Abstract
In order to clarify the loading frequency effect on fatigue crack growth rate in hydrogen gas environment, fatigue crack growth tests were carried out on a 6061-T6 aluminum alloy at several loading frequency levels in a pure dry hydrogen gas, in air and in a pure dry nitrogen gas. Hydrogen enhances the fatigue crack growth rate. Moreover, the growth rate increases as the loading frequency decreases not only in hydrogen but also in nitrogen. The main cause of the loading frequency effect relate to thermal activation in plastic zone at the tip of a crack growing across grains by slipoff. The loading frequency effect concerning hydrogen itself could not be revealed. There exists a transition loading frequency below which the crack growth rate is practically independent of loading frequency.
| Original language | English |
|---|---|
| Pages (from-to) | 1746-1753 |
| Number of pages | 8 |
| Journal | Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A |
| Volume | 75 |
| Issue number | 760 |
| DOIs | |
| Publication status | Published - Jan 1 2009 |
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All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Mechanics of Materials
- Mechanical Engineering
Cite this
Loading frequency effect on fatigue crack growth rate in low-pressure hydrogen gas environment in the case of 6061-T6 aluminum alloy. / Oda, Yasuji; Noguchi, Hiroshi; Higashida, Kenji.
In: Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A, Vol. 75, No. 760, 01.01.2009, p. 1746-1753.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Loading frequency effect on fatigue crack growth rate in low-pressure hydrogen gas environment in the case of 6061-T6 aluminum alloy
AU - Oda, Yasuji
AU - Noguchi, Hiroshi
AU - Higashida, Kenji
PY - 2009/1/1
Y1 - 2009/1/1
N2 - In order to clarify the loading frequency effect on fatigue crack growth rate in hydrogen gas environment, fatigue crack growth tests were carried out on a 6061-T6 aluminum alloy at several loading frequency levels in a pure dry hydrogen gas, in air and in a pure dry nitrogen gas. Hydrogen enhances the fatigue crack growth rate. Moreover, the growth rate increases as the loading frequency decreases not only in hydrogen but also in nitrogen. The main cause of the loading frequency effect relate to thermal activation in plastic zone at the tip of a crack growing across grains by slipoff. The loading frequency effect concerning hydrogen itself could not be revealed. There exists a transition loading frequency below which the crack growth rate is practically independent of loading frequency.
AB - In order to clarify the loading frequency effect on fatigue crack growth rate in hydrogen gas environment, fatigue crack growth tests were carried out on a 6061-T6 aluminum alloy at several loading frequency levels in a pure dry hydrogen gas, in air and in a pure dry nitrogen gas. Hydrogen enhances the fatigue crack growth rate. Moreover, the growth rate increases as the loading frequency decreases not only in hydrogen but also in nitrogen. The main cause of the loading frequency effect relate to thermal activation in plastic zone at the tip of a crack growing across grains by slipoff. The loading frequency effect concerning hydrogen itself could not be revealed. There exists a transition loading frequency below which the crack growth rate is practically independent of loading frequency.
UR - http://www.scopus.com/inward/record.url?scp=77949356448&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77949356448&partnerID=8YFLogxK
U2 - 10.1299/kikaia.75.1746
DO - 10.1299/kikaia.75.1746
M3 - Article
AN - SCOPUS:77949356448
VL - 75
SP - 1746
EP - 1753
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 - 760
ER -