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

doi:10.1016/j.scriptamat.2011.01.023

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

Advanced Energy Conversion Systems Thrust

Research output: Contribution to journal › Article › peer-review

227 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 language	English
Pages (from-to)	880-883
Number of pages	4
Journal	Scripta Materialia
Volume	64
Issue number	9
DOIs	https://doi.org/10.1016/j.scriptamat.2011.01.023
Publication status	Published - 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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10.1016/j.scriptamat.2011.01.023

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

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.",

author = "Kaveh Edalati and Akito Yamamoto and Zenji Horita and Tatsumi Ishihara",

note = "Funding Information: We would like to thank Prof. Kenji Higashida of Kyushu University for his precious comments and insightful discussions. One of the authors (K.E.) also thanks the Japan Society for Promotion of Science (JSPS) for a postdoctoral scholarship. This work was supported in part by the Light Metals Educational Foundation of Japan , in part by a Grant-in-Aid for Scientific Research from the MEXT, Japan, in Innovative Areas “Bulk Nanostructured Metals” and in part by Kyushu University Interdisciplinary Programs in Education and Projects in Research Development (P&P) .",

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language = "English",

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AU - Edalati, Kaveh

AU - Yamamoto, Akito

AU - Horita, Zenji

AU - Ishihara, Tatsumi

N1 - Funding Information: We would like to thank Prof. Kenji Higashida of Kyushu University for his precious comments and insightful discussions. One of the authors (K.E.) also thanks the Japan Society for Promotion of Science (JSPS) for a postdoctoral scholarship. This work was supported in part by the Light Metals Educational Foundation of Japan , in part by a Grant-in-Aid for Scientific Research from the MEXT, Japan, in Innovative Areas “Bulk Nanostructured Metals” and in part by Kyushu University Interdisciplinary Programs in Education and Projects in Research Development (P&P) .

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N2 - 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.

AB - 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.

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

Abstract

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