Details
| Original language | English |
|---|---|
| Pages (from-to) | 1485-1493 |
| Number of pages | 9 |
| Journal | International journal of fatigue |
| Volume | 27 |
| Issue number | 10-12 |
| Publication status | Published - Oct 2005 |
| Externally published | Yes |
| Event | Fatigue Damage of Structural Materials V - Duration: 19 Sept 2004 → 24 Sept 2004 |
Abstract
We report on in situ fatigue tests performed in an environmental scanning electron microscope on high-temperature titanium alloy IMI 834 in the range from room temperature to 600 °C both in vacuum and water vapor environments. At low and intermediate temperatures (∼400 °C) cracks were found to initiate at slip bands independent of the actual environment. However, crack initiation in water vapor occurred at a much lower number of cycles. At 600 °C, the environmental effect became even more pronounced as cracks could easily form in an oxygen-enriched brittle subsurface layer. Moreover, fatigue life at this temperature was found to decrease distinctly in the case of cycling in pure water vapor as compared to loading in ambient air.
Keywords
- Damage mechanisms, Environmental degradation, In situ fatigue, Scanning electron microscopy, Titanium alloy IMI834
ASJC Scopus subject areas
- Mathematics(all)
- Modelling and Simulation
- Materials Science(all)
- General Materials Science
- Engineering(all)
- Mechanics of Materials
- Engineering(all)
- Mechanical Engineering
- Engineering(all)
- Industrial and Manufacturing Engineering
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In: International journal of fatigue, Vol. 27, No. 10-12, 10.2005, p. 1485-1493.
Research output: Contribution to journal › Conference article › Research › peer review
}
TY - JOUR
T1 - Influence of environment on fatigue mechanisms in high-temperature titanium alloy IMI834
AU - Biallas, Gerhard
AU - Essert, Mark
AU - Maier, Hans Jürgen
PY - 2005/10
Y1 - 2005/10
N2 - We report on in situ fatigue tests performed in an environmental scanning electron microscope on high-temperature titanium alloy IMI 834 in the range from room temperature to 600 °C both in vacuum and water vapor environments. At low and intermediate temperatures (∼400 °C) cracks were found to initiate at slip bands independent of the actual environment. However, crack initiation in water vapor occurred at a much lower number of cycles. At 600 °C, the environmental effect became even more pronounced as cracks could easily form in an oxygen-enriched brittle subsurface layer. Moreover, fatigue life at this temperature was found to decrease distinctly in the case of cycling in pure water vapor as compared to loading in ambient air.
AB - We report on in situ fatigue tests performed in an environmental scanning electron microscope on high-temperature titanium alloy IMI 834 in the range from room temperature to 600 °C both in vacuum and water vapor environments. At low and intermediate temperatures (∼400 °C) cracks were found to initiate at slip bands independent of the actual environment. However, crack initiation in water vapor occurred at a much lower number of cycles. At 600 °C, the environmental effect became even more pronounced as cracks could easily form in an oxygen-enriched brittle subsurface layer. Moreover, fatigue life at this temperature was found to decrease distinctly in the case of cycling in pure water vapor as compared to loading in ambient air.
KW - Damage mechanisms
KW - Environmental degradation
KW - In situ fatigue
KW - Scanning electron microscopy
KW - Titanium alloy IMI834
UR - http://www.scopus.com/inward/record.url?scp=27144549240&partnerID=8YFLogxK
U2 - 10.1016/j.ijfatigue.2005.06.009
DO - 10.1016/j.ijfatigue.2005.06.009
M3 - Conference article
AN - SCOPUS:27144549240
VL - 27
SP - 1485
EP - 1493
JO - International journal of fatigue
JF - International journal of fatigue
SN - 0142-1123
IS - 10-12
T2 - Fatigue Damage of Structural Materials V
Y2 - 19 September 2004 through 24 September 2004
ER -