Microstructure, strength and fracture toughness of CuNb nanocomposites processed with high pressure torsion using multi-sector disks

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Abstract

CuNb composites were processed by high pressure torsion using specially designed disks consisting of a pre-defined number of single sector elements called multi-sector disks. By variation of the applied plastic strain the composite structure could be tuned ranging from relatively coarse multilayer structures to nanostructured laminates. In this first study the technique is introduced, the microstructural and hardness evolution of CuNb with varying strain is presented and a fracture toughness study of the finest composite structure showing good damage tolerance has been performed.
Original languageEnglish
Pages (from-to)48-52
Number of pages5
JournalScripta Materialia
Volume189.2020
Issue numberDecember
Early online date13 Aug 2020
DOIs
Publication statusPublished - Dec 2020

Bibliographical note

Publisher Copyright: © 2020

Keywords

  • Fracture toughness
  • High pressure torsion
  • Hybrid materials
  • Nanocomposite
  • Severe plastic deformation

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