Cyclic work hardening and formation of dislocation substructures during low-cycle fatigue of tempered dual-phase steels

1990 ◽  
Vol 61 (7) ◽  
pp. 325-332 ◽  
Author(s):  
Shree Ram Mediratta ◽  
Vaidyanath Ramaswamy ◽  
Vakil Singh ◽  
Rama Rao
Keyword(s):  
Work Hardening ◽  
Low Cycle Fatigue ◽  
Dual Phase ◽  
Cycle Fatigue ◽  
Dual Phase Steels

scholarly journals Low Cycle Fatigue-Hardening of TRIP-Aided Dual-Phase Steels

1990 ◽  
Vol 54 (12) ◽  
pp. 1350-1357 ◽  
Author(s):  
Shin-ichi Yasuki ◽  
Koh-ichi Sugimoto ◽  
Mitsuyuki Kobayashi ◽  
Shun-ichi Hashimoto
Keyword(s):  
Low Cycle Fatigue ◽  
Dual Phase ◽  
Cycle Fatigue ◽  
Dual Phase Steels

Two stage cyclic work hardening and two slope coffin-manson relationship in dual phase steels

1986 ◽  
Vol 20 (4) ◽  
pp. 555-558 ◽  
Author(s):  
S.R. Mediratta ◽  
V. Ramaswamy ◽  
P. Rama Rao
Keyword(s):  
Work Hardening ◽  
Dual Phase ◽  
Two Stage ◽  
Dual Phase Steels

An Energy Criterion for Low-Cycle Fatigue

1961 ◽  
Vol 83 (4) ◽  
pp. 565-571 ◽  
Author(s):  
D. E. Martin
Keyword(s):  
Work Hardening ◽  
Low Cycle Fatigue ◽  
Energy Criterion ◽  
Cycle Fatigue ◽  
Hardening Law ◽  
Fracture Ductility ◽  
Static Tensile ◽  
Temperature Strain ◽  
Total Damage ◽  
Strain Cycling

A criterion for low-cycle fatigue is developed which supposes that the segment of strain hysteresis associated with work-hardening is a measure of damage. On the basis of this “damage” work criterion and assuming a linear work-hardening law, the well-known plastic strain-cyclic life equation, N1/2Δεp = C is derived. The constant C in this equation is evaluated by setting the total damage energy absorbed in N cycles equal to the damage work of a static tensile test. This method of predicting the constant C is in much better agreement with room-temperature strain-cycling data than the previously suggested method of plotting the fracture ductility at 1/4 cycle.

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