Publications

Dynamic Tensile Behavior of Soft Ferromagnetic Alloy Fe-Co-2V

Sanborn, Brett S.; Song, Bo S.; Susan, D.F.; Johnson, Kyle J.; Dabling, Jeffrey D.; Carroll, Jay D.; Brink, Adam R.; Grutzik, Scott J.; Kustas, Andrew K.

Fe-Co-2V is a soft ferromagnetic alloy used in electromagnetic applications due to excellent magnetic properties. However, the discontinuous yielding (Luders bands), grain-size-dependent properties (Hall-Petch behavior), and the degree of order/disorder in the Fe-Co-2V alloy makes it difficult to predict the mechanical performance, particularly in abnormal environments such as elevated strain rates and high/low temperatures. Thus, experimental characterization of the high strain rate properties of the Fe-Co-2V alloy is desired, which are used for material model development in numerical simulations. In this study, the high rate tensile response of Fe-Co-2V is investigated with a pulse-shaped Kolsky tension bar over a wide range of strain rates and temperatures. Effects of temperature and strain rate on yield stress, ultimate stress, and ductility are discussed.