The advancements in the aeronautical field are often accompanied by new advancements in the materials used in the field. The most used metal alloys nowadays are the nickel based superalloys for their excellent mechanical properties even at high temperatures. In this paper, the aim is to study the static and fatigue behavior […]
The advancements in the aeronautical field are often accompanied by new advancements in the materials used in the field. The most used metal alloys nowadays are the nickel based superalloys for their excellent mechanical properties even at high temperatures.
In this paper, the aim is to study the static and fatigue behavior of a premium quality Inconel 718 at different temperatures. An experimental campaign on round test specimens was carried out and compared to existing data. Tensile tests at room temperature, 250°C and 450°C helped to identify the evolution of the Young’s modulus with the increase of temperature.
Fatigue testing at the same temperatures, and at two load ratios: 0.5 and -1, aimed to determine the endurance limit of the material at 105 cycles. The fatigue tests showed material softening during cycling and a decrease of the endurance limit with the increase of the temperature.
A microstructural analysis is done on the specimens and compared to the existing data in aim to understand the correlation between grain size and mechanical behavior for the Inconel 718.
Session
| Room | Date | Hour | Subject |
|---|---|---|---|
| Poster Session | 00:00-00:00 | Lyne Meouchy 55 - Influence of temperature on tensile and fatigue behavior of premium quality Inconel 718 |
