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Author: search.filters.author.Chankitmunkong, SuwareeSubject: search.filters.subject.Intermetallics

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    Towards the Design of Highly Heterogeneous Aluminum Alloys
    (2025-01-01)
    Eskin, Dmitry G.
    ;
    Chankitmunkong, Suwaree
    ;
    Zhu, Chengbo
    Modern engineering applications require new types of alloys with a unique combination of properties. Alloys with the large volume fraction of intermetallic phases started to attract the attention of researchers, for example, eutectic alloys of the Al–Fe–Ni and Al–Ce–Ni systems. Such alloys have high elasticity modulus, thermal stability, hardness and high-temperature properties, however their applications is limited to casting and mostly hypoeutectic or eutectic alloys. Formation of primary intermetallics poses a challenge unless they can be efficiently refined. Here we present a number of approaches to refine the structure of hypereutectic Al Fe, Al–Ni, Al–Ce–Ni–Mn alloys through additions, ultrasonic processing (USP) and increased cooling rates. As a result, the structure of alloys makes them suitable for deformation and additive manufacturing with extra strength gained through dispersion hardening. These approaches may pave way to the new type of alloys for demanding applications.