Short fatigue cracks nucleation and growth in lean duplex stainless steel LDX 2101

2014 ◽  
Vol 615 ◽  
pp. 169-174 ◽  
Author(s):  
R. Strubbia ◽  
S. Hereñú ◽  
I. Alvarez-Armas ◽  
U. Krupp
Keyword(s):  
Stainless Steel ◽  
Duplex Stainless Steel ◽  
Fatigue Cracks ◽  
Nucleation And Growth ◽  
Lean Duplex Stainless Steel

scholarly journals Precipitation of Secondary Phases in Lean Duplex Stainless Steel 2101 during Isothermal Ageing

2010 ◽  
Vol 50 (2) ◽  
pp. 286-293 ◽  
Author(s):  
Y. L. Fang ◽  
Z. Y. Liu ◽  
W. Y. Xue ◽  
H. M. Song ◽  
L. Z. Jiang
Keyword(s):  
Stainless Steel ◽  
Duplex Stainless Steel ◽  
Secondary Phases ◽  
Lean Duplex Stainless Steel ◽  
Isothermal Ageing

Short Crack Initiation during Low-Cycle Fatigue in SAF 2507 Duplex Stainless Steel

2007 ◽  
Vol 345-346 ◽  
pp. 343-346 ◽  
Author(s):  
M.C. Marinelli ◽  
Suzanne Degallaix ◽  
I. Alvarez-Armas
Keyword(s):  
Stainless Steel ◽  
Duplex Stainless Steel ◽  
Room Temperature ◽  
Low Cycle Fatigue ◽  
Fatigue Cracks ◽  
Surface Strain ◽  
The Other ◽  
Cycle Fatigue ◽  
Cyclic Tests ◽  
Characteristic Microstructure

In this work, the formation of fatigue cracks is considered as a nucleation process due to the development of a characteristic microstructure formed just beneath the specimen surface. Strain controlled cyclic tests were carried out at room temperature at total strain ranges εt = 0.8 and 1.2% in flat specimens of SAF 2507 Duplex Stainless Steel (DSS). The results show that for this DSS, at εt = 0.8%, the correlation between phases (Kurdjumov-Sacks crystallographic relation) plays an important role in the formation of microcracks. On the other hand, at εt = 1.2%, microcracks initiate in the ferritic phase and the K-S relation does not seem to affect the formation of the cracks.

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