scholarly journals Small crack growth law at elevated temperature in the rotating bending tests of carbon seeel (Continued report).

1988 ◽  
Vol 54 (500) ◽  
pp. 663-669
Author(s):  
Norio KAWAGOISHI ◽  
Hironobu NISITANI
Keyword(s):  
Elevated Temperature ◽  
Crack Growth ◽  
Small Crack ◽  
Bending Tests ◽  
Rotating Bending ◽  
Small Crack Growth

scholarly journals Fatigue Small Crack Growth in a Single Crystal Ni-Base Superalloy at Elevated Temperature.

1992 ◽  
Vol 41 (467) ◽  
pp. 1261-1267 ◽  
Author(s):  
Masakazu OKAZAKI ◽  
Tetsuya IMAI ◽  
Takayuki SATOH ◽  
Shinichiroh NOHMI
Keyword(s):  
Elevated Temperature ◽  
Single Crystal ◽  
Crack Growth ◽  
Small Crack ◽  
Small Crack Growth ◽  
Base Superalloy

Fatigue Crack Growth Resistance in Ni-Base Super Alloy

2007 ◽  
Vol 348-349 ◽  
pp. 541-544 ◽  
Author(s):  
Kazuhiro Morino ◽  
Norio Kawagoishi ◽  
Q. Chen ◽  
Y. Matsuyama ◽  
Y. Nakamura
Keyword(s):  
Growth Rate ◽  
Grain Size ◽  
Crack Growth ◽  
Fatigue Tests ◽  
Small Crack ◽  
Fatigue Crack Growth Resistance ◽  
Rotating Bending Fatigue ◽  
Rotating Bending ◽  
Small Crack Growth ◽  
Super Alloy

Rotating bending fatigue tests were carried out to investigate the influence of grain size on the resistance to crack growth of Ni-base super alloy, Inconel 718, using the materials with grain sizes of about 20, 50,100 and 200 たm, at room temperature. The larger grain size, the smaller crack growth rate, though the static strength was decreased with increase in grain size. The growth rate of a small crack was uniquely determined by the term ja na (Small crack growth law), where ja and a are the stress amplitude and the crack length, respectively, and n is a constant. The resistance to crack growth among materials was evaluated based on the law and showed a good correlation with tensile strength jB, meaning that fatigue life can be predicted by using only j B BB.

scholarly journals 202 Small Crack Growth Behavior of Ni Base Superalloy at an Elevated Temperature

2001 ◽  
Vol 2001 (0) ◽  
pp. 43-44
Author(s):  
Masahiro GOTO ◽  
Takaei YAMAMOTO ◽  
Norio KAWAGOISHI ◽  
Hironobu NISITANI
Keyword(s):  
Elevated Temperature ◽  
Crack Growth ◽  
Growth Behavior ◽  
Small Crack ◽  
Crack Growth Behavior ◽  
Small Crack Growth ◽  
Base Superalloy
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