Abstract Scope |
Metastability is an alloy design principle that exploits the thermodynamic weakness of metallic materials against phase transformation. While most materials are thermodynamically metastable at some stage during synthesis and service, metastability alloy design targets cases where metastable phases are not coincidentally inherited from processing, but rather are engineered, e.g. by alloying, size effects or microstructure. In this talk, we show applications of the metastability design principle for the case of compositionally complex metallic alloys, building on compositional (partitioning), thermal (kinetics), and microstructure (size effects and confinement) tuning of metastable phases so that they can trigger athermal transformation effects when mechanically, thermally, or electromagnetically loaded. |