scholarly journals Difference between monotonic tension and creep-fatigue in the behavior of small crack initiation and early growth of 304 stainless steel at elevated temperature.

1989 ◽  
Vol 38 (432) ◽  
pp. 1067-1072 ◽  
Author(s):  
Ryuichi OHTANI ◽  
Naoya TADA ◽  
Tsutomu HASHIMOTO
Keyword(s):  
Stainless Steel ◽  
Elevated Temperature ◽  
Crack Initiation ◽  
Early Growth ◽  
Small Crack ◽  
304 Stainless Steel ◽  
Creep Fatigue

scholarly journals Crack Initiation Life of 304 Stainless Steel Notched Specimen at Elevated Temperature.

1992 ◽  
Vol 41 (460) ◽  
pp. 68-73 ◽  
Author(s):  
Hiroyuki TAKAHASHI ◽  
Takashi KAWAKAMI ◽  
Tetsuro UNO ◽  
Kenichi TAKAKURA ◽  
Katsumi WATASHI ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Elevated Temperature ◽  
Crack Initiation ◽  
304 Stainless Steel ◽  
Notched Specimen ◽  
Crack Initiation Life

Crack Initiation Process for Semi-Circular Notched Plate in Creep-Fatigue Test at Elevated Temperature

2008 ◽  
Author(s):  
Osamu Watanabe ◽  
Bopit Bubphachot ◽  
Nobuchika Kawasaki ◽  
Naoto Kasahara
Keyword(s):  
Stainless Steel ◽  
Elevated Temperature ◽  
Crack Initiation ◽  
Fatigue Test ◽  
Video Camera ◽  
Test Results ◽  
Crack Initiation And Propagation ◽  
Initiation Process ◽  
Initiation And Propagation ◽  
Creep Fatigue

Crack initiation and propagation in creep-fatigue test were observed on semi-circular notched plates at elevated temperature by the CCD video camera. Test specimens are made of SUS304 stainless steel, and temperature is kept to be 550°C, and geometry of the semi-circular plate specimens are changed by diameter size of the hole. Photographs of all cycles were recorded to investigate crack initiation process in structural component having stress concentration and obtain number of cycle of crack initiation (Nc). The test results were compared with predictions by the Stress Redistribution Locus (SRL) method and the Neuber’s rule’s method.

Micro-Crack Initiation, Propagation and Threshold in Elevated Temperature Inelastic Fatigue

1986 ◽  
Vol 108 (2) ◽  
pp. 214-225 ◽  
Author(s):  
S. Usami ◽  
Y. Fukuda ◽  
S. Shida
Keyword(s):  
Stainless Steel ◽  
Elevated Temperature ◽  
Crack Initiation ◽  
304 Stainless Steel ◽  
Threshold Behavior ◽  
Wave Shape ◽  
Micro Cracks ◽  
Weld Defect ◽  
Effects Of Temperature ◽  
Temperature Strain

Micro-crack initiation, propagation and threshold behavior in plain, short crack, weld defect and notch specimens of 304 stainless steel are observed under elevated temperature strain-controlled inelastic fatigue conditions. The effects of temperature, strain rate, wave shape and strain gradient are analyzed and methods for estimating fatigue life and fatigue limit are postulated on the basis of the behavior of the micro-cracks.

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