1. A process for fabricating fibrous monolith composites comprising: combining a first powder with a thermoplastic polymer binder and a thermoplastic plasticizer to create a uniformly suspended composition, combining a second powder with a thermoplastic polymer binder and a thermoplastic plasticizer to create a uniformly suspended second composition, warm pressing the first and second uniformly suspended compositions to create a feed rod having a first portion of the first composition surrounded by a second portion of the second composition; and extruding the feed rod through a deposition nozzle onto a mechanically-controlled surface to create a fibrous monolith composite.