Effect of strain hardening and volume fraction of crystalline phase on strength and ductility of bulk metallic glass composites

2016 ◽  
Vol 124 ◽  
pp. 51-55 ◽  
Author(s):  
Mayuresh K. Shete ◽  
I. Singh ◽  
R. Narasimhan ◽  
U. Ramamurty
Keyword(s):  
Metallic Glass ◽  
Strain Hardening ◽  
Bulk Metallic Glass ◽  
Crystalline Phase ◽  
Volume Fraction ◽  
Glass Composites ◽  
Bulk Metallic Glass Composites ◽  
Strength And Ductility

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.

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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