High-temperature metallic glasses: Status, needs, and opportunities

Metallic glasses that combine the mechanical properties of metals with the chemical durability of glasses are highly desirable, especially for applications in extreme environments such as those in nuclear and aerospace industries. However, commonly studied metallic glasses often crystallize at lower temperatures and are not suitable for such applications. In this research update, the authors highlight recent advances in metallic glasses with crystallization temperatures above 700\ifmmode \mathring{}\else \r{}\fi{}C. These high temperature metallic glasses are discussed in terms of the formation methods, the glass forming ability, as well as the thermodynamic properties and mechanical properties. An outlook section provides the reader with an overview of the areas of research that have thus far been neglected with a specific focus on corrosion and mechanical properties. Successful development of high temperature metallic glasses can lead to a new class of materials for extreme environments.