703 Crystallographic observation of the Creep and Creep-fatigue damage process for Mod.9Cr steel

2010 ◽  
Vol 2010.59 (0) ◽  
pp. 401-402
Author(s):  
Kazuto HIJIKURO ◽  
Hayato ITO ◽  
Kazunari FUJIYAMA ◽  
Hirohisa KIMACHI
Keyword(s):  
Fatigue Damage ◽  
9Cr Steel ◽  
Creep Fatigue ◽  
Damage Process

OS2503 EBSD observation and Strain Evaluation for Creep-fatigue Damage Process of Mod.9Cr Steel

2011 ◽  
Vol 2011 (0) ◽  
pp. _OS2503-1_-_OS2503-3_
Author(s):  
Shotaro OGINO ◽  
Hiroyuki HAGIWARA ◽  
Toshiki TSUBOI ◽  
Kazunari FUJIYAMA ◽  
Hirohisa KIMACHI
Keyword(s):  
Fatigue Damage ◽  
9Cr Steel ◽  
Creep Fatigue ◽  
Damage Process

OS1509 EBSD Observation for Grain Substructure of Creep and Creep-fatigue Damage Process of Mod.9Cr steel

2013 ◽  
Vol 2013 (0) ◽  
pp. _OS1509-1_-_OS1509-3_ ◽  
Author(s):  
Akihiro OGAWA ◽  
Shotaro OGINO ◽  
Hiroyuki HAGIWARA ◽  
Kazunari FUJIYAMA ◽  
Hirohisa KIMACHI
Keyword(s):  
Fatigue Damage ◽  
9Cr Steel ◽  
Creep Fatigue ◽  
Damage Process

S0306-1-2 Crystallographic Observation of the Creep and Creep-fatigue Damage Process for Mod.9Cr Steel

2010 ◽  
Vol 2010.1 (0) ◽  
pp. 23-24
Author(s):  
Kazuto HIJIKURO ◽  
Toshiki TSUBOI ◽  
Kazunari FUJIYAMA ◽  
Hirohisa KIMACHI
Keyword(s):  
Fatigue Damage ◽  
9Cr Steel ◽  
Creep Fatigue ◽  
Damage Process

Creep-Fatigue Damage and Life Evaluation for Boiler Header Stub Weldment

2002 ◽  
Author(s):  
Takuya Ito ◽  
Isamu Nonaka ◽  
Hideo Umaki ◽  
Hidetaka Nishida ◽  
Shizuma Shintani
Keyword(s):  
Fatigue Damage ◽  
Early Stage ◽  
Crack Depth ◽  
Prediction Method ◽  
Fatigue Tests ◽  
Short Cracks ◽  
Micro Cracks ◽  
Creep Fatigue ◽  
Damage Process ◽  
Maximum Crack

In order to clarify the creep-fatigue damage process and to evaluate the creep-fatigue life for boiler 2.25Cr-1Mo header stub welds, a series of creep-fatigue tests were performed on partial mock-up specimens of actual plant under simulated plant loading conditions. Creep voids and micro-cracks occurred along the weld toes at an early stage of life and grew to form many short cracks. These short cracks grew both on the surface and through the wall of the stub tube and later coalesced to form one crack. It was proved that there was a correlation between the maximum crack depth and life ratio and also that there was a correlation between the maximum crack depth and the maximum crack length on the surface. A life prediction method was proposed based on these two correlations.

Creep-fatigue interaction on estimation of lifetime and fatigue damage of F82H

2021 ◽  
Vol 173 ◽  
pp. 112830
Author(s):  
Wenhai Guan ◽  
Hyoseong Gwon ◽  
Takanori Hirose ◽  
Hisashi Tanigawa ◽  
Yoshinori Kawamura ◽  
...  
Keyword(s):  
Fatigue Damage ◽  
Creep Fatigue
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