Design, Development and Processing of Aluminium Alloys and Their Composite Materials

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

Deadline for manuscript submissions: 20 December 2024 | Viewed by 651

Special Issue Editors


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Guest Editor
School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China
Interests: green low-carbon aluminium alloy system research and development; functional aluminium matrix composite material preparation; laser-enhanced manufacturing; mechanisms of thermodynamic reactions to solidification and crystallisation

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Guest Editor
School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
Interests: Mg alloys; severe plastic deformation; microstructure; texture; advanced experimental characterization
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Guest Editor
School of Materials Science and Engineering, Dongguan University of Technology, Dongguan, China
Interests: additive manufacturing; light alloys; casting; numerical simulations; neutron diffraction

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Guest Editor
School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China
Interests: non-ferrous metal processing; Cu/C composite materials; biomedical materials; solid waste recycling; first-principles calculation

Special Issue Information

Dear Colleagues, 

Aluminium, the most abundant metallic element in the Earth's crust, is one of the most widely used non-ferrous metals in industry, second only to iron and steel in terms of its scope of use because of its good characteristics—low density, high specific strength, workability, and electrical conductivity, superior corrosion resistance, environmental protection and recyclability—and wide range of applications in the aviation, aerospace, construction engineering, and transportation fields.

The design, development, and processing of aluminium alloys and their composites occupy a pivotal position in modern industry to further enhance their toughness, wear resistance, and shear properties. In the case of aluminium alloy composites, researchers have effectively improved the materials’ toughness and wear resistance by introducing various reinforcing phases, such as ceramic particles, carbon nanotubes, and graphene. In this process, the nature, content, and distribution of the reinforcing phase, as well as its interfacial bond strength and wettability with the metal matrix, are the key factors determining the mechanical properties of metal matrix composites. Therefore, the ideal reinforcing phase not only needs to significantly enhance the specific properties of the metal matrix but also have a high degree of stability to avoid violent reactions with the matrix at high temperatures and ensure good metal matrix wettability in order to achieve an effective combination between the two. In addition to material design and development, the processing technology of aluminium alloys and their composites is also key to enhancing their material performance and application scope. Traditional processing methods such as casting, forging, and rolling meet these needs but have limitations, leading researchers to explore new technologies, such as powder metallurgy, EDM, and superplastic forming, to achieve higher precision, lower energy consumption, and better environmental performance.

This Special Issue will focus on the design, development, and processing technologies of aluminium alloys and their composite materials. We warmly invite you to contribute full papers, newsletters, and reviews on the latest developments and research results on this topic. 

Dr. Peng Tang
Prof. Dr. Mingyi Zheng
Dr. Kang Wang
Dr. Xingzhi Pang
Guest Editors

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Keywords

  • aluminium matrix composite materials
  • composition
  • solidification
  • advanced characterization
  • phase composition–property correlation
  • recycled aluminium
  • green low-carbon aluminium alloy system research and development

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Published Papers (1 paper)

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Research

14 pages, 23510 KiB  
Article
Experimental Study of Reaming Sizes on Fatigue Life of Cold-Expanded 7050-T7451 Aluminum Alloy
by Muyu Guan, Qichao Xue, Zixin Zhuang, Quansheng Hu and Hui Qi
Crystals 2024, 14(9), 803; https://doi.org/10.3390/cryst14090803 - 11 Sep 2024
Viewed by 379
Abstract
The split-sleeve cold expansion technology is widely used in the aerospace industry, particularly for fastening holes, to enhance the fatigue life of components. However, to ensure proper assembly and improve surface integrity, reaming of the cold-expanded holes is necessary. This study investigates the [...] Read more.
The split-sleeve cold expansion technology is widely used in the aerospace industry, particularly for fastening holes, to enhance the fatigue life of components. However, to ensure proper assembly and improve surface integrity, reaming of the cold-expanded holes is necessary. This study investigates the effects of cold expansion and reaming processes on the fatigue performance of 7050-T7451 aluminum alloy. Fatigue tests, residual stress measurements, and microstructural analyses of the hole edges were conducted on specimens with four different hole diameters after cold expansion and reaming. It was found that the depth of reaming significantly affects fatigue life. During the cold expansion process, the compressive residual stress formed around the hole effectively improves fatigue performance. The experiments demonstrated that reaming by 0.2 mm to 0.4 mm helps eliminate minor defects, thereby improving fatigue life. However, reaming beyond 0.5 mm may lead to stress relief and the removal of dense grains at the hole edges, reducing fatigue life. Therefore, determining the optimal reaming size is crucial for enhancing the reliability of aerospace fasteners. Full article
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