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Precipitation in an Al-Mg-Ge Alloy

  • Conference paper
EMC 2008 14th European Microscopy Congress 1–5 September 2008, Aachen, Germany

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Abstract

The precipitation in an Al-0.87 at% Mg-0.43 at% Ge alloy has been investigated using high-resolution transmission electron microscopy (HRTEM) and annular dark field scanning TEM (ADF-STEM). This work is a continuation of previous studies on Al-Mg-Si-(Cu) alloys, which are industrially relevant due to their superior mechanical properties such as high strength/weight ratio. The hardness increase is generated by the precipitation of nanometre-sized metastable phases from solid solution during artificial ageing. Most precipitates have had their crystal structures solved by our group using a combination of quantitative electron diffraction, first-principles methods and HRTEM [1–3]. It has been shown that all phases are structurally related through a near-hexagonal Si network having sub-cell dimensions a=b=0.405 nm, c=0.405 nm [3].

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References

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Author information

Authors and Affiliations

  1. Department of Physics, Norwegian University of Science and Technology, 7491, Trondheim, Norway

    R. Bjorge & R. Holmestad

  2. SINTEF Materials and Chemistry, 7465, Trondheim, Norway

    C. D. Marioara & S. J. Andersen

Authors
  1. R. Bjorge
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  2. C. D. Marioara
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  3. S. J. Andersen
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  4. R. Holmestad
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Editor information

Editors and Affiliations

  1. Central Facility for Electron Microscopy, RWTH Aachen, Ahornstr. 55, 52074, Aachen, Germany

    Silvia Richter  & Alexander Schwedt  & 

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© 2008 Springer-Verlag Berlin Heidelberg

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Bjorge, R., Marioara, C.D., Andersen, S.J., Holmestad, R. (2008). Precipitation in an Al-Mg-Ge Alloy. In: Richter, S., Schwedt, A. (eds) EMC 2008 14th European Microscopy Congress 1–5 September 2008, Aachen, Germany. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-85226-1_198

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