scholarly journals INFLUENCE OF STRESS/STRAIN CONCENTRATION AND MEAN STRESS ON THE LOW-CYCLE FATIGUE BEHAVIOR OF THREE STRUCTURAL STEELS AT ROOM TEMPERATURE.

1968 ◽  
Author(s):  
E. Krempl
2016 ◽  
Vol 652 ◽  
pp. 30-41 ◽  
Author(s):  
Preeti Verma ◽  
N.C. Santhi Srinivas ◽  
S.R. Singh ◽  
Vakil Singh

2014 ◽  
Vol 3 (1) ◽  
pp. 20130092 ◽  
Author(s):  
V. M. J. Sharma ◽  
G. Sudarshan Rao ◽  
S. C. Sharma ◽  
Koshy M. George

1991 ◽  
Vol 22 (2) ◽  
pp. 499-506 ◽  
Author(s):  
V. Singh ◽  
M. Sundararaman ◽  
W. Chen ◽  
R. P. Wahi

2011 ◽  
Vol 80-81 ◽  
pp. 788-791
Author(s):  
Wei Wei Yu ◽  
Fei Xue ◽  
Xin Ming Meng ◽  
Lei Lin

To investigate the property of a new type of Zircaloy material, a low cycle fatigue (LCF) test has been performed at room temperature (RT) and 375°C. Results show that the new alloy generally displays cyclic hardening followed by a continuous softening behavior. Fatigue lifetime curves as a function of strain range imply that the new alloy has a nearly same lifetime than that of Zr-4 at RT, and superior than that at 375°C.


2019 ◽  
Vol 149 ◽  
pp. 111297
Author(s):  
Kaixuan Cui ◽  
Yanyun Zhao ◽  
Yutao Zhai ◽  
Bo Huang ◽  
Chunjing Li

Author(s):  
Xiaowei Wang ◽  
Jianming Gong ◽  
Yong Jiang ◽  
Yanping Zhao

Low cycle fatigue tests of original ferritic P92 steel at high temperatures and different strain amplitudes were conducted to investigate its cyclic softening behavior and fracture behavior. LCF tests of strain amplitudes ranging from ±0.2% to ±0.8% were performed in fully reversed manner with constant strain rate at 600 °C and 650 °C. In order to represent the different hysteresis stress-strain curves and the cyclic softening behavior of P92 steel, a cyclic plastic material model was used. In the model, improved nonlinear isotropic hardening parameter was proposed to make better simulation of the cyclic softening behavior. Based on the simulated stress-strain hysteresis loops, an energy-based life prediction model was used to predict the low cycle fatigue life. When compared with experimental responses, the simulations and predicted life were found to be quite reasonable. Low cycle fatigue fractography of the P92 steel was also observed, and it was found to be associated with the different strain amplitudes imposed on the specimen, the larger strain amplitude the more amounts of crack initiation sites could be found.


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