ORCID Profile
0000-0003-3051-2480
Current Organisations
Aarhus University
,
RWTH Aachen University
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Publisher: Elsevier BV
Date: 04-2020
Publisher: Elsevier BV
Date: 07-2015
Publisher: AIP Publishing
Date: 04-05-2015
DOI: 10.1063/1.4919590
Abstract: Using in-situ synchrotron X-ray scattering, we show that the structural evolution of various bulk metallic glass-forming liquids can be quantitatively connected to their viscosity behavior in the supercooled liquid near Tg. The structural signature of fragility is identified as the temperature dependence of local dilatation on distinct key atomic length scales. A more fragile behavior results from a more pronounced thermally induced dilatation of the structure on a length scale of about 3 to 4 atomic diameters, coupled with shallower temperature dependence of structural changes in the nearest neighbor environment. These findings shed light on the structural origin of viscous slowdown during undercooling of bulk metallic glass-forming liquids and demonstrate the promise of predicting the properties of bulk metallic glasses from the atomic scale structure.
Publisher: Elsevier BV
Date: 05-2021
Publisher: American Physical Society (APS)
Date: 29-05-2014
No related grants have been discovered for Shuai Wei.