Oxide Dispersion Strengthened High Entropy Alloy and Mechanical Alloying

Dear Colleagues,

Materials fabricated using mechanical alloying (MA) contribute significantly to industrial applications. They represent a highly diverse and strongly multidisciplinary area, with links to numerous industrial sectors such as aerospace, energy, construction, automotive, transport, packaging, security, and defense. Mechanical alloying is considered the most appropriate processing method for producing oxide dispersion strengthened (ODS) alloys, which exhibit good creep resistance, thermal stability, wear resistance, and oxidation resistance, among other beneficial properties. In recent years, high-entropy alloys (HEAs) have arisen as a new class of metallic alloys in which the formation of a solid solution rather than intermetallic compounds is favored. Thus, ODS-HEAs are promising structural materials for applications requiring high temperature and radiation resistance due to the high configurational entropy and pinning effect of their dispersed oxide particles, which restrict dislocation motion and restrain grain growth. This Special Issue will consider all aspects of theory, methods, materials, and applications of mechanical alloying. Contributions on the following topics are encouraged:

• Synthesis and processing in solid-state science and technology: sequential alloying, high-energy milling, reaction milling;
• New materials/in situ formation: oxide dispersion strengthened (ODS) alloys, high-entropy alloys, nanocomposites, and in situ formation of nanodispersoids;
• Structural characterization: mechanically induced structural changes in materials (point defects, dislocations, clusters, precipitates, grain boundaries), surfaces, and interfaces in activated solids;
• New equipment and procedures: milling equipment based on improved milling dynamics, processing optimization, and milling contamination.

Prof. Dr. Chun-Liang Chen
Guest Editor

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