High Pressure Torsion (HPT) is a well known procedure to obtain nano- and sub-micrometer grained microstructures in bulk materials. The paper is separated into two parts.
The first one is devoted to the HPT technique itself. A careful analysis of the homogeneity of the deformation during HPT is performed in order to understand the peculiar behavior described in the literature. Even at large numbers of revolutions a nearly idealized torsion deformation is observed. Reasons for the reported deviation between observations and ideal torsion deformation are discussed.
The second part is devoted to HPT-deformation of dual phase materials. The behavior in this type of materials is more complex than in single phase materials. It varies from simple homogenization, fragmentation of one phase, to disintegration and supersaturation of the phases. Examples for the different mechanisms are presented.

• Legal notice:
  

  Copyright (c) Pielaszek Research, all rights reserved.
  The above materials, including auxiliary resources, are subject to Publisher's copyright and the Author(s) intellectual rights. Without limiting Author(s) rights under respective Copyright Transfer Agreement, no part of the above documents may be reproduced without the express written permission of Pielaszek Research, the Publisher. Express permission from the Author(s) is required to use the above materials for academic purposes, such as lectures or scientific presentations.
  In every case, proper references including Author(s) name(s) and URL of this webpage: https://science24.com/paper/4059 must be provided.