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Crystals
Special Issues
Current Status and Recent Progress on Advanced Aluminum Alloys
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Current Status and Recent Progress on Advanced Aluminum Alloys

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

Deadline for manuscript submissions: closed (29 February 2024) | Viewed by 3459

Special Issue Editors

Dr. Yue Li

E-Mail Website
Guest Editor
Max-Planck Institut für Eisenforschung GmbH, Max-Planck-Straße 1, 40237 Düsseldorf, Germany
Interests: aluminum alloys; atom probe tomography; machine learning; hot tearing; ICME
Dr. Dengshan Zhou

E-Mail Website
Guest Editor
School of Materials Science and Engineering, Northeastern University, Shenyang 110819, China
Interests: powder metallurgy; additive manufacturing; aluminum alloys; metal matrix nanocomposites
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Hailiang Yu

E-Mail Website
Guest Editor
Stake Key Laboratory of High Peformance Complex Manufacturing, Light Alloys Research Institute, Central South University, Changsha 410083, China
Interests: metals and alloys; metalforming; microstructure and properties
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Aluminum-rich metallic materials, as some of the most important structural and functional materials in modern society, are widely used in many key areas, such as food packaging, transportation, construction, aerospace, and aircraft. As such, materials scientists and metallurgists have never stopped searching for superior Al-based alloys by adjusting/tuning their compositions, imperfections and structures from the macro- to the micro-scale, and even down to the nano-scale level. With more than 100 years of continuous efforts made to develop advanced Al-based alloys, the approach to producing aluminum alloys has made great progress from traditional casting/forging/rolling to 3D printing/additive (smart) manufacturing; the design paradigm for aluminum alloys has evolved from initial “trial and error”, integrated computational materials engineering (ICME), to the state-of-the-art Materials Genome Initiative (MGI). These advances largely enhance the development of high-performance aluminum alloys, especially when encountering wide composition and processing parameter zones, heterostructures, and strength–ductility trade-offs.

This Special Issue will mainly cover the mechanical properties of Al-rich materials fabricated by different routes and their associated microstructure–strength relations after post-processing treatments. Topics such as functional properties, advanced characterization, recycling, modeling and simulation, alloy development, etc. relating to Al-rich materials are also warmly welcome as contributions to this Issue. We cordially invite you to submit your full papers, communications and reviews to present and discuss the current status and recent progress on advanced Al-rich materials.

Dr. Yue Li
Dr. Dengshan Zhou
Prof. Dr. Hailiang Yu
Guest Editors

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. Crystals 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, welding, forging, rolling, recycling and refining
  • additive manufacturing or 3D printing
  • heat treatment, phase transformations and precipitation
  • mechanical or functional behavior
  • advanced characterization
  • modeling and simulation
  • aluminum and its alloys for zero-carbon society
  • next-generational aluminum alloys

Published Papers (3 papers)

