Journal Article

PUBDB-2014-03449

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Structural modifications of swift-ion-bombarded metallic glasses studied by high-energy X-ray synchrotron radiation

Michalik, S. (Corresponding Author)Extern* ; Michalikova, J.DESY* ; Pavlovic, M.Extern* ; Sovak, P.Extern* ; Liermann, H.-P.DESY* ; Miglierini, M.Extern*

2014
Elsevier Science Amsterdam [u.a.]

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Please use a persistent id in citations: doi:10.1016/j.actamat.2014.07.072

Abstract: Modifications of structural arrangements including relaxation processes were investigated in swift-heavy-ion-bombarded Fe73Cu1Nb3Si16B7 metallic glass. The irradiation of as-quenched amorphous ribbons was accomplished with 3 MeV u−1 (u is atomic mass unit) and 11.1 MeV u−1 Au ions with total fluences of up to 1 × 1013 ions cm−2. Specimens irradiated with 3 MeV u−1 ions were subsequently annealed for 4 h at 350 °C. Ion-irradiated samples including those heat-treated were studied using in situ temperature-dependent diffraction of high-energy X-ray synchrotron radiation (wavelength of 0.020689 nm). Cyclic heating–cooling regimes were applied during the measurements. A tendency towards a higher degree of disorder was revealed as a function of the ion fluence in both types of alloys. During the first heating–cooling cycle, a remarkable hysteresis is observed in the position and line width of the first diffraction peak, especially in the as-quenched irradiated alloys. The hysteresis increases with rising ion fluence but vanishes completely after the first heating–cooling cycle. No hysteresis is found in the irradiated and subsequently annealed alloys. The irradiation-induced structural modifications have some features similar to the effects caused by mechanical deformation.

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Contributing Institute(s):

1. DOOR-User (DOOR)
2. Experimentebetreuung PETRA III (FS-PE)

Research Program(s):

1. PETRA Beamline P02.1 (POF2-54G14) (POF2-54G14)
2. FS-Proposal: I-20110689 EC (I-20110689-EC) (I-20110689-EC)
3. CALIPSO - Coordinated Access to Lightsources to Promote Standards and Optimization (312284) (312284)

Experiment(s):

1. PETRA Beamline P02.1 (PETRA III)

Appears in the scientific report 2014

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Database coverage:
; Current Contents - Life Sciences ; Current Contents - Physical, Chemical and Earth Sciences ; JCR ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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