Research Topic

Dual-phase Materials in the Medium and High Entropy Alloy Systems Al-Cr-Fe-Ni and Al-Co-Cr-Fe-Ni

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About this Research Topic

Medium and high entropy materials from the alloy systems Al-Cr-Fe-Ni and Al-Co-Cr-Fe-Ni have attracted wide interest in the materials science community, with a recent focus on dual-phase materials consisting of BCC and FCC phases in various microstructural configurations, e.g. duplex, eutectic, etc. Examples ...

Medium and high entropy materials from the alloy systems Al-Cr-Fe-Ni and Al-Co-Cr-Fe-Ni have attracted wide interest in the materials science community, with a recent focus on dual-phase materials consisting of BCC and FCC phases in various microstructural configurations, e.g. duplex, eutectic, etc. Examples are alloys AlxCoCrFeNi with 0.4
This Research Topic aims at compiling the most recent research results on dual-phase materials from the alloy systems Al-Cr-Fe-Ni and Al-Co-Cr-Fe-Ni and providing a seminal and critical view on the current state and the future development trends for this class of materials. Our key ambition is to bridge from science towards applications, which requires a well-grounded comparison with established reference materials along with an outline of currently envisaged or implemented applications.

The Research Topic welcomes articles on, but not limited to, the following list of subjects, calling for either experimental and / or modeling results:
· thermodynamic data and CALPHAD databases
· phase transformations and crystal orientation relationships
· alloy design and microstructure evolution
· grain boundary and phase boundary engineering
· manufacturing of bulk materials and coatings
· additive and hybrid manufacturing
· joining technologies: welding, brazing, etc.
· mechanical properties and microstructure-property relationships
· corrosion, tribo-corrosion, oxidation
· comparison with established reference materials
· current and future applications

Research articles shall refer to dual-phase materials from the alloy systems Al-Cr-Fe-Ni and/or Al-Co-Cr-Fe-Ni only, but small additions of other elements like carbon, titanium, molybdenum, boron, etc. are equally within the scope of this topical call, if used for grain refinement, grain boundary engineering or any other means of microstructure tailoring.

Rather than using Ashby maps the contributors are encouraged to include a detailed comparison to a reference material of choice, being selected from the perspective of a potential or envisaged application case.

Whenever possible, the contributors are invited to carefully and critically examine the “high entropy effects” at case and to describe their importance concerning microstructure formation and stability or to the achieved materials properties.


Keywords: dual-phase, duplex, eutectic, high entropy, medium entropy


Important Note: All contributions to this Research Topic must be within the scope of the section and journal to which they are submitted, as defined in their mission statements. Frontiers reserves the right to guide an out-of-scope manuscript to a more suitable section or journal at any stage of peer review.

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