Diffusion bonding in ultra fine-grained Al–Fe alloy indicating high-strain-rate superplasticity

The high temperature deformation mechanism and the diffusion bonding process were investigated on a nanocrystalline Al–Fe alloy having ultra fine grain sizes of 100 nm, produced by physical vapor deposition (PVD). Tensile tests revealed that the dominant deformation mechanism of the nanocrystalline...

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Bibliographic Details
Published in:Acta materialia 2004-02, Vol.52 (4), p.1051-1059
Main Authors: Somekawa, Hidetoshi, Tanaka, Tsutomu, Sasaki, Hiroyuki, Kita, Kazuhiko, Inoue, Akihisa, Higashi, Kenji
Format: Article
Language:English
Subjects:
Al–Fe alloy
Constitutive equation
Cross-disciplinary physics: materials science
rheology
Deformation, plasticity, and creep
Diffusion bonding
Exact sciences and technology
Materials science
Nanomaterial
Physical vapor deposition
Physics
Superplasticity
Treatment of materials and its effects on microstructure and properties
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Summary:The high temperature deformation mechanism and the diffusion bonding process were investigated on a nanocrystalline Al–Fe alloy having ultra fine grain sizes of 100 nm, produced by physical vapor deposition (PVD). Tensile tests revealed that the dominant deformation mechanism of the nanocrystalline material was cooperative grain boundary sliding accommodated by slip, which is controlled by lattice diffusion. The constitutive equation could be developed on Al based alloys having fine grain sizes of
ISSN:1359-6454
1873-2453
DOI:10.1016/j.actamat.2003.10.036