scholarly journals Martensitic Transformation and Plastic Deformation of TiCuNiZr-Based Bulk Metallic Glass Composites

Metals ◽  
2018 ◽  
Vol 8 (3) ◽  
pp. 196 ◽  
Author(s):  
Honggang Sun ◽  
Kaikai Song ◽  
Xiaoliang Han ◽  
Hui Xing ◽  
Xuelian Li ◽  
...  
Keyword(s):  
Plastic Deformation ◽  
Martensitic Transformation ◽  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Glass Composites ◽  
Bulk Metallic Glass Composites

Effect of B2 Phase Transformation on the Mechanical Behavior of CuZr-Based Bulk Metallic Glass Composites

2017 ◽  
Vol 898 ◽  
pp. 672-678
Author(s):  
Ran Wei ◽  
Juan Tao ◽  
Shi Lei Liu ◽  
Guo Wen Sun ◽  
Shuai Guo ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Phase Transformation ◽  
Martensitic Transformation ◽  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Lower Yield ◽  
Glass Composites ◽  
Bulk Metallic Glass Composites ◽  
Lower Yield Strength ◽  
B2 Phase

The mechanical behavior of CuZr-based bulk metallic glass composites with different B2-CuZr phase transformation ability was investigated. The B2 phase transformation is conducive to enhance the mechanical properties of CuZr-based bulk metallic glass composites. The mechanical properties of the austenitic B2 phase specimens were also studied to understand the mechanism of phase transformation effect. It was found that the B2 phase with martensitic transformation exhibits lower yield strength and stronger work-hardening capability than the B2 phase without martensitic transformation. Thus, the phase transformation effect of B2-CuZr phase, accompanying with its lower yield strength and stronger work-hardening capability, is the main reason for the CuZr-based bulk metallic glass composites possess outstanding mechanical properties.

scholarly journals Brittle-Ductile Transition in Laser 3D Printing of Fe-Based Bulk Metallic Glass Composites

Metals ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 78 ◽  
Author(s):  
Fei Xie ◽  
Qingjun Chen ◽  
Jiwen Gao
Keyword(s):  
Plastic Deformation ◽  
3D Printing ◽  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Volume Fraction ◽  
Elastic Recovery ◽  
Plasticity Index ◽  
Glass Composites ◽  
Bulk Metallic Glass Composites ◽  
Brittle Ductile Transition

The effects of the α-Fe phase on mechanical properties and cracking of laser 3D printing Fe-based bulk metallic glass composites were investigated. The elastic recovery and plasticity index were characterized by nanoindentation. As the volume fraction of the α-Fe phase increases from 23.66% to 52.38%, the elastic modulus of printed samples suddenly drops. The samples exhibit a lower deformation resistance, and the plasticity index increases gradually. When the volume fraction of the α-Fe phase is 67.84%, the interaction between the α-Fe phase and matrix phase is smaller during expansion shrinkage. As a result, cracking is easy to initiate, which leads to the highest crack rate of the printed sample. However, as the volume fraction of the α-Fe phase increases to 83.31%, the hard brittle phase was sandwiched between the α-Fe phases similar to the finger structure plays key role in the plastic deformation. The plastic deformation releases large amounts of stress concentrated at the boundary and suppresses crack formation.

scholarly journals Microstructure and Mechanical Properties of Cu-Ni-Zr-Ti Bulk Metallic Glass Composites by Spark Plasma Sintering

2021 ◽  
Vol 59 (5) ◽  
pp. 281-288
Author(s):  
Da Woon Shin ◽  
Hong Min ◽  
Jin Kyu Lee
Keyword(s):  
Plastic Deformation ◽  
Shear Band ◽  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Glass Matrix ◽  
Shear Bands ◽  
Glass Composites ◽  
Bulk Metallic Glass Composites ◽  
Plasma Sintering ◽  
Spark Plasma

In the present study, Cu54Ni6Zr22Ti18 bulk metallic glass composites were developed by spark plasma sintering(SPS) using gas atomized Cu54Ni6Zr22Ti18 metallic glass powders and Ta powders. Metallic glass composites with Ta phase were fabricated by SPS. The successful consolidation of Cu54Ni6Zr22Ti18 metallic glass matrix composites with the Ta phase was achieved through the strong bonding due to the plastic deformation of the Ta powder and the super-plastic behavior of the metallic glass powder in the supercooled liquid state during SPS. The deformed Ta phases were well distributed in the Cu54Ni6Zr22Ti18 metallic glass matrix. The compressive fracture strength and total strain were 1770 Mpa and 10.2%, respectively, for the Cu54Ni6Zr22Ti18 bulk metallic glass composite with 40 wt% Ta phases. The uniformly dispersed deformed Ta phase in the Cu54Ni6Zr22Ti18 metallic glass matrix effectively impedes the propagation of the first shear band and generates a second shear band, causing a crossing of the shear bands, resulting in an improvement in plastic strain. This increase in plastic deformation is related to the fact that the deformed Ta phase, uniformly distributed in the Cu54Ni6Zr22Ti18 metallic glass matrix, acts as a source of shear bands and at the same time effectively suppresses the movement of the shear bands, dispersing the stress and causing wide plastic deformation.

scholarly journals Deformation-Induced Martensitic Transformation in Cu-Zr-Zn Bulk Metallic Glass Composites

Metals ◽  
2015 ◽  
Vol 5 (4) ◽  
pp. 2134-2147 ◽  
Author(s):  
Dianyu Wu ◽  
Kaikai Song ◽  
Chongde Cao ◽  
Ran Li ◽  
Gang Wang ◽  
...  
Keyword(s):  
Martensitic Transformation ◽  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Glass Composites ◽  
Bulk Metallic Glass Composites

Shear fracture in bulk metallic glass composites

2021 ◽  
pp. 116963
Author(s):  
Devashish Rajpoot ◽  
R. Lakshmi Narayan ◽  
Long Zhang ◽  
Punit Kumar ◽  
Haifeng Zhang ◽  
...  
Keyword(s):  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Shear Fracture ◽  
Glass Composites ◽  
Bulk Metallic Glass Composites
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