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Research

14 pages, 6044 KiB  
Article
Investigation of Hardness and Microanalysis of Sintered Aluminum-Based Supplemented Metal Matrix Machined Composites
by Muhammad Raheel Bhutta, Fouzia Gillani, Taiba Zahid, Saira Bibi and Usman Ghafoor
Crystals 2023, 13(9), 1347; https://doi.org/10.3390/cryst13091347 - 04 Sep 2023
Cited by 1 | Viewed by 712
Abstract
Aluminum metal matrix composites (AMMCs) have become increasingly ubiquitous in the fields of aerospace and automobile businesses due to their lightweight properties. Their machining is a challenging task because of the presence of supplemented particles, also called reinforcements. As the wt% of the [...] Read more.
Aluminum metal matrix composites (AMMCs) have become increasingly ubiquitous in the fields of aerospace and automobile businesses due to their lightweight properties. Their machining is a challenging task because of the presence of supplemented particles, also called reinforcements. As the wt% of the supplemented particles changes, the morphological and machining behaviors of the AMMCs change. The present work is focused on exploring the thermo-mechanical properties of AMMCs which would help in AMMC applications in the aerospace industry with a new collection of composites containing silicon carbide (SiC) and zircon/zirconium silicate (ZrSiO4) as supplements in wt% of 5%, 20%, 30%, and 40%. Uniform binary and hybrid sample pallets are prepared by powder metallurgy (PM). The said samples are sintered and then machined using wire electric discharge machining (WEDM) employing brass wire with a feed rate of 2 to 3 mm/min. Also, analysis of porosity and recast layer formation is performed via the microstructure, scanning electron microscopy (SEM), and energy dispersive spectroscopy (EDS). Some interesting and useful findings are obtained which can extend the applications of AMMCs in automobiles and the aerospace industry. The results reveal that temperature and wt% are playing their significant roles in the changes in the thermo-mechanical properties of AMMCs. Mathematical equations via regression analysis using Minitab 17 and Excel are developed for the congruence of experimental data. Analysis of Variance (ANOVA) is also performed. Hence, the most optimized relationships for the best machining output are established and presented in this proposed study. Full article
(This article belongs to the Special Issue Current Status and Recent Progress on Advanced Aluminum Alloys)
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17 pages, 18386 KiB  
Article
Towards Closed-Loop Recycling of Ceramic Particle-Reinforced Aluminium Alloys: Comparative Study of Resistance-Heating Sintered Primary and Solid-State Recycled Secondary SiCp/AlSi7Mg Composites
by Sarah Johanna Hirsch, Thomas Grund and Thomas Lampke
Crystals 2023, 13(5), 830; https://doi.org/10.3390/cryst13050830 - 17 May 2023
Cited by 2 | Viewed by 1047
Abstract
Particle-reinforced aluminium matrix composites (AMC) with a high-volume fraction of ceramic reinforcement (>30 vol.%) combine high specific strength and stiffness with good wear resistance and thermal stability, resulting in their increasing popularity in high-load applications, such as brake discs and bearings. It is [...] Read more.
Particle-reinforced aluminium matrix composites (AMC) with a high-volume fraction of ceramic reinforcement (>30 vol.%) combine high specific strength and stiffness with good wear resistance and thermal stability, resulting in their increasing popularity in high-load applications, such as brake discs and bearings. It is hence assumed that AMC will accumulate as scrap in the near future. Appropriate recycling strategies must therefore be developed to maintain AMC’s inherent properties. Melt-metallurgical recycling routes bear the danger of dissolving the ceramic reinforcement in the liquid metallic matrix and contaminating primary melts or forming intermetallic phases in secondary melts. Here, a solid-state AMC recycling route with crushing and sintering is investigated, wherein all steps are carried out below the solidification temperature of the aluminium matrix. A sintered primary AMC is mechanically converted into a particulate/powdery secondary raw AMC in coarse, medium, and milled quality (i.e., with d ≈ 7–12 mm, d ≈ 3–7 mm, and d < 300 µm) and subsequently resistance heating sintered to a secondary AMC under a variation of the sintering pressure. The two AMC generations are analysed and discussed regarding their microstructure and mechanical properties. Since the secondary AMC show reduced the mechanical strength, the fracture surfaces are analysed, revealing iron contaminations from the mechanical processing. Full article
(This article belongs to the Special Issue Current Status and Recent Progress on Advanced Aluminum Alloys)
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16 pages, 90266 KiB  
Article
Production of LM28 Tubes by Mechanical Alloying and Using Friction Stir Extrusion
by Parviz Asadi, Mostafa Akbari, Mahyar Talebi, Maryam Peyghami, Tomasz Sadowski and Mohammad Reza Mohammad Aliha
Crystals 2023, 13(5), 814; https://doi.org/10.3390/cryst13050814 - 13 May 2023
Viewed by 1070
Abstract
Friction Stir Extrusion (FSE), the focus of this research, is a process that has tremendous potential for shaping and improving the mechanical properties of the final product as well as the mechanical alloying. In this study, a cylindrical sample of LM13 aluminum, to [...] Read more.
Friction Stir Extrusion (FSE), the focus of this research, is a process that has tremendous potential for shaping and improving the mechanical properties of the final product as well as the mechanical alloying. In this study, a cylindrical sample of LM13 aluminum, to which silicon powder is added, is extruded by the penetration of a tool and takes the shape of a tube. The microstructure of the aluminum tube produced is studied using a light microscope. Various tests, including compression and wear tests, are performed to evaluate the wear and mechanical properties of the tubes produced. Additionally, the process is simulated using the finite element method (FEM), and the strain and temperature distributions in the tubes are examined to understand the impact of tool advancing speed better. The strain and temperature are highest on the inner surface, where the tubes meet the tool. Moreover, as the advancing speed increases from 25 to 40 mm/min, the maximum temperature in the tubes increases from 350 to 400 °C. The surface quality of the samples is directly related to the advancing speed, so the surface quality improves as the advancing speed increases. The results obtained from the compression and wear tests show that the compression strength has increased by about 17%, and the wear resistance has improved by about 20%. Full article
(This article belongs to the Special Issue Current Status and Recent Progress on Advanced Aluminum Alloys)
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