Temperature- and amplitude-dependence of internal friction in Cu-Zn-AI alloys

W. Dejonghe, L. Delaey, R. De Batist, J. Van Humbeeck

    Research outputpeer-review

    Abstract

    Internal friction of Cu-Zn-AI alloys,' which can transform into martensite either by cooling or by stressing, has been measured as a function of temperature and amplitude. The highest internal friction was observed around the transformation temperature. It was shown that the internal friction of the β-phase alloys is low compared with the internal friction of the martensite. By plotting the results in a Granato-Lücke plot, it could be shown that at high amplitude the movement of the martensite plate boundaries is responsible for the high damping and that at low amplitudes only the dislocations contribute to the damping.

    Original languageEnglish
    Pages (from-to)523-530
    Number of pages8
    JournalMetal Science
    Volume11
    Issue number11
    DOIs
    StatePublished - 1977

    Funding

    This work has been supported in part by INCRA (International Copper Research Association, Project No. 238). Two of the authors (W.D. and J.V.H.) are grateful to IWONL (Instituut voor Wetenschappelijk Onderzoek in Nijverheid en Landbouw) for a research grant. Some of the measurements were carried out at the laboratories of SCK (Studiecentrum voor Kernenergie) at Mol, Belgium, and of the Olin Corporation, New Haven, USA, in accordance with the association between SCK and K.U.Leuven and the INCRA project. Metallurgie Hoboken, Belgium, is thanked for supplying copper. The authors also gratefully acknowledge the help of Mr L. Eersel with experimental work and thank Professor P. F. Gobin, Dr G. Guenin, Dr M. Chandrasekaran, Professor K. Sugimoto and Professor A. Deruyttere for valuable discussions.

    FundersFunder number
    Not added238

      ASJC Scopus subject areas

      • General Materials Science
      • Condensed Matter Physics
      • Mechanics of Materials
      • General Engineering
      • Mechanical Engineering

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