Radiation-sustained nanocluster metastability in oxide dispersion strengthened materials

A review of the irradiation evolution of dispersed oxide nanoparticles in the b.c.c. Fe-Cr system: Current understanding and future directions

“…It is suggested that composition changes, specifically the increase in Y:Ti ratio, drive the NPs toward Y 2 Ti 2 O 7 stoichiometry [9]. Additional chemical changes induced by irradiation and observed by several researchers include Cr enrichment at NPs [29], [30], and loss or depletion of Al from NPs [16], [20]. The Cr enrichment is attributed to radiation-induced segregation ( Figure 3a).…”

The Mechanism of Radiation-Induced Nanocluster Evolution in Oxide Dispersion Strengthened and Ferritic-Martensitic Alloys

“…Ti ratio has been observed to both increase in some studies [8,9,59,67,88,104,114,116], and decrease in others [81,89,102,116,123,124], while the (T+Ti):O ratio is typically observed to remain the same [8,9,116]. A summary of literature data providing evolution information for these two ratios is provided in Figure 2 Cr enrichment at the interface of nanoclusters [107,112], or depletion of Al from nanoclusters [88,104]. Enrichment of Cr is usually attributed to radiation-induced segregation of Cr to sinks such as the oxide nanoclusters [112,122].…”

“…A summary of literature data providing evolution information for these two ratios is provided in Figure 2 Cr enrichment at the interface of nanoclusters [107,112], or depletion of Al from nanoclusters [88,104]. Enrichment of Cr is usually attributed to radiation-induced segregation of Cr to sinks such as the oxide nanoclusters [112,122]. …”