Preparation and Properties of Aluminum Alloy Materials (2nd Edition)

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

Deadline for manuscript submissions: 20 March 2025 | Viewed by 722

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Guest Editor
School of Materials Science and Engineering, Northeastern University, Shenyang 110819, China
Interests: research on the preparation technology for high-quality aluminum alloy materials; equipment and process development for the preparation of aluminum alloy materials; microstructure and performance control of aluminum alloy materials
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Special Issue Information

Dear Colleagues,

The combination of the low density, good corrosion resistance, strength, and formability of aluminum alloys makes them attractive to automotive and aircraft manufacturers. Research has shown that lightweight vehicles can improve vehicle power, reduce fuel consumption, and reduce exhaust emissions and air pollution while ensuring vehicle strength and safety performance. For every 10% reduction in vehicle weight, fuel consumption can be reduced by 6%–8%, and exhaust emissions can be reduced by 5%–6%. The main goal of modern aircraft manufacturing is to reduce manufacturing costs and operating expenses. Compared with steel materials for automobiles, aluminum alloys absorb 50% more energy than steel during a crash. Aluminum alloys are green and environmentally friendly materials that can be recycled. They are very important and one of the best materials for the lightweight design of automobiles.

In recent decades, global environmental protection has required the automotive industry to increase fuel efficiency and reduce carbon dioxide emissions. This has promoted research into the application of lightweight materials instead of traditional steel materials. These are currently hot and timely topics. Therefore, considering the safety of vehicles, it is necessary to carry out systematic research on the component design, forming process, and performance control of aluminum alloy materials in terms of replacing steel with aluminum alloys. The present Special Issue on the “Preparation and Properties of Aluminum Alloy Materials” will showcase status reports summarizing the progress achieved in the last five years.

It is our pleasure to invite you to submit a manuscript to this Special Issue. Full papers, communications, and reviews are all welcome.

Dr. Xiangjie Wang
Guest Editor

Manuscript Submission Information

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Keywords

  • aluminum alloy
  • lightweight
  • microstructure
  • properties
  • materials design of AI alloys and composites
  • manufacturing process

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Published Papers (1 paper)

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Research

16 pages, 9947 KiB  
Article
Weld Pool Flow Characteristics in Double-Wire Arc Welding of Aluminum Alloys: Research by Numerical Simulations
by Bolun Dong, Yunhao Xia, Zhida Ni, Xiaoyu Cai and Sanbao Lin
Crystals 2024, 14(10), 881; https://doi.org/10.3390/cryst14100881 - 9 Oct 2024
Viewed by 582
Abstract
Double-wire arc welding involves simultaneously feeding two wires into a molten pool, improving the efficiency and flexibility of traditional welding techniques. However, the interactions between the two wires and the molten pools are complex, which increases the difficulties in process and composition control. [...] Read more.
Double-wire arc welding involves simultaneously feeding two wires into a molten pool, improving the efficiency and flexibility of traditional welding techniques. However, the interactions between the two wires and the molten pools are complex, which increases the difficulties in process and composition control. This work focuses on the weld pool flow characteristics in double-wire TIG arc welding. A CFD model incorporating a liquid bridge transfer model was developed to simulate the fluid flow phenomenon. Results show that the bead-forming appearances and flow characteristics of double-wire arc welding show no significant differences from single-wire arc welding. Welding current and welding speed have significant effects on the weld bead dimensions, while only welding current has effects on the flow characteristics. Wire feed XOZ angles show no significant influences on weld bead forming appearances and molten pool flow characteristics. Wire feed XOY angles influence the symmetry of the weld bead and the fluid flow. In 5B71/7055 heterogeneous double-wire arc welding, achieving a uniform distribution of alloy elements is difficult due to the complex convection patterns within the molten pool. Full article
(This article belongs to the Special Issue Preparation and Properties of Aluminum Alloy Materials (2nd Edition))
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