Evaluation of activation energy for dynamic strain aging process in 316L(N)/316(N) SS weld joints

2008 ◽  
Vol 61 (4) ◽  
pp. 301-306 ◽  
Author(s):  
M. Shanmugavel ◽  
M. Nandagopal ◽  
R. Sandhya ◽  
K. Bhanu Sankara Rao ◽  
R. Gnanamoorthy
Keyword(s):  
Activation Energy ◽  
Dynamic Strain Aging ◽  
Strain Aging ◽  
Aging Process ◽  
Dynamic Strain ◽  
Weld Joints

Study on Dynamic Strain Aging Phenomenon of AZ91D Magnesium Alloy

2012 ◽  
Vol 472-475 ◽  
pp. 2962-2965 ◽  
Author(s):  
Na Lin ◽  
Kai Huai Yang ◽  
Shao Feng Zeng ◽  
Wen Zhe Chen
Keyword(s):  
Activation Energy ◽  
Solid Solution ◽  
Magnesium Alloy ◽  
Dynamic Strain Aging ◽  
Strain Aging ◽  
Solution Treatment ◽  
Dynamic Strain ◽  
Strain Rates ◽  
Az91d Magnesium Alloy ◽  
Solute Atoms

Tensile experiment of AZ91D magnesium alloy was carried out and serrated flow was apparent throughout the deformation history. Dynamic strain aging (DSA) occurs when the AZ91D magnesium alloy treated by solid solution treatment has been deformed at a set range of strain rates (1.11×10-4 s-1 to1.67×10-3 s-1) and a certain range temperatures (248 K to 423 K). The critical plastic strain εc was observed to increase with increasing strain rates but decrease with increasing temperature. The diffusing activation energy of solute atoms during the DSA occurring in AZ91D magnesium alloy is 140.8 kJ/mol by calculating, which is correspondence match with the diffusing activation energy of Al solute atoms in Mg matrix. Therefore, the micro-mechanism of DSA in the alloy is believed that the Al atoms in solid solution gather around dislocations to form Cottrell solute atmospheres by vacant diffusion and then pin the moving dislocations.

Serrated Yield Behavior in Nial Single Crystal

1994 ◽  
Vol 364 ◽  
Author(s):  
J. M. Brzeski ◽  
J.E. Hack ◽  
R. Darolia
Keyword(s):  
Experimental Data ◽  
Activation Energy ◽  
Single Crystal ◽  
Single Crystals ◽  
Dynamic Strain Aging ◽  
Strain Aging ◽  
Fracture Behavior ◽  
Recent Model ◽  
Dynamic Strain ◽  
Yield Behavior

AbstractDynamic strain aging has been characterized in standard purity NiAl single crystals during compression testing. The activation energy for the process suggests carbon and oxygen as the most likely agents. Experimental data is compared with a recent model and implications for the fracture behavior of NiAl are considered.

Considering the influence of heating rate, complex hardening and dynamic strain aging in AISI 1045 machining: experiments and simulations

CIRP Annals ◽  
2021 ◽  
Author(s):  
Friedrich Bleicher ◽  
Christian Baumann ◽  
Stephan Krall ◽  
Steven P. Mates ◽  
Sibylle Herzig ◽  
...  
Keyword(s):  
Heating Rate ◽  
Dynamic Strain Aging ◽  
Strain Aging ◽  
Dynamic Strain ◽  
Aisi 1045 ◽  
Complex Hardening

Dynamic strain aging and grain size reduction effects on the fatigue resistance of SA533B3 steels

2004 ◽  
Vol 324 (2-3) ◽  
pp. 140-151 ◽  
Author(s):  
J.Y Huang ◽  
J.R Hwang ◽  
J.J Yeh ◽  
C.Y Chen ◽  
R.C Kuo ◽  
...  
Keyword(s):  
Grain Size ◽  
Dynamic Strain Aging ◽  
Fatigue Resistance ◽  
Strain Aging ◽  
Size Reduction ◽  
Dynamic Strain
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