Microstructural evolution in a spray-cast aluminum alloy during equal-channel angular pressing

Nong Gao; Marco J. Starink; Minoru Furukawa; Zenji Horita; Cheng Xu; Terence G. Langdon

doi:10.1016/j.msea.2005.08.075

Microstructural evolution in a spray-cast aluminum alloy during equal-channel angular pressing

Nong Gao, Marco J. Starink, Minoru Furukawa, Zenji Horita, Cheng Xu, Terence G. Langdon

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

27 Citations (Scopus)

Abstract

A spray-cast Al-7034 alloy was processed by equal-channel angular pressing (ECAP) to a total of eight passes at 473 K and the pressed samples were examined using transmission electron microscopy, differential scanning calorimetry and electron back-scatter diffraction. It is shown that the grain size of the alloy is reduced to ∼0.3 μm by ECAP and the high pressures associated with ECAP lead to a fragmentation of the rod-like η-phase. The high temperature of ECAP also produces a precipitation of η-phase. There is an increase in the fraction of high-angle boundaries during the initial passes of ECAP but the fraction of low-angle boundaries remains high even after eight passes.

Original language	English
Pages (from-to)	303-307
Number of pages	5
Journal	Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
Volume	410-411
DOIs	https://doi.org/10.1016/j.msea.2005.08.075
Publication status	Published - Nov 25 2005

All Science Journal Classification (ASJC) codes

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

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10.1016/j.msea.2005.08.075

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title = "Microstructural evolution in a spray-cast aluminum alloy during equal-channel angular pressing",

abstract = "A spray-cast Al-7034 alloy was processed by equal-channel angular pressing (ECAP) to a total of eight passes at 473 K and the pressed samples were examined using transmission electron microscopy, differential scanning calorimetry and electron back-scatter diffraction. It is shown that the grain size of the alloy is reduced to ∼0.3 μm by ECAP and the high pressures associated with ECAP lead to a fragmentation of the rod-like η-phase. The high temperature of ECAP also produces a precipitation of η-phase. There is an increase in the fraction of high-angle boundaries during the initial passes of ECAP but the fraction of low-angle boundaries remains high even after eight passes.",

author = "Nong Gao and Starink, {Marco J.} and Minoru Furukawa and Zenji Horita and Cheng Xu and Langdon, {Terence G.}",

note = "Funding Information: This work was supported in part by a Grant-in-Aid for Scientific Research from the Ministry of Education, Science, Sports and Culture of Japan, in part by the Light Metals Educational Foundation of Japan and in part by the National Science Foundation of the United States under Grant No. DMR-0243331.",

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doi = "10.1016/j.msea.2005.08.075",

language = "English",

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journal = "Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing",

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T1 - Microstructural evolution in a spray-cast aluminum alloy during equal-channel angular pressing

AU - Gao, Nong

AU - Starink, Marco J.

AU - Furukawa, Minoru

AU - Horita, Zenji

AU - Xu, Cheng

AU - Langdon, Terence G.

N1 - Funding Information: This work was supported in part by a Grant-in-Aid for Scientific Research from the Ministry of Education, Science, Sports and Culture of Japan, in part by the Light Metals Educational Foundation of Japan and in part by the National Science Foundation of the United States under Grant No. DMR-0243331.

PY - 2005/11/25

Y1 - 2005/11/25

N2 - A spray-cast Al-7034 alloy was processed by equal-channel angular pressing (ECAP) to a total of eight passes at 473 K and the pressed samples were examined using transmission electron microscopy, differential scanning calorimetry and electron back-scatter diffraction. It is shown that the grain size of the alloy is reduced to ∼0.3 μm by ECAP and the high pressures associated with ECAP lead to a fragmentation of the rod-like η-phase. The high temperature of ECAP also produces a precipitation of η-phase. There is an increase in the fraction of high-angle boundaries during the initial passes of ECAP but the fraction of low-angle boundaries remains high even after eight passes.

AB - A spray-cast Al-7034 alloy was processed by equal-channel angular pressing (ECAP) to a total of eight passes at 473 K and the pressed samples were examined using transmission electron microscopy, differential scanning calorimetry and electron back-scatter diffraction. It is shown that the grain size of the alloy is reduced to ∼0.3 μm by ECAP and the high pressures associated with ECAP lead to a fragmentation of the rod-like η-phase. The high temperature of ECAP also produces a precipitation of η-phase. There is an increase in the fraction of high-angle boundaries during the initial passes of ECAP but the fraction of low-angle boundaries remains high even after eight passes.

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JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

ER -

Microstructural evolution in a spray-cast aluminum alloy during equal-channel angular pressing

Abstract

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