Atomic Dynamics of Bulk Metallic Glasses under Tensil Stress
Abstract: In the application of bulk metallic glasses (BMG) their mechanical properties are the most important. They show an extreme strength at ambient temperature, but fail abruptly when yield is reached. This catastrophic yield is most likely related to their heterogeneous structure, consisting of soft regions, to our present knowledge, in which the instability is initiated, and a network of hard regions surrounding them. In our experiment we have shown that the deformation of this heterogeneous atomic structure is reflected in a change of the Generalized Vibrational Density Of States (GVDOS) and that the stress-temperature scaling obviously also applies to the atomic dynamic of glasses. We now want to investigate in detail the beginning of this change of the GVDOS and whether any completely elastic strain region exists in BMGs.
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SAMWER Konrad; KOZA Michael Marek and SUCK Jens Boie. (2016). Atomic Dynamics of Bulk Metallic Glasses under Tensil Stress. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.6-05-971
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