Additive Manufacturing of Compositionally Complex and High Entropy Alloys

Dear Colleagues,

Compositionally Complex alloys including high-entropy alloys are a relatively new class of metallic alloys that differ fundamentally from conventional alloys. These alloys exhibit excellent mechanical properties and the phenomena are as yet poorly understood with classical materials knowledge. In conjunction with rapid solidification processes in additive manufacturing, there are opportunities for a wide range of new applications. Therefore, research interest has increased sharply in recent years.

Compositionally Complex alloys consist of multiple elements with similar high atomic fractions and often exhibit single crystalline structures. So far, examples have been reported in which high mechanical strength coupled with high ductility, high strength at elevated temperatures, high wear resistance, or high resistance to corrosion and oxidation have been demonstrated. In conjunction with 3D printing and its high cooling rates, entirely new possibilities arise for complex components that are exposed to extreme conditions, for example, or that can contribute to sustainability and reduced CO2 emissions.

This special issue is intended to reflect the growing interest in these materials in connection with additive manufacturing and offers the opportunity to report on new developments and applications. Basic research-oriented contributions that deepen the understanding of microstructures evolution are considered. Studies describing thermal post-treatments to improve material properties are also encouraged.

Dr. Volker Uhlenwinkel
Prof. Dr. Eric Jägle
Prof. Dr. Claudemiro Bolfarini
Guest Editors

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