Correlation of physical parameters with steady-state hardness of pure metals processed by high-pressure torsion

Kaveh Edalati, Zenji Horita

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Citations (Scopus)

Abstract

Pure metals of 30 elements with various crystal structures (bcc, fcc, hcp, diamond cubic, complex cubic, primitive hexagonal and tetragonal) are processed by high-pressure torsion (HPT) and their mechanical properties are subsequently evaluated by Vickers microhardness measurements. For all metals, the hardness reaches steady states at large strains where the hardness remains unchanged with further straining. It is shown that the hardness values at the steady state are characteristics of each metal and are successfully expressed as a unique function of the homologous temperature, shear modulus and physical parameters of metals such as melting temperature, specific heat capacity and diffusion coefficient except for a few elements. The findings are well applicable to predict the ultimate steady-state hardness of metals attained by HPT processing through the correlation established in this study.

Original languageEnglish
Title of host publicationNanomaterials by Severe Plastic Deformation, NanoSPD5
PublisherTrans Tech Publications Ltd
Pages683-688
Number of pages6
ISBN (Print)9783037850077
DOIs
Publication statusPublished - 2011

Publication series

NameMaterials Science Forum
Volume667-669
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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    Edalati, K., & Horita, Z. (2011). Correlation of physical parameters with steady-state hardness of pure metals processed by high-pressure torsion. In Nanomaterials by Severe Plastic Deformation, NanoSPD5 (pp. 683-688). (Materials Science Forum; Vol. 667-669). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/MSF.667-669.683