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 journalArticle

157 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 1 2011

Fingerprint

Hydrogen storage
Torsional stress
Magnesium
torsion
magnesium
mechanical properties
Mechanical properties
microstructure
Microstructure
hardness
Hardness
hydrogen
Hydrogen
tensile strength
Tensile strength
grain size
room temperature
Processing
Temperature

All Science Journal Classification (ASJC) codes

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

Cite this

High-pressure torsion of pure magnesium : Evolution of mechanical properties, microstructures and hydrogen storage capacity with equivalent strain. / Edalati, Kaveh; Yamamoto, Akito; Horita, Zenji; Ishihara, Tatsumi.

In: Scripta Materialia, Vol. 64, No. 9, 01.05.2011, p. 880-883.

Research output: Contribution to journalArticle

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