In situ production of bulk intermetallic-based nanocomposites and nanostructured intermetallics by high-pressure torsion

Kaveh Edalati; Shoichi Toh; Masashi Watanabe; Zenji Horita

doi:10.1016/j.scriptamat.2011.11.039

In situ production of bulk intermetallic-based nanocomposites and nanostructured intermetallics by high-pressure torsion

Kaveh Edalati, Shoichi Toh, Masashi Watanabe, Zenji Horita

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

49 Citations (Scopus)

Abstract

Micropowder mixtures of Al-50 mol.% Ni were severely deformed by high-pressure torsion and Al ₃Ni ₂/Ni nanocomposites were produced. The hardness increased with straining, as a consequence of nanograin formation and high-strain-induced solid-state reactions, and saturated to a steady-state level, 920 Hv. The reactions were completed and nanostructured AlNi intermetallics were produced by subsequent annealing. The formation of nanostructured intermetallics was feasible in this process at significantly low temperatures because of the rapid diffusion and short diffusion paths resulting from intense shearing.

Original language	English
Pages (from-to)	386-389
Number of pages	4
Journal	Scripta Materialia
Volume	66
Issue number	6
DOIs	https://doi.org/10.1016/j.scriptamat.2011.11.039
Publication status	Published - Mar 2012

All Science Journal Classification (ASJC) codes

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

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@article{bea5d0402921407cb19c8e3353ab90e4,

title = "In situ production of bulk intermetallic-based nanocomposites and nanostructured intermetallics by high-pressure torsion",

abstract = "Micropowder mixtures of Al-50 mol.% Ni were severely deformed by high-pressure torsion and Al 3Ni 2/Ni nanocomposites were produced. The hardness increased with straining, as a consequence of nanograin formation and high-strain-induced solid-state reactions, and saturated to a steady-state level, 920 Hv. The reactions were completed and nanostructured AlNi intermetallics were produced by subsequent annealing. The formation of nanostructured intermetallics was feasible in this process at significantly low temperatures because of the rapid diffusion and short diffusion paths resulting from intense shearing.",

author = "Kaveh Edalati and Shoichi Toh and Masashi Watanabe and Zenji Horita",

note = "Funding Information: One of the authors (K.E.) thanks the Japan Society for Promotion of Science (JSPS) for a postdoctoral scholarship. This work was supported 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). ",

year = "2012",

month = mar,

doi = "10.1016/j.scriptamat.2011.11.039",

language = "English",

volume = "66",

pages = "386--389",

journal = "Scripta Materialia",

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number = "6",

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T1 - In situ production of bulk intermetallic-based nanocomposites and nanostructured intermetallics by high-pressure torsion

AU - Edalati, Kaveh

AU - Toh, Shoichi

AU - Watanabe, Masashi

AU - Horita, Zenji

N1 - Funding Information: One of the authors (K.E.) thanks the Japan Society for Promotion of Science (JSPS) for a postdoctoral scholarship. This work was supported 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).

PY - 2012/3

Y1 - 2012/3

N2 - Micropowder mixtures of Al-50 mol.% Ni were severely deformed by high-pressure torsion and Al 3Ni 2/Ni nanocomposites were produced. The hardness increased with straining, as a consequence of nanograin formation and high-strain-induced solid-state reactions, and saturated to a steady-state level, 920 Hv. The reactions were completed and nanostructured AlNi intermetallics were produced by subsequent annealing. The formation of nanostructured intermetallics was feasible in this process at significantly low temperatures because of the rapid diffusion and short diffusion paths resulting from intense shearing.

AB - Micropowder mixtures of Al-50 mol.% Ni were severely deformed by high-pressure torsion and Al 3Ni 2/Ni nanocomposites were produced. The hardness increased with straining, as a consequence of nanograin formation and high-strain-induced solid-state reactions, and saturated to a steady-state level, 920 Hv. The reactions were completed and nanostructured AlNi intermetallics were produced by subsequent annealing. The formation of nanostructured intermetallics was feasible in this process at significantly low temperatures because of the rapid diffusion and short diffusion paths resulting from intense shearing.

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