Surface orientation dependence of irradiation-induced hardening in a polycrystalline zirconium alloy. (15th March 2019)

• Record Type: Journal Article
• Authors: Yang, H.L.; Kano, S.; McGrady, J.; Shen, J.J.; Matsukawa, Y.; Chen, D.Y.; Murakami, K.; Abe, H.
• Is Part Of: Scripta materialia. Number 162(2019)
• Page Start: 209
• Page End: 213
• Publication Date: 2019-03-15
• Subjects: Zr alloy -- Electron backscatter diffraction (EBSD) -- Irradiation hardening -- Nanoindentation -- Crystal orientation; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2018.11.029
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: A combination of ion-accelerator irradiation, nanoindentation tests, and electron backscatter diffraction analysis was utilized to probe the crystal orientation dependence of irradiation-induced hardening in a Zr alloy. The nanohardness at the [0001] orientation exhibited the highest value, which gradually decreased when the orientation deviated from the [0001] axis to the [ 10 1 ¯ 0 ] and 2 1 ¯ 1 ¯ 0 axes, regardless of the irradiation dose. Crystal-orientation-dependent irradiation-induced hardening is further confirmed. The lowest hardening was observed at [0001] orientation, and the hardening effect intensified toward the [ 10 1 ¯ 0 ] and [ 2 1 ¯ 1 ¯ 0 ] orientations, reaching the maximum at a rotation angle of ~55° with respect to [0001]. Graphical abstract: Unlabelled Image