The effect of high-pressure torsion on the microstructure and hydrogen absorption kinetics of ball-milled Mg70Ni30

A. Révész, Zs Kánya, T. Verebélyi, P. Szabó, A. P. Zhilyaev, T. Spassov

Research output: Contribution to journalArticle

47 Citations (Scopus)

Abstract

Ball-milled nanocrystalline Mg70Ni30 powders were subjected to heavy shear deformation by the process of high-pressure torsion (HPT). X-ray diffraction analysis revealed that HPT results in a deformation-dependent microstructural refinement. Complementary hydrogen sorption kinetic measurements indicate that the maximum absorption capacity is increased by 30-50% after HPT due to the creation of new possible hydrogen absorption sites at the grain boundaries and at lattice defects.

Original languageEnglish
Pages (from-to)83-88
Number of pages6
JournalJournal of Alloys and Compounds
Volume504
Issue number1
DOIs
Publication statusPublished - Aug 31 2010

Fingerprint

Torsional stress
Hydrogen
Microstructure
Kinetics
Nanocrystalline powders
Crystal defects
Shear deformation
X ray diffraction analysis
Sorption
Grain boundaries

Keywords

  • Ball milling
  • Deformation
  • Hydrogen storage
  • Nanostructure
  • X-ray diffraction

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Chemistry
  • Metals and Alloys

Cite this

The effect of high-pressure torsion on the microstructure and hydrogen absorption kinetics of ball-milled Mg70Ni30. / Révész, A.; Kánya, Zs; Verebélyi, T.; Szabó, P.; Zhilyaev, A. P.; Spassov, T.

In: Journal of Alloys and Compounds, Vol. 504, No. 1, 31.08.2010, p. 83-88.

Research output: Contribution to journalArticle

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AU - Spassov, T.

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