Saved in:
| Main Authors: | , , , , , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2026
|
| Subjects: | |
| Online Access: | https://arxiv.org/abs/2603.02651 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866915830854320128 |
|---|---|
| author | Xing, Bin Xie, Bijun Zou, Wanjuan Lang, Eric Boltynjuk, Evgeniy Chen, Hangman Short, Michael P Tynan, George Rupert, Timothy J Trelewicz, Jason Hahn, Horst Uberuaga, Blas P Hattar, Khalid Cao, Penghui |
| author_facet | Xing, Bin Xie, Bijun Zou, Wanjuan Lang, Eric Boltynjuk, Evgeniy Chen, Hangman Short, Michael P Tynan, George Rupert, Timothy J Trelewicz, Jason Hahn, Horst Uberuaga, Blas P Hattar, Khalid Cao, Penghui |
| contents | The accumulation and growth of vacancy clusters under irradiation is a pivotal degradation mode for structural materials in extreme environments. Even tungsten undergoes rapid defect coarsening compromising its integrity. Here we show a tungsten multicomponent alloy that effectively fragments the vacancy diffusion network, kinetically trapping defects within localized domains. This effect originates from a broad spectrum of migration barriers and substantial vacancy-jump heterogeneity, which drives the interconnectivity of diffusion paths below the percolation threshold. Starving clusters of the necessary vacancy supply, irradiation experiments and atomic-scale defect characterizations confirm negligible defect growth as radiation doses increase by four orders of magnitude. These results provide a fundamental paradigm for percolation-engineered kinetics, offering a predictive pathway for tailoring defect diffusion and discovering inherently radiation-tolerant materials. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_02651 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Fragmenting Diffusion Pathways Confers Extraordinary Radiation Resistance in Refractory Multicomponent Alloys Xing, Bin Xie, Bijun Zou, Wanjuan Lang, Eric Boltynjuk, Evgeniy Chen, Hangman Short, Michael P Tynan, George Rupert, Timothy J Trelewicz, Jason Hahn, Horst Uberuaga, Blas P Hattar, Khalid Cao, Penghui Materials Science The accumulation and growth of vacancy clusters under irradiation is a pivotal degradation mode for structural materials in extreme environments. Even tungsten undergoes rapid defect coarsening compromising its integrity. Here we show a tungsten multicomponent alloy that effectively fragments the vacancy diffusion network, kinetically trapping defects within localized domains. This effect originates from a broad spectrum of migration barriers and substantial vacancy-jump heterogeneity, which drives the interconnectivity of diffusion paths below the percolation threshold. Starving clusters of the necessary vacancy supply, irradiation experiments and atomic-scale defect characterizations confirm negligible defect growth as radiation doses increase by four orders of magnitude. These results provide a fundamental paradigm for percolation-engineered kinetics, offering a predictive pathway for tailoring defect diffusion and discovering inherently radiation-tolerant materials. |
| title | Fragmenting Diffusion Pathways Confers Extraordinary Radiation Resistance in Refractory Multicomponent Alloys |
| topic | Materials Science |
| url | https://arxiv.org/abs/2603.02651 |