Abstract
Rotating bending fatigue tests were carried out for Inconel 718 at room temperature to investigate the growth characteristics of a small crack. It was found that: (1) The crack initiated at the grain boundary and then propagated as a transgranular crack. (2) When the stress level was higher than the fatigue limit, the fatigue life was mainly controlled by the growth life of a crack smaller than 1 mm. (3) The fatigue limit was a limiting stress for the crack propagation. (4) At low stress levels (σa/σ0.2<0.5, σa: stress amplitude, (σ0.2:0.2% proof stress), the crack growth rate was determined by the stress intensity factor range ΔK; and at high stress levels (σa/σ0.2>0.6), it was determined by the small crack growth law.
| Original language | English |
|---|---|
| Pages (from-to) | 1398-1402 |
| Number of pages | 5 |
| Journal | Nippon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A |
| Volume | 63 A |
| Issue number | 611 |
| DOIs | |
| Publication status | Published - Jan 1 1997 |
| Externally published | Yes |
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All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Mechanics of Materials
- Mechanical Engineering
Cite this
Characteristics of small crack growth in a nickel-base superalloy. / Kawagoishi, Norio; Chen, Qiang; Tanaka, Hideho; Maeno, Ichiro; Kiyofuji, Jun ichi.
In: Nippon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A, Vol. 63 A, No. 611, 01.01.1997, p. 1398-1402.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Characteristics of small crack growth in a nickel-base superalloy
AU - Kawagoishi, Norio
AU - Chen, Qiang
AU - Tanaka, Hideho
AU - Maeno, Ichiro
AU - Kiyofuji, Jun ichi
PY - 1997/1/1
Y1 - 1997/1/1
N2 - Rotating bending fatigue tests were carried out for Inconel 718 at room temperature to investigate the growth characteristics of a small crack. It was found that: (1) The crack initiated at the grain boundary and then propagated as a transgranular crack. (2) When the stress level was higher than the fatigue limit, the fatigue life was mainly controlled by the growth life of a crack smaller than 1 mm. (3) The fatigue limit was a limiting stress for the crack propagation. (4) At low stress levels (σa/σ0.2<0.5, σa: stress amplitude, (σ0.2:0.2% proof stress), the crack growth rate was determined by the stress intensity factor range ΔK; and at high stress levels (σa/σ0.2>0.6), it was determined by the small crack growth law.
AB - Rotating bending fatigue tests were carried out for Inconel 718 at room temperature to investigate the growth characteristics of a small crack. It was found that: (1) The crack initiated at the grain boundary and then propagated as a transgranular crack. (2) When the stress level was higher than the fatigue limit, the fatigue life was mainly controlled by the growth life of a crack smaller than 1 mm. (3) The fatigue limit was a limiting stress for the crack propagation. (4) At low stress levels (σa/σ0.2<0.5, σa: stress amplitude, (σ0.2:0.2% proof stress), the crack growth rate was determined by the stress intensity factor range ΔK; and at high stress levels (σa/σ0.2>0.6), it was determined by the small crack growth law.
UR - http://www.scopus.com/inward/record.url?scp=0031193011&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0031193011&partnerID=8YFLogxK
U2 - 10.1299/kikaia.63.1398
DO - 10.1299/kikaia.63.1398
M3 - Article
VL - 63 A
SP - 1398
EP - 1402
JO - Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
JF - Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
SN - 0387-5008
IS - 611
ER -