Linking structure to fragility in bulk metallic glass-forming liquids Public Deposited

http://ir.library.oregonstate.edu/concern/articles/hd76s1729

Article Copyright 2015 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The published article can be found at:  http://scitation.aip.org/content/aip/journal/apl

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  • 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 T[subscript g]. 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.
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  • Wei, S., Stolpe, M., Gross, O., Evenson, Z., Gallino, I., Hembree, W., ... & Busch, R. (2015). Linking structure to fragility in bulk metallic glass-forming liquids. Applied physics letters, 106(18), 181901. doi:10.1063/1.4919590
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  • description.provenance : Made available in DSpace on 2015-06-23T19:00:46Z (GMT). No. of bitstreams: 1 KruzicJamie MechIndManufEnginLinkingStructureFragility.pdf: 657356 bytes, checksum: cc0e5be66a61c1a64db7618416a34feb (MD5) Previous issue date: 2015-05-04
  • description.provenance : Submitted by Patricia Black (patricia.black@oregonstate.edu) on 2015-06-23T19:00:07Z No. of bitstreams: 1 KruzicJamie MechIndManufEnginLinkingStructureFragility.pdf: 657356 bytes, checksum: cc0e5be66a61c1a64db7618416a34feb (MD5)
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2015-06-23T19:00:46Z (GMT) No. of bitstreams: 1 KruzicJamie MechIndManufEnginLinkingStructureFragility.pdf: 657356 bytes, checksum: cc0e5be66a61c1a64db7618416a34feb (MD5)

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