Structure and Mechanical Properties of Aluminum Alloys

A special issue of Metals (ISSN 2075-4701).

Deadline for manuscript submissions: 31 July 2025 | Viewed by 1510

Special Issue Editor


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Guest Editor
School of Materials Science and Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China
Interests: metal and alloys; mechanical properties; microstructure; welding; additive manufacturing

Special Issue Information

Dear Colleagues,

Aluminum alloy is the most extensively utilized lightweight metal structural material in modern industrial applications, such as in aerospace, automobiles, rail vehicles, smart furniture, mobile phones, and weapons and equipment. The mechanical properties of aluminum alloys are one of their most important features, and their higher comprehensive mechanical properties are key to expanding their further application. Generally, mechanical properties are dependent on the microstructure of the alloy. Exploring and regulating the microstructure and mechanical properties of the material is crucial to achieving the preparation of a high-performance aluminum alloy.

The current Special Issue of Metals focuses on the structure and mechanical properties of aluminum alloy; this includes, but is not limited to, the latest developments in aluminum-based composite materials, welding, novel manufacturing methods (additive manufacturing), and new methods for the characterization of the microstructure and mechanical properties of alloys. We welcome the submission of both reviews and research articles.

Dr. Jiqiang Chen
Guest Editor

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Keywords

  • Al alloy
  • microstructure
  • mechanical properties
  • composite
  • additive manufacturing
  • welding
  • processing method
  • characterization

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Published Papers (1 paper)

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Research

14 pages, 9683 KiB  
Article
Microstructure, Mechanical Properties, and Fatigue Resistance of an Al-Mg-Sc-Zr Alloy Fabricated by Wire Arc Additive Manufacturing
by Lingpeng Zeng, Jiqiang Chen, Tao Li, Zhanglong Tuo, Zuming Zheng and Hanlin Wu
Metals 2025, 15(1), 31; https://doi.org/10.3390/met15010031 - 1 Jan 2025
Viewed by 1135
Abstract
Al-Mg alloy wire modified by Sc and Zr additions was used to prepare a high-strength, non-heat-treated Al-Mg alloy component by wire arc additive manufacturing (WAAM) technology in the present work, and the microstructure, mechanical properties, fatigue resistance, as well as their anisotropies of [...] Read more.
Al-Mg alloy wire modified by Sc and Zr additions was used to prepare a high-strength, non-heat-treated Al-Mg alloy component by wire arc additive manufacturing (WAAM) technology in the present work, and the microstructure, mechanical properties, fatigue resistance, as well as their anisotropies of the deposited Al-Mg-Sc-Zr alloy component were studied. The results show that the microstructure of the as-deposited alloy is composed of fine equiaxed grains with an average grain size of around 8 μm, and nanosized Al3(Sc, Zr) particles (~5 nm) are also evident. The tensile properties and fatigue resistance of the deposited alloy showed significant anisotropy, and the performance of the traveling direction is always better than that of the deposition direction. The ultimate strength, yield strength, elongation, and critical fatigue life (cycles) of the as-deposited alloy along the traveling direction (0° direction) are 362 ± 7 MPa, 244 ± 3 MPa and 24.8 ± 0.3%, and 1.72 × 105, respectively. The presence of weak bonding areas and high tensile (positive) residual stress between the deposition layers deteriorate the tensile properties and critical fatigue life of the sample along the deposition direction. Full article
(This article belongs to the Special Issue Structure and Mechanical Properties of Aluminum Alloys)
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