Deformation Behavior of Ni-Based Metallic Glass Matrix Composites Reinforced by Brass Short-Fibers Synthesized by Warm Extrusion of Powders

2004 ◽  
Vol 449-452 ◽  
pp. 937-940 ◽  
Author(s):  
Dal Hee Bae ◽  
Myung Hyun Lee ◽  
D.H. Kim
Keyword(s):  
Metallic Glass ◽  
Deformation Behavior ◽  
Glass Matrix ◽  
Shear Bands ◽  
Matrix Composites ◽  
Short Fibers ◽  
Macroscopic Plasticity ◽  
Glass Matrix Composites ◽  
Compression Condition ◽  
Warm Extrusion

Deformation behavior of Ni-based metallic glass matrix composites reinforced by short brass-fibers, synthesized by warm extrusion of gas atomized powders, has been investigated under the uniaxial compression condition at room temperature. The brass-fibers are well distributed in the metallic glass matrix and enhanced macroscopic plasticity is observed due to the formation of multiple shear bands, initiated from the interface between brass-fiber and metallic glass matrix, as well as their confinement between the brass-fibers, stemming from the constrained plastic deformation of the reinforcing brass phase.

Mechanical Properties of Metallic Glass Matrix Composites Synthesized by Powder Consolidation as Precursor of Porous Material

2012 ◽  
Vol 152-154 ◽  
pp. 643-646
Author(s):  
Min Ha Lee ◽  
Bum Sung Kim
Keyword(s):  
Mechanical Properties ◽  
Metallic Glass ◽  
Glass Matrix ◽  
Shear Bands ◽  
Matrix Composites ◽  
Ductile Phase ◽  
Powder Consolidation ◽  
Macroscopic Plasticity ◽  
Glass Matrix Composites ◽  
Compression Condition

Mechanical properties of Cu-based metallic glass matrix composites reinforced by ductile fugitive phases, synthesized by warm extrusion of gas atomized powders, has been investigated under the uniaxial compression condition at room temperature. The ductile fugitive phases are well distributed in the metallic glass matrix and enhanced macroscopic plasticity is observed due to the formation of multiple shear bands, initiated from the interface between ductile fugitive phase and metallic glass matrix, as well as their confinement between the reinforcements, stemming from the constrained plastic deformation of the reinforcing ductile phase.

Synthesis of Ni-based bulk metallic glass matrix composites containing ductile brass phase by warm extrusion of gas atomized powders

2003 ◽  
Vol 18 (9) ◽  
pp. 2101-2108 ◽  
Author(s):  
M. H. Lee ◽  
D. H. Bae ◽  
D. H. Kim ◽  
D. J. Sordelet
Keyword(s):  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Glass Matrix ◽  
Volume Fraction ◽  
Shear Bands ◽  
Second Phase ◽  
Matrix Composites ◽  
Ductile Phase ◽  
Glass Matrix Composites ◽  
Warm Extrusion

To prevent catastrophic failure by propagating highly localized shear bands and to overcome the limited dimension of metallic glass, centimeter-scale Ni59Zr20Ti16Si2Sn3 bulk metallic glass matrix composites were fabricated by warm extrusion of a mixture of gas-atomized fully amorphous powders and ductile brass powders. After consolidation, the composite retained the fully amorphous matrix found in the gas-atomized powder combined with the brass second phase. The glass-transition and crystallization temperatures of the extruded material were the same as those of the starting powders. The confined ductile brass phase enabled the bulk metallic glass matrix composites to deform plastically under uniaxial compression at room temperature. The combination of strength and ductility in the inherently brittle Ni-based monolithic materials could be obtained by introducing a ductile phase in the bulk metallic glass matrix. However, control of the volume fraction and distribution of the ductile brass phase was important for the proper combination of the strength and plasticity.

scholarly journals An Analytical Method for Studying the Stress-Strain Relations of Bulk Metallic Glass Matrix Composites under Tension

