Study on Fatigue Crack Behavior in Welded Structure of DSS 2205

2012 ◽  
Vol 503-504 ◽  
pp. 991-994
Author(s):  
Zhi Xiang Wang ◽  
Zheng Lun Wang ◽  
Xin Zhang
Keyword(s):  
Growth Rate ◽  
Fatigue Crack ◽  
Crack Growth Rate ◽  
Fatigue Crack Growth ◽  
Crack Growth ◽  
Fatigue Crack Growth Rate ◽  
Fatigue Testing ◽  
Testing Machine ◽  
Regression Equations ◽  
Welded Structure

The fatigue crack growth behavior of weld metal (WM), heat affected zone (HAZ) and base metal(BM) of Duplex Stainless Steel (DSS) 2205 standard sample was tested in different stress ratios at HF fatigue testing machine. ANSYS analysis software was used to simulate the fatigue crack growth rate of the steel under different stress ratio. Regression equations and da / dK-ΔK curves of experiment and simulation are compared and analyzed. The results show that the fatigue crack growth rate of WM is slowest and the ability to resist fatigue crack growth is highest among the three parts, the lowest is BM. Secondly, the sensitivity of the rate caused by the stress change of WM is the highest, and the lowest is BM. The simulation of fatigue crack growth rate of DSS 2205 is completely correct and feasible by the experiment.

Study on Fatigue Crack Growth Rate of Welded Joint of Duplex Stainless Steel

2011 ◽  
Vol 291-294 ◽  
pp. 941-944
Author(s):  
Zheng Lun Wang ◽  
Zhi Xiang Wang
Keyword(s):  
Growth Rate ◽  
Stainless Steel ◽  
Fatigue Crack ◽  
Crack Growth Rate ◽  
Fatigue Crack Growth ◽  
Duplex Stainless Steel ◽  
Crack Growth ◽  
Fatigue Crack Growth Rate ◽  
Fatigue Testing ◽  
Testing Machine

The fatigue crack growth behavior of weld metal (WM), heat affected zone(HAZ) and base metal(BM) of Duplex Stainless Steel 2205(DSS) has been determined at high-frequency fatigue testing machine. The results show that the fatigue crack growth rate of WM is slowest and the ability to resist fatigue crack growth is highest in the three parts. Secondly, the sensitivity caused by the stress change of WM is the highest, followed by HAZ, and the BM is the weakest.

The Quantitative Estimation of the Sensitivity of Corrosion and Hydrogen Environment on Fatigue Crack Growth Rate for Steels

2014 ◽  
Author(s):  
Mikihito Ishikawa ◽  
A. Toshimitsu Yokobori ◽  
Yusuke Kawashima ◽  
Toshihito Ohmi ◽  
Seiji Sugawara
Keyword(s):  
Growth Rate ◽  
Fatigue Crack ◽  
Crack Growth Rate ◽  
Fatigue Crack Growth ◽  
Hydrogen Embrittlement ◽  
Crack Growth ◽  
Fatigue Crack Growth Rate ◽  
Fatigue Testing ◽  
Atmospheric Condition ◽  
Compact Specimen

In this paper, the tensile fatigue tests using small compact specimen were conducted by the corrosion and hydrogen embrittlement fatigue testing method which authors have proposed. Based on these results, the quantitative separated estimations of the sensitivity of Corrosion, Hydrogen Embrittlement (HE) and Facet-like Fracture Hydrogen Induced Dislocation Pile-up (F-HIDP) were made by using the acceleration factor, D*, that is the ratio of fatigue crack growth rate to that under atmospheric condition.

Influence of reactor water of nominal parameters on fatigue crack growth rate in 15Kh2NMFA steel

1985 ◽  
Vol 21 (2) ◽  
pp. 130-133
Author(s):  
V. I. Pokhmurskii ◽  
A. S. Zubchenko ◽  
A. A. Popov ◽  
I. P. Gnyp ◽  
V. M. Timonin ◽  
...  
Keyword(s):  
Growth Rate ◽  
Fatigue Crack ◽  
Crack Growth Rate ◽  
Fatigue Crack Growth ◽  
Crack Growth ◽  
Fatigue Crack Growth Rate ◽  
Reactor Water ◽  
15Kh2nmfa Steel

Effect of Hardness and Tensile Mean Stress on Fatigue Crack Growth in Beryllium Copper

1969 ◽  
Vol 11 (3) ◽  
pp. 343-349 ◽  
Author(s):  
L. P. Pook
Keyword(s):  
Growth Rate ◽  
Fatigue Crack ◽  
Crack Growth Rate ◽  
Fatigue Crack Growth ◽  
Residual Stresses ◽  
Crack Growth ◽  
Fatigue Crack Growth Rate ◽  
Mean Stress ◽  
Growth Data ◽  
Beryllium Copper

Some fatigue crack growth data have been obtained for age-hardened beryllium copper. The fatigue crack growth rate was found to be very dependent on the hardness and tensile mean stress. This dependence is believed to be associated with the intense residual stresses surrounding Preston-Guinier zones.

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