High-Entropy Alloy Films, Coatings, and Bulks: Preparation, Manufacture, Properties, and Applications

Dear Colleagues,

A high-entropy alloy is a kind of high-mixed-entropy alloy composed of several main and supplementary elements, usually containing solid solution phases and micron-sized crystals, nanocrystals, or amorphous phases. This is not only dependent on the chemical composition of the alloy, but also the preparation method. According to current research results, methods for the preparation of high-entropy alloys are basically the same as traditional alloy preparation methods. However, the preparation of high-entropy alloys has its own characteristics. The methods for preparing high-entropy alloys fall into three groups: casting, mechanical alloying and powder metallurgy. These can be used to prepare amorphous high-entropy alloys, single crystals or nanocrystals, and can also be used to prepare bulk material, thin film materials or sheets, strips and filamentous materials.

Additive manufacturing methods using laser beam, electron beam and arc with a high-energy-density heat source have recently begun to represent a new path for the preparation of high-entropy alloys and the fabrication of complex parts. Typically, laser powder bed fusion, directed energy deposition and wire arc additive manufacturing are suitable for preparing high-entropy alloys and their parts.

This Special Issue will serve as a forum for papers in the following concepts:

• Theoretical and experimental research, knowledge and new ideas in the additive manufacturing of high-entropy alloy films/coatings/bulks.
• Recent developments in high-entropy alloy films/coatings/bulks.
• Understanding the phase formation mechanisms of high-entropy alloy bulks through laser powder bed fusion, directed energy deposition, wire arc additive manufacturing etc.
• High-entropy alloy powders for additive manufacturing processes.
• Novel additive manufacturing processes for preparing high-entropy alloy films/coatings/bulks.

We look forward to receiving your contributions.

Dr. Xiaowei Zhang
Prof. Dr. Hongxi Liu
Guest Editors

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