Light Alloy and Its Application (3rd Edition)

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

Deadline for manuscript submissions: 30 April 2026 | Viewed by 390

Special Issue Editor


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Guest Editor
State Key Laboratory of Advanced Special Steel & Shanghai Key Laboratory of Advanced Ferrometallurgy & School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China
Interests: titanium alloy; TiAl single crystal; intermetallic compound; theoretical calculation; alloy design; refractories for titanium alloys
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Special Issue Information

Dear Colleagues,

Light alloys are a type of advanced materials composed mainly of low-density metals such as aluminum, magnesium, and titanium. Due to their excellent specific strength and functionality, they are widely regarded as key fundamental materials for modern high-end equipment manufacturing. In the aerospace field, light alloys are the key material support for reducing the weight, enhancing efficiency, and improving the carrying capacity and fuel economy of aircraft. In the automotive industry, light alloys are an important option for promoting the transition towards electrification and weight reduction. For instance, aluminum alloys are widely used in the bodies of new energy vehicles and the enclosures of battery packs, which can significantly reduce the curb weight, and thereby extend the range, of these vehicles. Magnesium alloys, due to their outstanding shock absorption properties and electromagnetic shielding capabilities, are also gradually being used in precision structural components such as spacecraft brackets and electronic equipment casings. Furthermore, titanium alloys, due to their high specific strength, corrosion resistance, and high-temperature tolerance, have become the ideal materials for components, such as compressor blades of aircraft engines and cabin structures of spacecraft, that operate under high temperatures and heavy loads. Although light alloys have been widely used in many high-end applications, they still face challenges such as insufficient high-temperature performance, complex forming processes, and high corrosion protection requirements. Currently, related research is continuously deepening in directions such as multi-component alloy design, process integration, advanced preparation, and intelligent manufacturing. To further promote the development of light alloys, we are launching this Special Issue of Metals, where we welcome the submission of reviews and articles around the basic research, theoretical calculations, designs, material preparation and characterization, and applications of light alloys.

Prof. Dr. Chonghe Li
Guest Editor

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Keywords

  • light alloy
  • lightweight high-entropy alloy
  • aluminum alloy
  • magnesium alloy
  • titanium alloy
  • magnesium–lithium alloy
  • intermetallic compound
  • thermodynamics and kinetics
  • metallurgy

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Published Papers (1 paper)

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Research

17 pages, 6099 KB  
Article
Influence of B on the Practical Properties of TiAl Alloys for Jet Engine Blades and a Comparison of TiAl4822 and XD Alloys
by Toshimitsu Tetsui and Kazuhiro Mizuta
Metals 2025, 15(10), 1132; https://doi.org/10.3390/met15101132 - 11 Oct 2025
Viewed by 233
Abstract
B is considered a valuable additive for TiAl alloys, because it is believed to improve their properties by refining their microstructures. However, the effects of B on the practical properties of TiAl alloys for jet engine blades and the optimal addition amount for [...] Read more.
B is considered a valuable additive for TiAl alloys, because it is believed to improve their properties by refining their microstructures. However, the effects of B on the practical properties of TiAl alloys for jet engine blades and the optimal addition amount for achieving balanced properties remain unclear. Specifically, there have been very few studies to date in which the practical properties of alloys have been evaluated across a wide range of B addition levels. Therefore, we evaluated various reliability, cost, and performance properties of jet engine blade materials using cast Ti-45,47Al-2Nb-2Mn (the same as XD alloys), with varying B addition levels. The results showed that, in some cases, low B addition levels (0.1–0.2 at.%) could enhance the impact resistance and high-cycle fatigue performance. However, even low B addition levels negatively impacted the machinability, castability, and creep strength. Further, adding 0.4 B or more significantly reduced most practical properties. Compared to XD alloys, TiAl4822 exhibited a superior balance, which is attributed to the higher B content (1 at.%) in XD alloys and the greater effectiveness of Cr relative to Mn in improving the alloy’s high-temperature impact resistance. Full article
(This article belongs to the Special Issue Light Alloy and Its Application (3rd Edition))
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