About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
High Performance Steels
|
| Presentation Title |
The Effect of Varying Levels of Alloying and Impurities on Rate of Temper Embrittlement in Ni-Cr-Mo Steels |
| Author(s) |
Aphrodite Strifas, Matthew Draper, Sreeramamurthy Ankem |
| On-Site Speaker (Planned) |
Aphrodite Strifas |
| Abstract Scope |
Various compositions of nickel-chromium-molybdenum steel with yield strengths from 80-100 ksi were selected to investigate the effect of different alloying and impurity levels on temper embrittlement (TE) rate. The material was subjected to industrial normalization, austenitization, and temper steps. Following these heat treatment steps; the material was treated at 482°C (previously established as the temperature with the highest embrittlement rate) for times ranging from 0 to 10,000 minutes. Microstructural features including carbide morphology and volume fraction were investigated using scanning electron microscopy and quantified using image analysis software. Carbide and impurity precipitate compositions were measured using atom probe tomography. Mechanical characterization was completed via tensile and Charpy V-Notch testing. The influence of alloy and impurity content on the kinetic mechanisms associated with the rate of loss in toughness will be discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Iron and Steel, Mechanical Properties, Characterization |