precipitation in Fe-Cr-Al alloys; Thermal aging, ion irradiation, and pre-aging effectsAbe, Yosuke 
; Sasaki, Taisuke*; Yamashita, Shinichiro 
; Okubo, Nariaki ; Ukai, Shigeharu
Cr-rich precipitation drives irradiation embrittlement of Fe-Cr-Al accident-tolerant fuel (ATF) cladding. Multi-axis atom-probe tomography on Fe-17.5Cr-
Al (
~wt.%) was performed under thermal aging, ion irradiation, and post-aging irradiation, and interpreted within a newly constructed low-temperature-anchored Fe-Cr-Al ternary thermodynamic database. We identify (i)~a 
~at.% shift between the aging and irradiation hardening-peak Al compositions at 
C, (ii)~an Al-dependent growth response of pre-aged under subsequent irradiation, and (iii)~a (Cr+Al) compositional sum rule in . These multi-axis benchmarks target ternary-extended phase-field models that explicitly couple vacancy transport with local Al concentration.
Language |
: | English |
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Volume |
: | 632 |
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Pages |
: | p.156940_1 - 156940_17 |
Publication Year/Month |
: | 2026/10 |
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: |
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Keywords |
: | no keyword |
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Percentile:0.00 Category:Materials Science, Multidisciplinary |
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