Microstructural evolution and tensile properties of an in-situ TiZr-based bulk metallic glass matrix composite after hot-pressing deformation in its supercooled liquid region

2018 ◽  
Vol 768 ◽  
pp. 415-424 ◽  
Author(s):  
D.Q. Ma ◽  
S.Q. Yuan ◽  
X.Z. Ma ◽  
J. Li ◽  
D. Zhang ◽  
...  
Keyword(s):  
Metallic Glass ◽  
Microstructural Evolution ◽  
Hot Pressing ◽  
Glass Matrix ◽  
Supercooled Liquid ◽  
Supercooled Liquid Region ◽  
Liquid Region ◽  
Glass Matrix Composite ◽  
Metallic Glass Matrix Composite

Homogeneous Flow of In Situ Bulk Metallic Glass Matrix Composite

2007 ◽  
Vol 551-552 ◽  
pp. 561-567
Author(s):  
K.C. Chan ◽  
Q. Chen ◽  
L. Liu
Keyword(s):  
Metallic Glass ◽  
Strain Rate ◽  
Bulk Metallic Glass ◽  
Supercooled Liquid ◽  
Supercooled Liquid Region ◽  
Liquid Region ◽  
Free Volume Theory ◽  
Glass Matrix Composite ◽  
Metallic Glass Matrix Composite

The compressive deformation behavior of as-cast Zr55.9Cu18.6Ta8Al7.5Ni10 Bulk Metallic Glass (BMG) composite with micro-scale particles of Ta-rich solid solution embedded in an amorphous matrix was investigated in the supercooled liquid region. It was found that the apparent viscosity of the BMG is dependent on temperature and strain rate. A deviation from a Newtonian behavior was observed at high strain rate and low temperature. The experimental results can be described by a master curve based on a stretched exponential function and the free volume theory. The structural state and the thermal ability of the BMG composite after deformation are also discussed in the paper.

In situ spherical B2 CuZr phase reinforced ZrCuNiAlNb bulk metallic glass matrix composite

2010 ◽  
Vol 25 (6) ◽  
pp. 1159-1163 ◽  
Author(s):  
Jinmin Liu ◽  
Haifeng Zhang ◽  
Huameng Fu ◽  
Zhuang-Qi Hu ◽  
Xiaoguang Yuan
Keyword(s):  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Matrix Composite ◽  
Glass Matrix ◽  
Shear Bands ◽  
Glass Matrix Composite ◽  
Mold Casting ◽  
Metallic Glass Matrix Composite ◽  
Nb Addition

In situ microlevel spherical B2 CuZr phase reinforced Zr49.5Cu36.45Ni4.05Al9Nb1 bulk metallic glass matrix composite was prepared successfully by the copper mold casting method. It was found that mechanical properties of Zr50.5Cu36.45Ni4.05Al9 alloy were improved largely due to the Nb addition. The room-temperature compressive fracture strength and plastic strain for Zr49.5Cu36.45Ni4.05Al9Nb1 rod with a diameter of 5 mm reaches 2037 MPa and 8%, respectively. The improvements are attributed to the precipitation of the spherical B2 CuZr phase distributed uniformly in amorphous matrix, which effectively hampers the propagation of shear bands by deflecting them at the interface and by a multiplication mechanism.

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