The Energetics of He Bubble Nucleation
- Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
- Sandia National Laboratories (SNL-CA), Livermore, CA (United States)
In this project we considered the initial stages of helium bubble nucleation via the proposed mechanism of self-interstitial atom nucleation. By calculating the energy barrier to self-interstitial atom nucleation in a range of Fe-Ni-Cr alloys we identified the most important energetic contributions to the phenomenon: the Frenkel-pair energy barrier in the absence of helium and the difference of insertion energy for a He cluster into a perfect lattice and vacancy. From this observation, we developed a simple model of helium-assisted self-interstitial atom nucleation.
- Research Organization:
- Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA); USDOE Laboratory Directed Research and Development (LDRD) Program
- DOE Contract Number:
- NA0003525
- OSTI ID:
- 2480199
- Report Number(s):
- SAND--2024-13680R
- Country of Publication:
- United States
- Language:
- English
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Atomistic studies of nucleation of He clusters and bubbles in bcc iron
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Wed May 01 00:00:00 EDT 2013
· Nuclear Instruments and Methods in Physics Research. Section B, Beam Interactions with Materials and Atoms
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OSTI ID:1234806