Abstract
Rotating bending fatigue tests were performed for Inconel 718 at room temperature and elevated temperatures of 300°C, 500°C and 600°C to investigate the influence of temperature on the fatigue crack initlation and its propagation. Although the propagation of a micro-crack smaller than about 20 μm is suppressed at elevated temperatures, that of the larger-crack is accelerated inversely. These results were discussed from the viewpoints of the softening of matrix and the oxidation of surface caused by the high temperature.
| Translated title of the contribution | Initiation and Growth Behavior of a Fatigue Crack in Inconel 718 at Elevated Temperatures |
|---|---|
| Original language | Japanese |
| Pages (from-to) | 1954-1961 |
| Number of pages | 8 |
| Journal | Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A |
| Volume | 65 |
| Issue number | 637 |
| DOIs | |
| Publication status | Published - Sept 25 1999 |