Abstract

The compositional dependence and influence of relaxation state on the deformation behavior of a Pt–Pd-based bulk metallic glasses model system was investigated, where platinum is systematically replaced by topologically equivalent palladium atoms. The hardness and modulus increased with rising Pd content as well as by annealing below the glass transition temperature. Decreasing strain-rate sensitivity and increasing serration length are observed in nano indentation with increase in Pd content as well as thermal relaxation. Micro-pillar compression for alloys with different Pt/Pd ratios validated the greater tendency for shear localization and brittle behavior of the Pd-rich alloys. Based on total scattering experiments with synchrotron X-ray radiation, a correlation between the increase in stiffer 3-atom cluster connections and reduction in strain-rate sensitivity, as a measure of ductility, with Pd content and thermal history is suggested.

Details

Title
Effect of composition and thermal history on deformation behavior and cluster connections in model bulk metallic glasses
Author
Neuber, Nico 1 ; Sadeghilaridjani, Maryam 2 ; Ghodki, Nandita 2 ; Gross, Oliver 3 ; Adam, Bastian 1 ; Ruschel, Lucas 1 ; Frey, Maximilian 1 ; Muskeri, Saideep 2 ; Blankenburg, Malte 4 ; Gallino, Isabella 1 ; Busch, Ralf 1 ; Mukherjee, Sundeep 2 

 Saarland University, Chair of Metallic Materials, Saarbrücken, Germany (GRID:grid.11749.3a) (ISNI:0000 0001 2167 7588) 
 University of North Texas, Department of Materials Science and Engineering, Denton, USA (GRID:grid.266869.5) (ISNI:0000 0001 1008 957X) 
 Saarland University, Chair of Metallic Materials, Saarbrücken, Germany (GRID:grid.11749.3a) (ISNI:0000 0001 2167 7588); Amorphous Metal Solutions GmbH, Homburg, Germany (GRID:grid.11749.3a) 
 Deutsches Elektronen-Synchrotron DESY, Hamburg, Germany (GRID:grid.7683.a) (ISNI:0000 0004 0492 0453) 
Publication year
2022
Publication date
2022
Publisher
Nature Publishing Group
e-ISSN
20452322
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2724089872
Copyright
© The Author(s) 2022. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.