherkasov, Anastasiya Fortuna, Yury Gamin and Alexander Churyumov
Metals 2023, 13(12), 2019; https://doi.org/10.3390/met13122019 - 16 Dec 2023
Viewed by 784
Abstract
The phase composition, microstructure, and mechanical properties of flat-rolled experimental Al-Cu-Mn system alloy with Si and Zr additions have been studied. The experimental results have been compared with data for the AA2219 commercial alloy pertaining to the same alloying system. Hot deformation of [...] Read more.
The phase composition, microstructure, and mechanical properties of flat-rolled experimental Al-Cu-Mn system alloy with Si and Zr additions have been studied. The experimental results have been compared with data for the AA2219 commercial alloy pertaining to the same alloying system. Hot deformation of an experimental alloy causes the precipitation of ~100 nm sized dispersoids and refinement of the eutectic phase particles. The yield strength and relative elongation of the hot-deformed experimental alloy are 255 MPa and 8.6%, respectively. Subsequent cold deformation reduces the relative elongation by 3.5% and increases the yield strength by 50 MPa, while the ultimate tensile strength does not change. After long-term 350 °C exposure, the mechanical properties of the experimental alloy remain the same as those of the as-deformed one, whereas the yield strength of the 2219 alloy decreases by 2 times and the ultimate tensile strength by 1.4 times. Comparison of these experimental results with data for the 2219 alloy and other Al-Cu-Mn system alloys cited in this work and reported elsewhere suggests that a good thermal stability of Al-2Cu-2Mn-0.4Si-0.2Zr alloy rolled stock can be achieved through treatment using the regimes designed herein. Full article
(This article belongs to the Special Issue Advances in Casting, Thermomechanical and Heat Treatment of Aluminum Alloys: Second Edition)
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15 pages, 10883 KiB  
Article
Comprehensive Analysis of Microstructure and Hot Deformation Behavior of Al-Cu-Y-Mg-Cr-Zr-Ti-Fe-Si Alloy
by Sayed M. Amer, Maria V. Glavatskikh, Ruslan Yu. Barkov, Alexander Yu. Churyumov, Irina S. Loginova, Maxim G. Khomutov and Andrey V. Pozdniakov
Metals 2023, 13(11), 1853; https://doi.org/10.3390/met13111853 - 05 Nov 2023
Viewed by 1164
Abstract
Low sensitivity to hot cracking is very important not only for casting but also for ingots of wrought alloys. Doping of Al-Cu-(Mg) alloys by eutectic forming elements provides an increasing resistance to hot cracking susceptibility, but it also leads to a decrease in [...] Read more.
Low sensitivity to hot cracking is very important not only for casting but also for ingots of wrought alloys. Doping of Al-Cu-(Mg) alloys by eutectic forming elements provides an increasing resistance to hot cracking susceptibility, but it also leads to a decrease in plasticity. The quasi-binary alloys based on an Al-Cu-REM system with an atomic ratio of Cu/REM = 4 have a high solidus temperature, narrow solidification range and fine microstructure. The detailed investigation of microstructure, precipitation and hot deformation behavior, and mechanical properties of novel Al-Cu-Y-Mg-Cr-Zr-Ti-Fe-Si alloy was performed in this study. The fine Al8Cu4Y, needle-shaped Al11Cu2Y2Si2, compact primary (Al,Ti)84Cu6.4Y4.3Cr5.3 and Q (Al8Cu2Mg8Si6) phases were identified in the as-cast microstructure. Near-spherical coarse Al3(Zr,Y) and fine Al45Cr7 precipitates with a size of 60 nm and 10 nm were formed after 3 h of solution treatment at 580 °C. S′(Al2CuMg) precipitates with an average diameter of 140 nm, thickness of 6 nm and calculated volume fraction of 0.033 strengthened 36 HV during aging at 210 °C for 3 h. Three-dimensional hot processing maps demonstrated an excellent and stable deformation behavior at 440–540 °C and strain rates of 0.01–10 s−1. The rolled sheets had a good combination of yield strength (313 MPa) and plasticity (10.8%) in the recrystallized at 580 °C, with water quenched and aged at 210 °C for a 3 h state. The main calculated effect in the yield strength was contributed by Al45Cr7 precipitates. Full article
(This article belongs to the Special Issue Advances in Casting, Thermomechanical and Heat Treatment of Aluminum Alloys: Second Edition)
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14 pages, 4746 KiB  
Article
Effect of Mechanical Alloying on the Dissolution of the Elemental Mn and Al-Mn Compound in Aluminum
by Olga A. Yakovtseva, Nadezhda B. Emelina, Andrey G. Mochugovskiy, Andrey I. Bazlov, Alexey S. Prosviryakov and Anastasia V. Mikhaylovskaya
Metals 2023, 13(10), 1765; https://doi.org/10.3390/met13101765 - 17 Oct 2023
Cited by 1 | Viewed by 925
Abstract
The grain boundary, solid solution, and precipitation strengthening mechanisms are important for controlling the mechanical properties of Al-based alloys. Due to severe plastic deformation, mechanical alloying refines grain structure to a nanoscale level which leads to a strong increase in solute content and [...] Read more.
The grain boundary, solid solution, and precipitation strengthening mechanisms are important for controlling the mechanical properties of Al-based alloys. Due to severe plastic deformation, mechanical alloying refines grain structure to a nanoscale level which leads to a strong increase in solute content and the related strengthening effect of solute atoms and secondary-phase precipitates. This study analyzed the elemental Mn and Al6Mn phase dissolution in Al during high-energy ball milling. For this purpose, XRD data, microstructure, and hardness evolutions were compared for two Al—5.2 at% Mn alloys prepared by mechanical alloying using elemental Al and Mn powders and a pre-melted master alloy. In the two-phase master alloy, containing the Al solid solution and the Al6Mn phase, the strain accumulation, grain refinement, solid solution supersaturation, and milling-induced hardening effects were facilitated. Both elemental Mn and intermetallic compound were dissolved during mechanical alloying, and the maximum solute content was near 3.1 at% Mn. A fine crystalline size of ~25 nm and the maximum Mn solute content were observed after milling of elemental powders and the master alloy for 60 h and 20 h, respectively. The microhardness of ~3 GPa corresponded to a ~3.1% solute Mn content, and the microhardness increased to ~5 GPa after long–term milling due to precipitation strengthening effect of the secondary Al6Mn phase in the master alloy. Full article
(This article belongs to the Special Issue Advances in Casting, Thermomechanical and Heat Treatment of Aluminum Alloys: Second Edition)
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