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Title: Variation of Hardness and Modulus across thickness of Zr-Cu-Al Metallic Glass Ribbons

Source: Mater. Res. Soc. Symp. Proc. Volume 1520, 2012; 6 p.

Author(s)Melgarejo, Z. Humberto; Jakes, J.E.; Hwang, J.; Kalay, Y.E.; Kramer, M.J.; Voyles, P.M.; Stone, D.S.

Publication Year: 2012  View PDF »

Category: Conference Proceedings
Associated Research Project(s):   FPL-4707-2B

Abstract: We investigate through-thickness hardness and modulus of Zr50Cu45Al5 metallic glass melt-spun ribbon. Because of their thinness, the ribbons are challenging to measure, so we employ a novel nanoindentation based-method to remove artifacts caused by ribbon flexing and edge effects. Hardness and modulus vary approximately linearly across the thickness but, unlike bulk ingots, the side of the ribbon that cooled most quickly had the highest hardness and modulus. This “inverse” variation may be caused by the fast-moving solidification front, which might conceivably, for instance, push free volume in advance of it. Annealing near Tg causes both hardness and modulus to increase and become more uniform across the thickness.

Keywords: nanoindentation; structure-property relationships; metallic glass

Publication Review Process: Formally Refereed

File size: 243 kb(s)

Date posted: 05/14/2013

This publication is also viewable on Treesearch:  view
RITS Product ID: 63854
Current FPL Scientist associated with this product
Jakes, Joseph
Research Materials Engineer
  

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