Modelling tail effects in creep-crack initiation and growth for 316L stainless steel

1998 ◽  
Vol 15 (3-4) ◽  
pp. 181-186 ◽  
Author(s):  
L. Laiarinandrasana ◽  
J.P. Polvora ◽  
R. Piques ◽  
B. Martelet
Keyword(s):  
Stainless Steel ◽  
Crack Initiation ◽  
316L Stainless Steel ◽  
Creep Crack

Mode II creep crack initiation in 316 LN stainless steel: experiments and modelling

1999 ◽  
Vol 16 (2) ◽  
pp. 99-107 ◽  
Author(s):  
D. Poquillon ◽  
M-T. Cabrillat ◽  
A. Pineau
Keyword(s):  
Stainless Steel ◽  
Crack Initiation ◽  
Mode Ii ◽  
Creep Crack

Environmental Effects on Fatigue Crack Initiation in 2.25 Cr-1 Mo Steel and 316L Stainless Steel

1988 ◽  
Vol 110 (3) ◽  
pp. 240-246
Author(s):  
V. K. Mathews ◽  
T. S. Gross
Keyword(s):  
Stainless Steel ◽  
Fatigue Crack ◽  
Crack Initiation ◽  
Room Temperature ◽  
316L Stainless Steel ◽  
Silicone Oil ◽  
Fatigue Crack Initiation ◽  
Type A ◽  
Order Of Magnitude ◽  
Number Of Cycles

Blunt notch fatigue crack initiation tests for Type A387 2.25 Cr-1 Mo steel and 316L stainless steel were performed in air at room temperature, in silicone oil at room temperature, in V-131B coal process solvent at 100°C, and in chlorine-modified V-131B coal process solvent at 100°C. For both steels the most damaging environment was room temperature air. The number of cycles to initiate a crack were almost identical in the coal process solvent and the silicone oil for the Type A-387 steel. These two environments resulted in the longest crack initiation lifetime for the Type A-387 steel. The crack initiation lifetime for the Type A-387 steel in the chlorine modified V-131 B coal process solvent was roughly a factor of five less than the lifetime in the silicone oil and the unmodified coal process solvent. The crack initiation lifetime for the Type A-387 steel in room temperature air was a factor of 30 less than the lifetime in the silicone oil or the unmodified coal process solvent. The improvement of the crack initiation lifetime for the Type A-387 steel in the unmodified coal process solvent and the silicone oil is attributed to protection of the material from embrittlement from room temperature air. The decrease in crack initiation lifetime in the chlorine modified coal process solvent indicates that chlorine can be an active embrittling agent in the coal process solvent. The crack initiation lifetime for 316L stainless steel was longest in the silicone oil. The lifetime decreased somewhat in the unmodified coal process solvent with a further decrease for the chlorine modified coal solvent. The crack initiation lifetime in air was an order of magnitude lower than the lifetime in the silicone oil. The silicone oil and the coal process solvent apparently protected the 316L stainless from the embrittlement in air. However, the coal process solvent is not entirely inert as in the case of Type A-387 steel. The chlorine is an active embrittling agent for the 316L stainless steel in the coal process solvent.

Effect of Coal Liquefaction Solvents on Fatigue Crack Initiation in 2 1/4 Cr-1 Mo Steel and 316L Stainless Steel

1985 ◽  
Vol 107 (4) ◽  
pp. 325-328
Author(s):  
T. S. Gross ◽  
V. K. Mathews ◽  
P. N. Kanga
Keyword(s):  
Stainless Steel ◽  
Fatigue Crack ◽  
Crack Initiation ◽  
Room Temperature ◽  
316L Stainless Steel ◽  
Fatigue Crack Initiation ◽  
Coal Liquefaction ◽  
Coal Liquids ◽  
Sulfide Corrosion ◽  
Order Of Magnitude

Blunt notch fatigue crack initiation tests were carried out on 2.25 Cr – 1 Mo steel and 316L stainless steel in room temperature air and in the process solvent from the Wilsonville, Alabama coal liquefaction pilot plant at 100°C. The crack initiation lifetime in the coal liquids at 100°C was an order of magnitude greater than the crack initiation lifetime in air for the 2.25 Cr–1 Mo steel. The crack initiation lifetime in the coal liquids for the 316L stainless steel was increased a factor of five over the crack initiation lifetime in air. The improvement in crack initiation lifetime was attributed to the coal liquids shielding the materials from atmospheric embrittlement. The coal liquids did not show any tendency to form sulfide corrosion products at 100°C.

scholarly journals Failure assessment diagram analysis of creep crack initiation in 316H stainless steel

2003 ◽  
Vol 80 (7-8) ◽  
pp. 541-551 ◽  
Author(s):  
C.M. Davies ◽  
N.P. O'Dowd ◽  
D.W. Dean ◽  
K.M. Nikbin ◽  
R.A. Ainsworth
Keyword(s):  
Stainless Steel ◽  
Crack Initiation ◽  
Failure Assessment Diagram ◽  
Creep Crack ◽  
Failure Assessment ◽  
Diagram Analysis
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