Damage effect on the fracture toughness of nodular cast iron: Part I. Damage characterization and plastic flow stress modeling

1997 ◽  
Vol 28 (11) ◽  
pp. 2245-2254 ◽  
Author(s):  
M. J. Dong ◽  
C. Prioul ◽  
D. François
Keyword(s):  
Fracture Toughness ◽  
Cast Iron ◽  
Flow Stress ◽  
Plastic Flow ◽  
Nodular Cast Iron ◽  
Damage Effect ◽  
Iron Part ◽  
Cast Iron Part ◽  
Damage Characterization ◽  
Plastic Flow Stress

scholarly journals Damage Effect on the Fracture Toughness of Nodular Cast Iron

1997 ◽  
Vol 4-5 ◽  
pp. 181-188 ◽  
Author(s):  
M.J. Dong ◽  
B. Tie ◽  
A.S. Béranger ◽  
C. Prioul ◽  
Dominique François
Keyword(s):  
Fracture Toughness ◽  
Cast Iron ◽  
Nodular Cast Iron ◽  
Damage Effect

scholarly journals Damage Effect in the Fracture Toughness of Nodular Cast Iron

1996 ◽  
Vol 06 (C6) ◽  
pp. C6-65-C6-74 ◽  
Author(s):  
M. J. Dong ◽  
C. Berdin ◽  
A. S. Beranger ◽  
C. Prioul
Keyword(s):  
Fracture Toughness ◽  
Cast Iron ◽  
Nodular Cast Iron ◽  
Damage Effect

Strain-rate dependence of hardening and softening in compression of a bulk-metallic glass

2007 ◽  
Vol 22 (10) ◽  
pp. 2655-2658 ◽  
Author(s):  
W.H. Jiang ◽  
F.X. Liu ◽  
F. Jiang ◽  
K.Q. Qiu ◽  
H. Choo ◽  
...  
Keyword(s):  
Flow Stress ◽  
Metallic Glass ◽  
Strain Rate ◽  
Bulk Metallic Glass ◽  
Plastic Flow ◽  
Shear Banding ◽  
Constant Strain Rate ◽  
Rate Dependence ◽  
Strain Rate Dependence ◽  
Plastic Flow Stress

We investigated the effect of strain rate on the plastic-flow stress of a Zr-based bulk-metallic glass in quasistatic compression. The results indicate that the plastic-flow stress is dependent on the strain rate: an increase in the strain rate leads to a decrease in the plastic-flow stress, and vice versa. However, simply loading, unloading, and reloading at a constant strain rate do not change the plastic-flow stress. This strain-rate dependence of the plastic-flow stress may be related to shear-banding operations.

Plastic Flow Stress and Constitutive Model for H96 Brass Alloy

2015 ◽  
Vol 782 ◽  
pp. 130-136 ◽  
Author(s):  
Ping Zhou ◽  
Wei Guo Guo ◽  
Hai Hui Wu
Keyword(s):  
Flow Stress ◽  
Constitutive Model ◽  
Plastic Flow ◽  
Split Hopkinson Pressure Bar ◽  
Testing Machine ◽  
Experimental Results ◽  
Dynamic Strain ◽  
Strain Rates ◽  
Brass Alloy ◽  
Plastic Flow Stress

To explore the thermo-mechanical response of H96 brass alloy, the quasi-static (universal-testing machine) and dynamic (the split Hopkinson pressure bar apparatus) uniaxial compression experiments have been performed under the temperatures from 293 K to 873 K and the strain rates from 0.001 s-1 to 6000 s-1, and the strains over 60% are obtained. Results show that, H96 brass alloy has strong strain hardening behavior, and it becomes weaker with the increasing temperature. In addition, this alloy is sensitive to strain rates; and, it has temperature sensitivity, the dynamic strain aging occurs at the temperature of 473 K and a quasi-static strain rate of 0.001 s-1. Based on the thermal activation dislocation mechanism, paralleled with the experimental results, a plastic flow constitutive model with the physical conception is developed. The model is suitable to predict the plastic flow stress at different temperatures and strain rates. According to comparing results, the model predictions are in good agreement with the experimental results.

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