Bulk Nanostructured Metals by Severe Plastic Deformation (SPD)

摘要

The methods of manufacturing bulk nanostructured metals (BNMs) by means of SPD are concerned. The principle and merits of the two most promising methods are outlined out. New results of properties of SPD-processed BNMs are elucidated, especially in view of commercial applications. The benefits of stronger metals and alloys mainly for automotive industry, higher fatigue resistance of materials for aerospace industry, improved hydrogen storage kinetics in Mg-alloys for fuel cell technology, improved magnets for electronic industry, stronger biocompatible Ti- and Mg-alloys for prostheses, implants and stents are also pointed out. Furthermore, a model based on lattice defect kinetics is presented. It provides quantitatively reliable results for the hardening behavior and microstructural evolution during SPD and post-SPD deformation.