2020
DOI: 10.1016/j.corsci.2020.108616
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A study on the surface and crack tip oxidation of alloy 600 through high-resolution characterization

Abstract: Surface, stagnant grain boundary (GB), and crack tip oxidation of Alloy 600 were studied. The mirror-finished surface oxide has a duplex structure and the formation mechanisms of each layer are discussed. A more compact oxide film is observed on the cold-worked surface, while the nano-GBs are preferentially oxidized. The crack tip oxidation rate is around four orders of magnitude faster than that of the stagnant GB, and their oxidation mechanisms are believed to be the same. Diffusion-induced grain boundary mi… Show more

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Cited by 14 publications
(1 citation statement)
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References 66 publications
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“…The Cr-Fe depleted/Ni enriched zone has been frequently reported in the study of GB oxidation [43][44][45][46][47][48][49][50][51][63][64][65][66] and SCC crack tips [19,21,22,25,34,37,38,40,41,52,53,55,56]. Due to the improvement of the characterization resolution, the Ni-rich zone has been associated with DIGM [22, 34, 38, 41, 43, 44, 46-51, 55, 56, 66].…”
Section: High-resolution Analytical Characterization Of Digm Ahead Of...mentioning
confidence: 99%
“…The Cr-Fe depleted/Ni enriched zone has been frequently reported in the study of GB oxidation [43][44][45][46][47][48][49][50][51][63][64][65][66] and SCC crack tips [19,21,22,25,34,37,38,40,41,52,53,55,56]. Due to the improvement of the characterization resolution, the Ni-rich zone has been associated with DIGM [22, 34, 38, 41, 43, 44, 46-51, 55, 56, 66].…”
Section: High-resolution Analytical Characterization Of Digm Ahead Of...mentioning
confidence: 99%