About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Advanced Characterization of Materials for Nuclear, Radiation, and Extreme Environments VI
|
| Presentation Title |
Statistical Effects of Carbon on Primary Radiation Damage and Initial Clustering of Defects in Austenitic Stainless Steel |
| Author(s) |
Mathew Swisher, Andrea Jokisaari |
| On-Site Speaker (Planned) |
Mathew Swisher |
| Abstract Scope |
Understanding the progression of irradiation-induced defects in alloys requires insight into the interaction between material composition, the generation of point defects, and the formation of defect clusters. In this work, we employ molecular dynamics to simulate the creation of point defects via primary radiation damage modeling and track the initial formation of defect clusters. Statistical analysis is used to determine how the carbon content, temperature, and primary knock-on atom energy affect the generation of Frenkel pairs, as well as the distribution of initial defect cluster sizes produced during displacement cascades in austenitic stainless steel. This study provides atomistic scale insight into the mechanisms contributing to the difference in the growth rate of voids and loops that has been observed in additively manufactured 316L and 316H stainless steel subjected to ion irradiation. |