Depth-sensing thermal stability of accumulative fold-forged nanostructured materials

Accumulative fold-forging (AFF) as a newly developed severe plastic deformation (SPD) process based on the repetitive steps is implemented for production of layered UFG (~200 nm) AA8006 alloy and AA8006-B4C nanocomposite (~35 nm, 10 vol%) materials from initial foil. The remarkably refined grains nanoparticles can control metallic materials' mechanical properties, including strength, strain rate dependency, thermal stability behavior. In this context, nano-grains' local response during nanoindentation vary considerably depending testing temperature, has yet to be discussed. research, after characterization produced nanostructured according AFF route, relating depth-sensing them assessed by conducting at different temperatures in range 300–523 K. Depth sensing softening behavior elaborated identify low-temperature processed materials. results enunciated occurrence refining grain structure. However, introducing reinforcing lead pinning action that stabilized boundaries.