Effect of thermal aging upon the fatigue-crack propagation of austenitic stainless steels

1974 ◽  
Vol 5 (4) ◽  
pp. 831-838 ◽  
Author(s):  
L. A. James
Keyword(s):  
Fatigue Crack ◽  
Crack Propagation ◽  
Fatigue Crack Propagation ◽  
Stainless Steels ◽  
Thermal Aging ◽  
Austenitic Stainless Steels

Stable and Unstable Fatigue Crack Propagation During High Temperature Creep-Fatigue in Austenitic Steels: The Role of Precipitation

1979 ◽  
Vol 101 (3) ◽  
pp. 275-283 ◽  
Author(s):  
G. J. Lloyd ◽  
J. Wareing
Keyword(s):  
Fatigue Crack ◽  
High Temperature ◽  
Crack Propagation ◽  
Fatigue Crack Propagation ◽  
Stainless Steels ◽  
Austenitic Stainless Steels ◽  
Austenitic Steels ◽  
High Temperature Creep ◽  
Temperature Creep ◽  
Creep Fatigue

The distinction between stable and unstable fatigue crack propagation during high temperature creep-fatigue in austenitic stainless steels is introduced. The transition from one class of behavior to the other is related to the precipitate distribution and to the nature of the prevailing crack path. It is shown by reference to new studies and examples drawn from the literature that this behavior is common to both high strain and predominantly elastic fatigue in austenitic stainless steels. The relevance of this distinction to a mechanistic approach to high temperature plant design is discussed.

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