2018 ◽  
Vol 27 (6) ◽  
pp. 096369351802700
Author(s):  
Yunpeng Jiang
Keyword(s):  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Analytical Method ◽  
Glass Matrix ◽  
Shear Bands ◽  
Matrix Composites ◽  
Stress Strain ◽  
Glass Matrix Composites ◽  
Softening Stage

In this contribution, an analytical model was formulated to predict the tensile stress-strain relations of bulk metallic glass matrix composites (BMGCs) based on Weng's theoretical frame for dual-ductile composites. For in-situ BMGCs, BMG matrix also exhibits the elastic-plastic deform response as well as the dendrite phases during the stretching. The shear bands are regarded as Mode-I cracks, and whereby the strain-softening stage in the stress-strain curves can be well reflected. Furthermore, multi-particle representative volume element based FEM modelling was employed to clearly explain the failure mechanisms in BMGCs as a necessary complement. The predictions are in reasonable agreement with the experimental results. The presented analytical method will shed some light on optimizing the microstructures, and is of convenience in the engineering applications.

Elastic deformation behavior of CuZrAlNb metallic glass matrix composites with different crystallization degrees

2017 ◽  
Vol 24 (4) ◽  
pp. 430-434 ◽  
Author(s):  
Wei-zhong Liang ◽  
Zhi-liang Ning ◽  
Gang Wang ◽  
Zhi-jie Kang ◽  
Hai-chao Sun ◽  
...  
Keyword(s):  
Metallic Glass ◽  
Elastic Deformation ◽  
Deformation Behavior ◽  
Glass Matrix ◽  
Matrix Composites ◽  
Glass Matrix Composites

Modeling deformation behavior of Cu–Zr–Al bulk metallic glass matrix composites

2009 ◽  
Vol 95 (10) ◽  
pp. 101906 ◽  
Author(s):  
S. Pauly ◽  
G. Liu ◽  
G. Wang ◽  
J. Das ◽  
K. B. Kim ◽  
...  
Keyword(s):  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Deformation Behavior ◽  
Glass Matrix ◽  
Matrix Composites ◽  
Glass Matrix Composites

Nanocrystallization at shear bands in bulk metallic glass matrix composites

2008 ◽  
Vol 58 (8) ◽  
pp. 651-654 ◽  
Author(s):  
Min Ha Lee ◽  
Dong Hyun Bae ◽  
Do Hyang Kim ◽  
Won Tae Kim ◽  
Daniel J. Sordelet ◽  
...  
Keyword(s):  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Glass Matrix ◽  
Shear Bands ◽  
Matrix Composites ◽  
Glass Matrix Composites

Shear localization of nanoscale W in metallic glass composites

2006 ◽  
Vol 21 (2) ◽  
pp. 492-499 ◽  
Author(s):  
Min Ha Lee ◽  
Daniel J. Sordelet
Keyword(s):  
Metallic Glass ◽  
Glass Matrix ◽  
Shear Bands ◽  
Amorphous Structure ◽  
Shear Localization ◽  
Composite Powders ◽  
Glass Composites ◽  
Macroscopic Plasticity ◽  
Warm Extrusion ◽  
Glass Powders

High-density tungsten/metallic glass composites were fabricated by warm extrusion of two different powders. The first powder was a physical blend of −45 μm tungsten and Hf-based metallic glass powders and produced a relatively coarse distribution of tungsten particles within a continuous metallic glass matrix. The second powder was synthesized by mechanical milling the −45 μm tungsten and Hf-based metallic glass powders into composite particles composed of 20–500-nm layers of tungsten and metallic glass. The amorphous structure of the starting glass powders did not change during milling. Some macroscopic plasticity during compression testing was observed due to the formation of multiple shear bands at the interface between the coarse tungsten particles and the metallic glass matrix in the composite produced from blended powders. In contrast, shear localization without a decrease in strength occurred uniformly throughout the nano-grained tungsten and metallic glass phases in the sample obtained from extruded composite powders.

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