Fracture behaviour in the dynamic strain ageing regime of a martensitic steel

2006 ◽  
Vol 55 (12) ◽  
pp. 1091-1094 ◽  
Author(s):  
C. Gupta ◽  
J.K. Chakravartty ◽  
S.L. Wadekar ◽  
S. Banerjee
Keyword(s):  
Martensitic Steel ◽  
Fracture Behaviour ◽  
Dynamic Strain ◽  
Dynamic Strain Ageing ◽  
Strain Ageing

Dynamic strain ageing and crack propagation in the 2091 AlLi alloy

1993 ◽  
Vol 29 (11) ◽  
pp. 1379-1384 ◽  
Author(s):  
D. Delafosse ◽  
G. Lapasset ◽  
L.P. Kubin
Keyword(s):  
Crack Propagation ◽  
Dynamic Strain ◽  
Dynamic Strain Ageing ◽  
Strain Ageing

Fracture toughness in the dynamic strain ageing regime

1991 ◽  
Vol 25 (11) ◽  
pp. 2585-2588 ◽  
Author(s):  
M. Srinivas ◽  
G. Malakondaiah ◽  
K.Linga Murty ◽  
P.Rama Rao
Keyword(s):  
Fracture Toughness ◽  
Dynamic Strain ◽  
Dynamic Strain Ageing ◽  
Strain Ageing

Dynamic Strain Aging during Tensile Deformation of Extruded AZ81 Magnesium Alloy

2013 ◽  
Vol 652-654 ◽  
pp. 1937-1941 ◽  
Author(s):  
Si Qian Zhang ◽  
Liang Mao ◽  
Li Jia Chen
Keyword(s):  
Dynamic Strain Aging ◽  
Strain Aging ◽  
Tensile Deformation ◽  
Rate Sensitivity ◽  
Dynamic Strain ◽  
Dynamic Strain Ageing ◽  
Strain Ageing ◽  
Serrated Flow ◽  
Chatelier Effect ◽  
Solute Atoms

Serrated flow has been observed in AZ81 alloy during tensile deformation. The observed static strain ageing effect and negative strain rate sensitivity suggest that the serrated flow is due to interaction between dislocations and solute atoms, know as dynamic strain ageing (DSA). The Portevin-Le Chatelier effect is observed at temperatures between 150oC~200oC and 125oC~200oC. In the microstructure of deformed samples dislocations and twins is observed. It is suggested that the occurrence of the dynamic strain aging is associated with interactions between solute atoms and dislocations.

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