scholarly journals High Temperature Strength. Development of Long Term Creep-Fatigue Evaluation Method for Stainless Steel Weldments, I. Microstructure Change due to Thermal and Mechanical Histories in Stainless Steel Weld Metals.

1997 ◽  
Vol 46 (1) ◽  
pp. 7-12 ◽  
Author(s):  
Shinichi HASEBE ◽  
Tai ASAYAMA
Keyword(s):  
Stainless Steel ◽  
Evaluation Method ◽  
Strength Development ◽  
High Temperature Strength ◽  
Weld Metals ◽  
Stainless Steel Weld ◽  
Creep Fatigue ◽  
Fatigue Evaluation ◽  
Term Creep

Development of Creep–Fatigue Evaluation Method for 316FR Stainless Steel

2015 ◽  
Vol 137 (4) ◽  
Author(s):  
Yuji Nagae ◽  
Shigeru Takaya ◽  
Tai Asayama
Keyword(s):  
Stainless Steel ◽  
Fatigue Life ◽  
Evaluation Method ◽  
Elevated Temperatures ◽  
Strain Curve ◽  
Creep Damage ◽  
Fatigue Curve ◽  
Time To Failure ◽  
Creep Fatigue ◽  
Fatigue Evaluation

In the design of fast reactor plants, the most important failure mode to be prevented is creep–fatigue damage at elevated temperatures. 316FR stainless steel is a candidate material for the reactor vessel and internal structures of such plants. The development of a procedure for evaluating creep–fatigue life is essential. The method for evaluating creep–fatigue life implemented in the Japan Society of Mechanical Engineers code is based on the time fraction rule for evaluating creep damage. Equations such as the fatigue curve, dynamic stress–strain curve, creep rupture curve, and creep strain curve are necessary for calculating creep–fatigue life. These equations are provided in this paper and the predicted creep–fatigue life for 316FR stainless steel is compared with experimental data. For the evaluation of creep–fatigue life, the longest time to failure is about 100,000 h. The creep–fatigue life is predicted to an accuracy that is within a factor of 2 even in the case with the longest time to failure. Furthermore, the proposed method is compared with the ductility exhaustion method to investigate whether the proposed method gives conservative predictions. Finally, a procedure based on the time fraction rule for the evaluation of creep–fatigue life is proposed for 316FR stainless steel.

scholarly journals Evaluation of Long Term Creep-Fatigue Life for Type 304 Stainless Steel.

1992 ◽  
Vol 41 (471) ◽  
pp. 1773-1778 ◽  
Author(s):  
Hirotsugu KAWASAKI ◽  
Fumiyoshi UENO ◽  
Kazumi AOTO ◽  
Masakazu ICHIMIYA ◽  
Yusaku WADA
Keyword(s):  
Stainless Steel ◽  
Fatigue Life ◽  
304 Stainless Steel ◽  
Creep Fatigue ◽  
Term Creep ◽  
Type 304 ◽  
Type 304 Stainless Steel
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