Design of Bulk Metallic Glasses and Glass Matrix Composites Near Intermetallic Composition by the Principle of Competitive Growth

2016 ◽  
Vol 58 (7-8) ◽  
pp. 483-486
Author(s):  
G. Z. Ma ◽  
D. Chen
Keyword(s):  
Metallic Glasses ◽  
Glass Matrix ◽  
Bulk Metallic Glasses ◽  
Matrix Composites ◽  
Competitive Growth ◽  
Glass Matrix Composites

Mechanical properties of bulk metallic glasses and composites

2007 ◽  
Vol 22 (2) ◽  
pp. 285-301 ◽  
Author(s):  
J. Eckert ◽  
J. Das ◽  
S. Pauly ◽  
C. Duhamel
Keyword(s):  
Mechanical Properties ◽  
Metallic Glasses ◽  
Shear Bands ◽  
Bulk Metallic Glasses ◽  
Second Phase ◽  
Matrix Composites ◽  
Future Directions ◽  
Glassy Alloys ◽  
Spatially Inhomogeneous ◽  
Glass Matrix Composites

The development of bulk metallic glasses and composites for improving the mechanical properties has occurred with the discovery of many ductile metallic glasses and glass matrix composites with second phase dispersions with different length scales. This article reviews the processing, microstructure development, and resulting mechanical properties of Zr-, Ti-, Cu-, Mg-, Fe-, and Ni-based glassy alloys and also considers the superiority of composite materials containing different phases for enhancing the strength, ductility, and toughness, even leading to a “work-hardening-like” behavior. The morphology, shape, and length scale of the second phase dispersions are crucial for the delocalization of shear bands. The article concludes with some comments regarding future directions of the investigations of spatially inhomogeneous metallic glasses.

scholarly journals Synthesis of Bulk Zr48Cu36Al8Ag8 Metallic Glass by Hot Pressing of Amorphous Powders

2021 ◽  
Vol 5 (1) ◽  
pp. 23
Author(s):  
Tianbing He ◽  
Nevaf Ciftci ◽  
Volker Uhlenwinkel ◽  
Sergio Scudino
Keyword(s):  
Metallic Glass ◽  
Metallic Glasses ◽  
Flow Behavior ◽  
Matrix Composites ◽  
Powder Consolidation ◽  
Low Viscosity ◽  
Flash Annealing ◽  
Amorphous Powders ◽  
Temperature Window ◽  
Glass Matrix Composites

The critical cooling rate necessary for glass formation via melt solidification poses inherent constraints on sample size using conventional casting techniques. This drawback can be overcome by pressure-assisted sintering of metallic glass powders at temperatures above the glass transition, where the material shows viscous-flow behavior. Partial crystallization during sintering usually exacerbates the inherent brittleness of metallic glasses and thus needs to be avoided. In order to achieve high density of the bulk specimens while avoiding (or minimizing) crystallization, the optimal combination between low viscosity and long incubation time for crystallization must be identified. Here, by carefully selecting the time–temperature window for powder consolidation, we synthesized highly dense Zr48Cu36Ag8Al8 bulk metallic glass (BMG) with mechanical properties comparable with its cast counterpart. The larger ZrCu-based BMG specimens fabricated in this work could then be post-processed by flash-annealing, offering the possibility to fabricate monolithic metallic glasses and glass–matrix composites with enhanced room-temperature plastic deformation.

Formation of crystalline phase in the glass matrix of Zr-Co-Al glass-matrix composites and its effect on their mechanical properties

2017 ◽  
Vol 23 (6) ◽  
pp. 1216-1222 ◽  
Author(s):  
Woo Chul Kim ◽  
Kang Chul Kim ◽  
Min Young Na ◽  
Seok Hoan Jeong ◽  
Won Tae Kim ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Crystalline Phase ◽  
Glass Matrix ◽  
Matrix Composites ◽  
Glass Matrix Composites
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