Effect of strain rates on the plastic deformation behavior and serrated flow of Zr55.7Cu22.4Ni7.2Al14.7 bulk metallic glass

2021 ◽  
Vol 27 ◽  
pp. 102320
Author(s):  
Kunsen Zhu ◽  
Pingjun Tao ◽  
Chaohan Zhang ◽  
Zhihao Zhao ◽  
Weijian Zhang ◽  
...  
Keyword(s):  
Plastic Deformation ◽  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Deformation Behavior ◽  
Strain Rates ◽  
Serrated Flow ◽  
Plastic Deformation Behavior

Reliability of the plastic deformation behavior of a Zr-based bulk metallic glass

2016 ◽  
Vol 74 ◽  
pp. 25-30 ◽  
Author(s):  
J.J. Fan ◽  
Y.F. Yan ◽  
S.H. Chen ◽  
Chi-Ho Ng ◽  
F.F. Wu ◽  
...  
Keyword(s):  
Plastic Deformation ◽  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Deformation Behavior ◽  
Plastic Deformation Behavior

scholarly journals Rate Dependence of Serrated Flow During Nanoindentation of a Bulk Metallic Glass

2002 ◽  
Vol 17 (7) ◽  
pp. 1651-1654 ◽  
Author(s):  
C. A. Schuh ◽  
T. G. Nieh ◽  
Y. Kawamura
Keyword(s):  
Plastic Deformation ◽  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Plastic Flow ◽  
High Strain ◽  
Flow Behavior ◽  
Strain Rates ◽  
Serrated Flow ◽  
Tip Velocity ◽  
Indentation Strain

Plastic deformation of Pd–40Ni–20P bulk metallic glass (BMG) was investigated by instrumented nanoindentation experiments over a broad range of indentation strain rates. At low rates, the load–displacement curves during indentation exhibited numerous serrations or pop-ins, but these serrations became less prominent as the indentation rate was increased. Using the tip velocity during pop-in as a gauge of serration activity, we found that serrated flow is only significant at indentation strain rates below about 1–10/s. This result suggests a transition in plastic flow behavior at high strain rates, in agreement with prior studies of BMGs under different modes of loading.

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