The Influence of Deformation on the Medium-Range Order of a Zr-Based Bulk Metallic Glass Characterized by Variable Resolution Fluctuation Electron Microscopy

2018 ◽  
Author(s):  
Sven Hilke ◽  
Harald Rösner ◽  
David Geissler ◽  
Annett Gebert ◽  
Martin Peterlechner ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Range Order ◽  
Variable Resolution ◽  
Medium Range Order ◽  
Medium Range ◽  
Fluctuation Electron Microscopy

Nanometer-scale Structural Relaxation in Zr-based Bulk Metallic Glass

2007 ◽  
Vol 1048 ◽  
Author(s):  
Jinwoo Hwang ◽  
Hongbo Cao ◽  
Paul M. Voyles
Keyword(s):  
Electron Microscopy ◽  
Differential Scanning Calorimetry ◽  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Range Order ◽  
Nanometer Scale ◽  
Length Scale ◽  
Scanning Calorimetry ◽  
Medium Range Order ◽  
Medium Range

AbstractWe investigated the influence of annealing on the nanometer-scale medium-range order in Zr54Cu38Al8 bulk metallic glass using fluctuation electron microscopy. Fluctuation microscopy experiments probing structure at a length scale of 1 nm show that the as-cast Zr bulk metallic glass contains significant medium range order. That structure is unchanged by annealing at 87% of the glass transition temperature for 24 hours, although that anneal does significantly change the differential scanning calorimetry trace.

Medium-range Order of Zr54Cu38Al8 Bulk Metallic Glass

2014 ◽  
Vol 1649 ◽  
Author(s):  
Pei Zhang ◽  
M. F. Besser ◽  
M. J. Kramer ◽  
P. M. Voyles
Keyword(s):  
Electron Microscopy ◽  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Glass Forming Ability ◽  
Range Order ◽  
Thermally Stable ◽  
Cast State ◽  
Medium Range Order ◽  
Glass Forming ◽  
Medium Range

ABSTRACTWe have previously reported, based on fluctuation electron microscopy (FEM) data, that Zr50Cu45Al5 bulk metallic glass (BMG) contains significant icosahedral and crystal-like medium-range order. Here, we report similar finding for Zr54Cu38Al8 BMG, which is a poorer glass former. Like Zr50Cu45Al5, Zr54Cu38Al8 contains icosahedral and crystal-like structures. In the as-cast state, the crystal-like peak in the FEM data is stronger than icosahedral-like peak. After annealing at 0.83Tg (573 K), the icosahedral-like peak increases, but, unlike Zr50Cu45Al5, the crystal-like peak does not decrease. This tendency toward stronger, more thermally stable crystal-like order may be associated with the poorer glass forming ability of Zr54Cu38Al8.

Hydrogen-Induced Reduction in Medium Range Order of a-Si Thin Films Observed using Fluctuation Electron Microscopy

2004 ◽  
Vol 10 (S02) ◽  
pp. 802-803
Author(s):  
Lakshmi Narayana Nittala ◽  
Sreenivas Jayaraman ◽  
Brent A Sperling ◽  
John R Abelson
Keyword(s):  
Electron Microscopy ◽  
Thin Films ◽  
Range Order ◽  
Medium Range Order ◽  
Medium Range ◽  
Fluctuation Electron Microscopy

Extended abstract of a paper presented at Microscopy and Microanalysis 2004 in Savannah, Georgia, USA, August 1–5, 2004.

Quenched-in quasicrystal medium-range order and pair distribution function study on Zr55Cu35Al10 bulk metallic glass

2006 ◽  
Vol 14 (8-9) ◽  
pp. 888-892 ◽  
Author(s):  
Cang Fan ◽  
T.W. Wilson ◽  
W. Dmowski ◽  
H. Choo ◽  
J.W. Richardson ◽  
...  
Keyword(s):  
Distribution Function ◽  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Pair Distribution Function ◽  
Range Order ◽  
Medium Range Order ◽  
Function Study ◽  
Medium Range

Evidence from Simulations for Orientational Medium Range Order in Fluctuation-Electron-Microscopy Observations of a-Si

2004 ◽  
Vol 10 (S02) ◽  
pp. 820-821 ◽  
Author(s):  
Sanjay V. Khare ◽  
Serge M. Nakhmanson ◽  
Paul M. Voyles ◽  
Pawel Keblinski ◽  
John R. Abelson
Keyword(s):  
Electron Microscopy ◽  
Range Order ◽  
Medium Range Order ◽  
Medium Range ◽  
Fluctuation Electron Microscopy

Extended abstract of a paper presented at Microscopy and Microanalysis 2004 in Savannah, Georgia, USA, August 1–5, 2004.

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