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Mechanism of Achieving Nanocrystalline AIRu By Ball Milling

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Abstract

We investigated through X- ray diffraction and transmission electron microscopy the crystal refinement of the intermetallic compound AIRu by high- energy ball milling. The deformation process causes a decrease of crystal size to 5–7 rum and an increase of atomic level strain. This deformation is localized in shear bands with a thickness of 0.5 to 1 micron. Within these bands the crystal lattice breaks into small grains with a typical size of 8–14 rum. Further deformation leads to a final nanocrystalline structure with randomly oriented crystallite grains separated by high- angle grain boundaries.

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Authors and Affiliations

  1. Laboratory of Engineering Materials, California Institute of Technology, 91125, Pasadena, CA, USA

    E. Hellstern, H. J. Fecht, C. Garland, W. L. Johnson & W. M. Keck

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  1. E. Hellstern
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  2. H. J. Fecht
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  3. C. Garland
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  4. W. L. Johnson
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  5. W. M. Keck
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Hellstern, E., Fecht, H.J., Garland, C. et al. Mechanism of Achieving Nanocrystalline AIRu By Ball Milling. MRS Online Proceedings Library 132, 137–142 (1988). https://doi.org/10.1557/PROC-132-137

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