Abstract
Creep-fatigue damage in Alloy 617 was investigated through novel hybrid-control tests at 950C with force-controlled dwell periods at intermediate stress levels. An image-based analysis of cracks and voids in failed specimens was performed to distinguish between creep-dominated and fatigue-dominated failure. It was demonstrated that traditional creep-fatigue tests with strain-controlled dwell periods are not capable of producing creep-dominated failure. Moreover, it is shown that the classical time fraction rule for calculating creep damage that is suggested in ASME draft code case for Alloy 617 is not a valid indicator of creep damage.
| Original language | English (US) |
|---|---|
| Pages | 451-452 |
| Number of pages | 2 |
| State | Published - 2017 |
| Event | 14th International Conference on Fracture, ICF 2017 - Rhodes, Greece Duration: Jun 18 2017 → Jun 20 2017 |
Conference
| Conference | 14th International Conference on Fracture, ICF 2017 |
|---|---|
| Country/Territory | Greece |
| City | Rhodes |
| Period | 6/18/17 → 6/20/17 |
ASJC Scopus subject areas
- Civil and Structural Engineering
- Building and Construction