scholarly journals Contribution of Local Strain Rate at Lüders Band Front to Grain Size Dependence of Lower Yield Stress in Iron

1971 ◽  
Vol 11 (3) ◽  
pp. 191-200 ◽  
Author(s):  
Jun IMAMURA ◽  
Hiroshi HAYAKAWA ◽  
Tadami TAOKA
Keyword(s):  
Grain Size ◽  
Strain Rate ◽  
Yield Stress ◽  
Size Dependence ◽  
Local Strain ◽  
Lower Yield ◽  
Lower Yield Stress ◽  
Lüders Band ◽  
Local Strain Rate ◽  
Band Front

A Low Temperature Yield Instability in Iron

1960 ◽  
Vol 13 (2) ◽  
pp. 359 ◽  
Author(s):  
JB Lean
Keyword(s):  
Strain Rate ◽  
Yield Stress ◽  
Testing Machine ◽  
Strain Curve ◽  
Applied Strain ◽  
Lower Yield ◽  
Stress Strain Curve ◽  
Lower Yield Stress ◽  
Air Temperatures ◽  
The Difference

Polycrystalline specimens of a 0�07% C steel were tested in tension at liquid air temperatures. Under particular conditions of temperature and strain rate, following the upper yield point, the recorded stress descended below the lower yield stress then returned to the lower yield stress quasi. elastically thus forming a serration on the stress-strain curve. The magnitude of the serration depended on the difference between the upper and lower yield stresses, on the rigidity of the testing machine employed, and on the applied strain rate.

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