Gradient Segregation Effects on the Tensile Behaviors of Nano-Crystalline Fe-W Alloys

Abstract

The granular interior to the grain border is some of the segregated regions that are detected using the equidistance scaling method. Based on this method, the model of nano-crystalline (NC) Fe-W alloy with gradient segregation is crafted. The topic of how the solute concentration (SC) distribution in BCC alloys is more matched to the strength improvement is investigated using molecular dynamic (MD) simulation. The simulation outcomes demonstrate that specimens with lower intra-granular SC have greater flow stress levels, more dislocation activities, and narrower amorphous inter-granular films (AIFs). The discovery illustrates how the intrinsic deformation mechanism of BCC alloys is significantly impacted by heterogeneous segregation gradient.

Keywords: Crystal structure, Mechanical properties, nanocrystalline materials