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Tem Observation of Precipitates in Ag-Added Al-Mg-Si Alloys

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ICAA13 Pittsburgh

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Abstract

The influence of addition of the small amount of transition metals to Al-Mg-Si alloy had reported by many researchers. In the previous our work, β′ phase in alloys Al — 1.0 mass% Mg2Si -0.5 mass% Ag (Ag-addition) and Al -1.0 mass% Mg2Si (base) were investigated by high resolution transmission electron microscopy (HRTEM) and selected area electron diffraction (SAED), in order to understand the effect of Ag. In addition, the distribution of Ag was investigated by energy filtered mapping and high annular angular dark field scanning transmission electron microscopy (HAADF-STEM). One Ag-containing atomic column was observed per β’ unit cell, and the unit cell symmetry is slightly changed as compared with the Ag-free β’. In this work, the microstructure of G.P. zone and β’’ phase was investigated by TEM observation, which were formed before β’ phase. The deformed sample by high pressure torsion (HPT) technique before aging was also investigated to understand its effect for aging in this alloy.

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Authors and Affiliations

  1. Graduate School of Science and Engineering for Education, University of Toyama, Japan

    Takeshi Nagai

  2. Graduate School of Science and Engineering for Research, University of Toyama, Japan

    Kenji Matsuda & Tokimasa Kawabata

  3. Graduate School of Science and Engineering, Tohoku University, Japan

    Junya Nakamura

  4. Department of Synthesis and Properties, SINTEF Materials and Chemistry, 7465, Trondheim, Norway

    Calin Marioara & Sigmund J. Andersen

  5. Department of Physics, Norwegian University of Science and Technology, N-7491, Trondheim, Norway

    Randi Holmestad

  6. Graduate School of Science and Engineering, Yokohama National University, Japan

    Shoichi Hirosawa & Zenji Horita

  7. Graduate School of Science and Engineering, Kyushu University, Japan

    Daisuke Terada

  8. Graduate School of Science and Engineering, Kyoto University, Japan

    Susumu Ikeno

Authors
  1. Takeshi Nagai
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  2. Kenji Matsuda
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  3. Junya Nakamura
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  4. Tokimasa Kawabata
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  5. Calin Marioara
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  6. Sigmund J. Andersen
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  7. Randi Holmestad
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  8. Shoichi Hirosawa
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  9. Zenji Horita
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  10. Daisuke Terada
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  11. Susumu Ikeno
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Editor information

Editors and Affiliations

  1. Alcoa Technical Center, Pittsburgh, PA, USA

    Hasso Weiland (Technical Fellow) (Technical Fellow)

  2. Carnegie Mellon University, USA

    Anthony D. Rollett (Professor of Materials Science & Engineering, Chair of the International Committee) (Professor of Materials Science & Engineering, Chair of the International Committee)

  3. Alcoa Technical Center, USA

    William A. Cassada (Director) (Director)

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© 2012 TMS (The Minerals, Metals & Materials Society)

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Nagai, T. et al. (2012). Tem Observation of Precipitates in Ag-Added Al-Mg-Si Alloys. In: Weiland, H., Rollett, A.D., Cassada, W.A. (eds) ICAA13 Pittsburgh. Springer, Cham. https://doi.org/10.1007/978-3-319-48761-8_189

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