Very high cycle fatigue behavior of shot-peened 3Cr13 high strength spring steel

2013 ◽  
Vol 50 ◽  
pp. 503-508 ◽  
Author(s):  
Baohua Nie ◽  
Zheng Zhang ◽  
Zihua Zhao ◽  
Qunpeng Zhong
2016 ◽  
Vol 39 (9) ◽  
pp. 1081-1091 ◽  
Author(s):  
W. J. Hui ◽  
C. Zhou ◽  
Y. J. Zhang ◽  
X. L. Zhao ◽  
H. Dong

2010 ◽  
Vol 118-120 ◽  
pp. 948-951
Author(s):  
Chuang Shao ◽  
Claude Bathias ◽  
Danièle Wagner ◽  
Hua Tao

Very high cycle fatigue behavior of high strength steel, were investigated using ultrasonic fatigue testing equipment at 20 kHz up to 109cycles. S-N curves at room temperature with different stress ratio (R=0.01 and R=0.1) was determined. The experimental results show that fatigue strength decrease with increasing number of cycles between 105 and 109. SEM examination of fracture surface reveals that fatigue damage was governed by the formation of cracks, and subsurface crack initiation was in the very long life range. The results shown that the portions of life attributed to subsurface crack initiation between 107 and 109 cycles are 99%.


2008 ◽  
Vol 489 (1-2) ◽  
pp. 373-379 ◽  
Author(s):  
Y.D. Li ◽  
Z.G. Yang ◽  
Y.B. Liu ◽  
S.X. Li ◽  
G.Y.Li ◽  
...  

2015 ◽  
Vol 664 ◽  
pp. 168-174
Author(s):  
Zong Min Lv ◽  
Bo Lin He

With the increase of design fatigue life of many critical mechanical components and engineering structures, research on very high cycle fatigue (VHCF) has become a new topic for engineering components failure. This paper summarizes works of VHCF of high strength steel, such as the observations on fish-eye, which is one of the typical characteristics in VHCF regime; Characteristics of crack initiation and crack propagation are analyzed based on fracture surface; The present work also analyzes the fatigue mechanism and related models. Loading frequency effect on the VHCF behavior is also discussed. Some prospective aspects of future researches are proposed.


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