Correlations between the ductility and medium-range order of bulk metallic glasses
A. Davani F, Hilke S, Rösner H , Geissler D, Gebert A, Wilde G
Research article (journal) | Peer reviewedAbstract
Understanding ductility or brittleness of monolithic bulk metallic glasses requires detailed knowledge of the amorphous structure.The medium-range order (MRO) of ductile Pd40Ni40P20 and brittle Zr52.5Cu17.9Ni14.6Al10Ti5 (Vit105) was characterized prior to and afternotched three-point bending tests using variable-resolution fluctuation electron microscopy. Here, we show the presence of a second largerMRO correlation length in the ductile material, which is not present in the brittle material. The second larger correlation length accountsfor an increased heterogeneity, which seems to enable an easier shear band formation and thus explain the difference in deformability.
Details about the publication
Journal: Journal of Applied Physics
Volume: 2020
Issue: 128
Status: Published
Release year: 2020 (06/07/2020)
Language in which the publication is written: English
DOI: 10.1063/5.0007564
Keywords: bulk metallic glass; deformation; fluctuation electron microscopy; medium-range order
Authors from the University of Münster
| Abdollahzadeh Davani, Farnaz | Professorship of Materials Physics (Prof. Wilde) |
| Hilke, Sven | Institute of Materials Physics |
| Rösner, Harald | Professorship of Materials Physics (Prof. Wilde) |
| Wilde, Gerhard | Professorship of Materials Physics (Prof. Wilde) |
Projects the publication originates from
Duration: 01/03/2017 - 28/02/2020 Funded by: DFG - Individual Grants Programme Type of project: Individual project | |
Duration: 01/01/2016 - 31/12/2018 | 2nd Funding period Funded by: DFG - Priority Programme Type of project: Subproject in DFG-joint project hosted outside University of Münster |