Kinetic interplay between chemical short-range order and grain boundaries in NiCoCr alloys under irradiation
Abstrak
Chemical short-range order (CSRO) and grain boundary (GB) engineering are routes to enhance radiation damage tolerance in alloys. Here, we reveal that CSRO and GB interact in a sink-strength-dependent manner under irradiation in NiCoCr. Near a weak sink (Σ3 GB), CSRO reduces defect cluster growth by slowing interstitial diffusion and enhancing vacancy-interstitial recombinations. In contrast, near strong sinks such as Σ5 GBs, CSRO and GB act competitively for interstitial accumulation but synergistically to suppress large stacking-fault tetrahedra growth via enhanced recombination. Such mechanistic duality underscores the need for coordinated control of CSRO stability and GB sink strength to enhance radiation damage tolerance.
Topik & Kata Kunci
Penulis (7)
Hyeonwoo Kim
Ho Lee
Kanghyeon Kim
Yue Fan
Sangtae Kim
Miaomiao Jin
Yang Yang
Akses Cepat
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Cek di sumber asli →- Tahun Terbit
- 2026
- Sumber Database
- DOAJ
- DOI
- 10.1080/21663831.2026.2644262
- Akses
- Open Access ✓