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The effects of swift Xe ion bombardment on the amorphous structure of a VITROPERM type alloy

DOI: 10.1016/j.jallcom.2019.04.328 DOI Help

Authors: Š. Michalik (Diamond Light Source) , M. Cesnek (Czech Technical University in Prague) , M. Pavlovič (Slovak University of Technology in Bratislava) , M. Miglierini (Czech Technical University in Prague; Slovak University of Technology in Bratislava)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Journal Of Alloys And Compounds , VOL 795 , PAGES 69-78

State: Published (Approved)
Published: May 2019
Diamond Proposal Number(s): 14465

Abstract: Influence of swift Xe ion irradiation (ion energy of 11.1 MeV/u, ion fluences from 2.5 × 1012 to 1.0 × 1013 ions/cm2) on the local structural arrangement of a VITROPERM alloy is investigated using synchrotron-based X-ray diffraction, Fe and Nb K-edge X-ray absorption spectroscopy, and 57Fe Mössbauer spectroscopy techniques. The obtained data show an increase of structural disordering due to ion bombardment. However, no alterations in pairwise interatomic lengths are observed. The irradiation-induced structural modifications can be removed by an appropriate post-irradiation heat treatment. We suggest that the microscopic origin of changes induced by the swift heavy ions could be similar to the structural modifications caused by severe plastic deformation.

Journal Keywords: Ion impact; X-ray diffraction; EXAFS; Mössbauer spectroscopy; Metallic glasses

Subject Areas: Materials, Physics

Instruments: I12-JEEP: Joint Engineering, Environmental and Processing

Other Facilities: DESY in Hamburg.