Radiation resistance of oxide dispersion strengthened alloys: Perspectives from in situ observations and rate theory calculations. (15th April 2018)

• Record Type: Journal Article
• Authors: Liu, Xiang; Miao, Yinbin; Li, Meimei; Kirk, Marquis A.; Zhang, Guangming; Ukai, Shigeharu; Maloy, Stuart A.; Stubbins, James F.
• Is Part Of: Scripta materialia. Number 148(2018)
• Page Start: 33
• Page End: 36
• Publication Date: 2018-04-15
• Subjects: Oxide dispersion strengthened (ODS) alloy -- Dislocation structure -- Microstructure -- Transmission electron microscopy -- Radiation enhanced diffusion (RED); Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2018.01.018
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: Here, in situ ion irradiation and rate theory calculations were employed to directly compare the radiation resistance of an oxide dispersion strengthened alloy with that of a conventional ferritic/martensitic alloy. Compared to the rapid buildup of dislocation loops, loop growth, and formation of network dislocations in the conventional ferritic/martensitic alloy, the superior radiation resistance of the oxide dispersion strengthened alloy is manifested by its stable dislocation structure under the same irradiation conditions. The results are consistent with rate theory calculations, which show that high-density nanoparticles can significantly reduce freely migrating defects and suppress the buildup of clustered defects. Graphical abstract: Unlabelled Image