Dissimilar Metals Joining (Page 3)

Functionally Graded Materials (FGMs) are comprised of a unique mixture of materials blended into specialized superalloys through AM DED. EWI has recently completed R&D to create a set of these materials for the Department of Energy and is working to develop standard methods for modeling and validating FGMs. This work is discussed in Functionally Graded...

Metal matrix composites (MMCs) have always been considered “unweldable,” and have been joined mechanically in the past. Now, however, EWI reports that aluminum MMCs can be joined using friction stir welding, a solid-state joining method. This investigation is discussed in Friction Stir Welding of Metal Matrix Composites, written by EWI Senior Engineer Michael Eff. You...

A standard electric vehicle (EV) automotive battery can be decomposed into cell level, module level, and pack level. A cell mainly includes the anodes and cathodes, a module includes multiple cells, and a pack includes multiple modules. The three most common metal-to-metal joints in a lithium-ion battery pack are foil-to-tab, tab-to-tab, and tab-to-bus. All three...