High-pressure torsion of pure magnesium: Evolution of mechanical properties, microstructures and hydrogen storage capacity with equivalent strain

Kaveh Edalati, Akito Yamamoto, Zenji Horita, Tatsumi Ishihara

Research output: Contribution to journalArticlepeer-review

178 Citations (Scopus)

Abstract

Pure Mg (99.9%) is processed by high-pressure torsion (HPT) at room temperature. The hardness behavior with imposed strain is similar to pure Al (99.99%), having a hardness maximum followed by a steady state. HPT processing increases the hardness and tensile strength. A bimodal microstructure with an average grain size of ∼1 μm is developed by HPT with some grains free of dislocations. Hydrogen absorption is improved by HPT after 10 revolutions, and a total hydrogen absorption of 6.9 wt.% is achieved.

Original languageEnglish
Pages (from-to)880-883
Number of pages4
JournalScripta Materialia
Volume64
Issue number9
DOIs
Publication statusPublished - May 2011

All Science Journal Classification (ASJC) codes

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

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