| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Fatigue in Materials: Fundamentals, Multiscale Characterizations and Computational Modeling
|
| Presentation Title |
Effect of Carbon Concentration on LCF Properties of N105 Alloy |
| Author(s) |
Kyle Rozman, Stoichko Antonov, Martin Detrois, Paul Jablonski |
| On-Site Speaker (Planned) |
Kyle Rozman |
| Abstract Scope |
The effect of C in Nimonic 105 (N105) has been investigated in the past and results showed greater creep resistance and poor phase stability with low C content. Carbon has been shown to improve high temperature strength in superalloys by grain refinement and strengthening of grain boundaries. However, elevated carbon content can also lead to clusters of carbides which can crack and enhance mode one crack propagation. A nominal composition of N105 (C = 0.15 wt.%) and a low carbon N105 (C = 0.031 wt.%) were manufactured and LCF properties of the two alloys were investigated at 750°C and a load ratio of 0.05. The lower carbon variant of N105 had inferior fatigue performance relative to the standard carbon content N105. Inferior fatigue performance is consistent with the larger grain size in the low carbon variant. Microstructural aspects of the two N105 variants and their effect on fatigue are discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, |