The effect of severe plastic deformation on precipitation in supersaturated Al-Zn-Mg alloys

J. Gubicza; I. Schiller; N. Q. Chinh; J. Illy; Z. Horita; T. G. Langdon

doi:10.1016/j.msea.2007.01.001

The effect of severe plastic deformation on precipitation in supersaturated Al-Zn-Mg alloys

J. Gubicza, I. Schiller, N. Q. Chinh, J. Illy, Z. Horita, T. G. Langdon

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

184 Citations (Scopus)

Abstract

Experiments were conducted to examine the influence of equal-channel angular pressing (ECAP) on the development of precipitation microstructures in two supersaturated Al-Zn-Mg alloys. The results show that ECAP leads to an ultrafine grain size with finely dispersed η precipitates. It is concluded that processing by ECAP promotes the precipitation processes because dislocations act as nucleation sites for precipitates. Spherical precipitates were observed in the alloys processed by ECAP whereas long rod-like precipitates were also observed after ageing without ECAP. Calculations show the yield strengths estimated from the characteristic parameters of the precipitation microstructure are in good agreement with the values determined by mechanical testing.

Original language	English
Pages (from-to)	77-85
Number of pages	9
Journal	Materials Science and Engineering A
Volume	460-461
DOIs	https://doi.org/10.1016/j.msea.2007.01.001
Publication status	Published - Jul 15 2007

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.2007.01.001

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title = "The effect of severe plastic deformation on precipitation in supersaturated Al-Zn-Mg alloys",

abstract = "Experiments were conducted to examine the influence of equal-channel angular pressing (ECAP) on the development of precipitation microstructures in two supersaturated Al-Zn-Mg alloys. The results show that ECAP leads to an ultrafine grain size with finely dispersed η precipitates. It is concluded that processing by ECAP promotes the precipitation processes because dislocations act as nucleation sites for precipitates. Spherical precipitates were observed in the alloys processed by ECAP whereas long rod-like precipitates were also observed after ageing without ECAP. Calculations show the yield strengths estimated from the characteristic parameters of the precipitation microstructure are in good agreement with the values determined by mechanical testing.",

author = "J. Gubicza and I. Schiller and Chinh, {N. Q.} and J. Illy and Z. Horita and Langdon, {T. G.}",

note = "Funding Information: The work of JG and NQC was supported by the Hungarian Scientific Research Fund, OTKA, Grant Nos. F-047057, T-043247 and T-038048. One of the authors was supported by the National Science Foundation of the United States under Grant No. DMR-0243331 (TGL). JG is grateful for the support of a Bolyai Janos Research Scholarship of the Hungarian Academy of Sciences. ZH was supported by the Light Metals Educational Foundation of Japan. Copyright: Copyright 2008 Elsevier B.V., All rights reserved.",

year = "2007",

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doi = "10.1016/j.msea.2007.01.001",

language = "English",

volume = "460-461",

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T1 - The effect of severe plastic deformation on precipitation in supersaturated Al-Zn-Mg alloys

AU - Gubicza, J.

AU - Schiller, I.

AU - Chinh, N. Q.

AU - Illy, J.

AU - Horita, Z.

AU - Langdon, T. G.

N1 - Funding Information: The work of JG and NQC was supported by the Hungarian Scientific Research Fund, OTKA, Grant Nos. F-047057, T-043247 and T-038048. One of the authors was supported by the National Science Foundation of the United States under Grant No. DMR-0243331 (TGL). JG is grateful for the support of a Bolyai Janos Research Scholarship of the Hungarian Academy of Sciences. ZH was supported by the Light Metals Educational Foundation of Japan. Copyright: Copyright 2008 Elsevier B.V., All rights reserved.

PY - 2007/7/15

Y1 - 2007/7/15

N2 - Experiments were conducted to examine the influence of equal-channel angular pressing (ECAP) on the development of precipitation microstructures in two supersaturated Al-Zn-Mg alloys. The results show that ECAP leads to an ultrafine grain size with finely dispersed η precipitates. It is concluded that processing by ECAP promotes the precipitation processes because dislocations act as nucleation sites for precipitates. Spherical precipitates were observed in the alloys processed by ECAP whereas long rod-like precipitates were also observed after ageing without ECAP. Calculations show the yield strengths estimated from the characteristic parameters of the precipitation microstructure are in good agreement with the values determined by mechanical testing.

AB - Experiments were conducted to examine the influence of equal-channel angular pressing (ECAP) on the development of precipitation microstructures in two supersaturated Al-Zn-Mg alloys. The results show that ECAP leads to an ultrafine grain size with finely dispersed η precipitates. It is concluded that processing by ECAP promotes the precipitation processes because dislocations act as nucleation sites for precipitates. Spherical precipitates were observed in the alloys processed by ECAP whereas long rod-like precipitates were also observed after ageing without ECAP. Calculations show the yield strengths estimated from the characteristic parameters of the precipitation microstructure are in good agreement with the values determined by mechanical testing.

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

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ER -

The effect of severe plastic deformation on precipitation in supersaturated Al-Zn-Mg alloys

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