Biaxial Low Cycle Fatigue of Unaged and Aged 1Cr-1Mo-1/4V Steels at Elevated Temperature

1991 ◽  
Vol 113 (2) ◽  
pp. 244-253 ◽  
Author(s):  
M. Sakane ◽  
M. Ohnami ◽  
M. Sawada
Keyword(s):  
Elevated Temperature ◽  
Low Cycle Fatigue ◽  
Biaxial Stress ◽  
Cycle Fatigue ◽  
Biaxial Strain ◽  
Data Correlation ◽  
Biaxial Fatigue ◽  
Fatigue Data ◽  
Effective Stress Parameter ◽  
Stress Parameters

This paper describes the biaxial low cycle fatigue of unaged and aged 1Cr-1Mo-1/4V rotor steels at 823 K in air. Combined push-pull and reversed torsion tests were carried out on these steels and the biaxial fatigue data were obtained. Aging significantly reduced the hardness of the steel but had no effect on the crack direction in biaxial low cycle fatigue. Aging also had no effect on the data correlation using the biaxial strain parameters, but had a significant effect on the data correlation using the biaxial stress parameters. The change in the effective stress parameter in correlating the biaxial fatigue data due to aging is discussed in connection with the material softening.

Low-Cycle Fatigue under Biaxial Stress

1974 ◽  
Vol 188 (1) ◽  
pp. 657-671 ◽  
Author(s):  
M. W. Parsons ◽  
K. J. Pascoe
Keyword(s):  
Austenitic Steel ◽  
Abrupt Change ◽  
Low Cycle Fatigue ◽  
Axial Loading ◽  
Strain Range ◽  
Fatigue Behaviour ◽  
Biaxial Stress ◽  
Cycle Fatigue ◽  
Biaxial Strain ◽  
Total Strain Range

The low-cycle fatigue behaviour of a ferritic and an austenitic steel have been studied under various conditions of reversed biaxial strain. These cyclically softened and hardened respectively. In all cases, relationships of the form were found between total strain range Δε t and life Nf for lives in the range 102−105 cycles, with an abrupt change of β at intermediate lives. Variation of state of strain affected both β and κ. Various theories for the correlation of fatigue behaviour under multi-axial loading have been reviewed and compared with these results. None was found to account adequately for the effect of straining régime with the materials tested.

Low cycle fatigue of 2.25Cr1Mo steel with tensile and compressed hold loading at elevated temperature

2016 ◽  
Vol 667 ◽  
pp. 251-260 ◽  
Author(s):  
Junfeng Zhang ◽  
Dunji Yu ◽  
Zizhen Zhao ◽  
Zhe Zhang ◽  
Gang Chen ◽  
...  
Keyword(s):  
Elevated Temperature ◽  
Low Cycle Fatigue ◽  
Cycle Fatigue

scholarly journals Substructural Change during Low-cycle Fatigue of SUS 316 at Elevated Temperature

1982 ◽  
Vol 68 (7) ◽  
pp. 809-818
Author(s):  
Teruo TANAKA ◽  
Takashi IGAWA ◽  
Kazuo HOSHINO
Keyword(s):  
Elevated Temperature ◽  
Low Cycle Fatigue ◽  
Cycle Fatigue

Low cycle fatigue behavior of nickel-based superalloy GH4145/SQ at elevated temperature

2004 ◽  
Vol 373 (1-2) ◽  
pp. 54-64 ◽  
Author(s):  
Duyi Ye ◽  
Dehai Ping ◽  
Zhenlin Wang ◽  
Haohao Xu ◽  
Xiaoyu Mei ◽  
...  
Keyword(s):  
Elevated Temperature ◽  
Low Cycle Fatigue ◽  
Fatigue Behavior ◽  
Cycle Fatigue ◽  
Nickel Based Superalloy

Cyclic Softening Effect on Design Margin of JLF-1 Steel

2013 ◽  
Author(s):  
Huailin Li
Keyword(s):  
Elevated Temperature ◽  
Low Cycle Fatigue ◽  
Fatigue Behavior ◽  
Cyclic Softening ◽  
Fatigue Properties ◽  
Cycle Fatigue ◽  
Softening Effect ◽  
As Stress ◽  
Supercritical Water Cooled Reactor ◽  
Design Margin

A reduced-activation ferritic/martensitic (RAF/M) steel, JLF-1, is considered as one of the candidate structure material of the fusion reactors and supercritical water-cooled reactor (SCWR). Low cycle fatigue properties of JLF-1 steel at elevated temperature are the design base to provide adequate design margin against postulated mechanism that could experience during its design life, such as stress range, plastic deformation, and cyclic softening etc. However, the reduction in design margin is significant when the cyclic softening happens in cyclic deformation at RT, 673K, 873K. Thus, for the application as the structural materials, it is necessary to evaluate low cycle fatigue behavior and cyclic softening of JLF-1 steel at elevated temperature since those properties of material at elevated temperature are the key issue for design.

Energy-based approach for the evaluation of low cycle fatigue behaviour of 2.25Cr–1Mo steel at elevated temperature

2010 ◽  
Vol 527 (21-22) ◽  
pp. 5619-5623 ◽  
Author(s):  
M.D. Callaghan ◽  
S.R. Humphries ◽  
M. Law ◽  
M. Ho ◽  
P. Bendeich ◽  
...  
Keyword(s):  
Elevated Temperature ◽  
Low Cycle Fatigue ◽  
Fatigue Behaviour ◽  
Cycle Fatigue
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