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Microstructure Evolution, Mechanical Behavior and Performance of Metallic Materials

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Metals and Alloys".

Deadline for manuscript submissions: 20 August 2025 | Viewed by 233

Special Issue Editor

Special Issue Information

Dear Colleagues,

Metallic materials play important roles in various industrial sectors due to their exceptional properties and wide-ranging applications. When developing a new structure material, understanding the relationship between material properties, microstructure evolution, processing technology and mechanical response is essential. This Special Issue welcomes the submission of high-quality research on various aspects of metals and alloys, including microstructure evolution, materials design, numerical modeling, processing technology, and failure mechanisms. In particular, we encourage papers on the relationship between advanced manufacturing processing and the microstructural properties of metals and alloys. This scope will enable the development of metallic materials with customized properties for a range of applications in engineering, aerospace, automotive, and other industries.

Dr. Guobing Wei
Guest Editor

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Keywords

  • microstructure evolution
  • mechanical properties
  • strengthening mechanisms
  • numerical modeling
  • failure mechanisms

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Published Papers (1 paper)

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Research

17 pages, 20586 KiB  
Article
In Situ EBSD Study of Aluminum After Embrittlement by Gallium
by Kaikai Cai, Shuo Wang, Daixin Zhang, Haiyun Feng, Pu Song and Hongwei Hu
Materials 2025, 18(5), 1026; https://doi.org/10.3390/ma18051026 - 26 Feb 2025
Viewed by 136
Abstract
Liquid metal embrittlement is a phenomenon in which the mechanical properties of a metallic material are significantly reduced after contact with liquid metal, and the microscopic mechanism of this phenomenon is still controversial. The grain boundary penetration mechanism has recently been widely recognized, [...] Read more.
Liquid metal embrittlement is a phenomenon in which the mechanical properties of a metallic material are significantly reduced after contact with liquid metal, and the microscopic mechanism of this phenomenon is still controversial. The grain boundary penetration mechanism has recently been widely recognized, but the theory is still deficient. To refine the theory of grain boundary penetration, in this paper, the liquid metal embrittlement mechanism of aluminum by gallium is obtained by in situ EBSD, combining it with the fracture morphology features and comparing the differences of the microscopic feature changes and the crack evolution process during the in situ tensile process of embrittled and untreated aluminum specimens. The results show that the fracture elongation of aluminum decreased by 60% after being embrittled by liquid gallium at 80 °C for 40 min, and the gallium atoms entering the aluminum interior decreased the grain boundary cohesion while promoting dislocation emission. Combining the experimental results and previous studies, we divide the fracture of aluminum after liquid metal embrittlement into three stages, namely, the grain boundary penetration stage, the local fracture stage, and the integral failure stage. Full article
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