Irradiation-induced formation of nanorod precipitates in a dilute Cu–W alloy. (1st April 2016)

• Record Type: Journal Article
• Authors: Shu, Shipeng; Zhang, Xuan; Beach, John A.; Bellon, Pascal; Averback, Robert S.
• Is Part Of: Scripta materialia. Volume 115(2016)
• Page Start: 155
• Page End: 158
• Publication Date: 2016-04-01
• Subjects: Ion irradiation -- Precipitate morphology -- Self-organization -- Radiation-enhanced diffusion; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2016.01.012
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: Radiation-enhanced precipitation of W has been investigated in dilute Cu-W alloys. While spherical W precipitates are stabilized during irradiation below ~ 300 °C and above ~ 600 °C, irradiation at 500 °C results in the formation of nanorods. Furthermore, use of two-step irradiations, first one at 600 °C followed by one at 500 °C, indicates that the morphological transformation is reversible. The stabilization of W nanorods is rationalized using a model introduced by Frost and Russell to explain size stabilization of precipitates formed during irradiation, but extended here to consider precipitate morphology. Graphical abstract: