A general scenario of fish‐eye crack initiation on the life of high‐strength steels in the very high‐cycle fatigue regime

2019 ◽  
Vol 42 (9) ◽  
pp. 2183-2194 ◽  
Author(s):  
Chong Wang ◽  
Yongjie Liu ◽  
Alexander Nikitin ◽  
Qingyuan Wang ◽  
Min Zhou
Keyword(s):  
Crack Initiation ◽  
High Cycle Fatigue ◽  
High Strength Steels ◽  
High Strength ◽  
Cycle Fatigue ◽  
Very High Cycle Fatigue ◽  
Fish Eye ◽  
Very High

Study on Very High Cycle Fatigue Fracture of High Strength Steel with CFB/M Complex Microstructure

2010 ◽  
Vol 638-642 ◽  
pp. 3839-3845 ◽  
Author(s):  
Y. Yu ◽  
B.Z. Bai ◽  
Jia Lin Gu
Keyword(s):  
Crack Initiation ◽  
High Purity ◽  
High Cycle Fatigue ◽  
High Strength Steels ◽  
High Strength ◽  
Inclusion Size ◽  
Cycle Fatigue ◽  
Very High Cycle Fatigue ◽  
Very High ◽  
Production Conditions

The influence of production conditions and Nb microalloy on the very high cycle fatigue (VHCF) behaviors of different Carbide-free bainite/martensite (CFB/M) steels was studied, which include steels produced in laboratory and steelworks. Results show the Nb-microalloy can strengthen the microstructure including the soft bainite plate and improve the VHCF property evidently. In addition, the high purity of steels can avoid inclusion induced crack initiation, but can not improve the VHCF property unless the microstructure possesses favorable uniformity. The critical inclusion size is suggested to be 10-15μm and the CFB/M complex microstructure may be less sensitive to inclusions than other high strength steels.

On effect of hydrogen on very high cycle fatigue behaviours of high strength steels

2013 ◽  
Vol 29 (11) ◽  
pp. 1290-1296 ◽  
Author(s):  
J-B Shi ◽  
Y D Li ◽  
W M Guo ◽  
N Xu ◽  
X F Wu ◽  
...  
Keyword(s):  
High Cycle Fatigue ◽  
High Strength Steels ◽  
High Strength ◽  
Cycle Fatigue ◽  
Very High Cycle Fatigue ◽  
Very High
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