Aging Behavior of Mg Alloys Containing Nd and Y

摘要

Magnesium rare earth (Mg-RE) alloys form unique precipitate structures during aging that make these materials desirable for applications where a high strength to weight ratio is important. Commercial alloys such as WE43 are quite complex, making it difficult to fully understand the factors controlling precipitation, which are needed in the design of new and improved alloys. Here, we present our initial observations of the different precipitate phases that form in Mg-Nd, Mg-Y, and Mg-Y-Nd alloys using scanning transmission electron microscopy and atom probe tomography and relate the microstruc-ture to measured changes in alloy hardness via post-mortem observations of deformed alloys.