Journal Article

PUBDB-2025-04610

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Exploring the relative influence of atomic parameters on solid solution strengthening

Oliveira, P. (Corresponding author)Extern* ; Martins, C. L. G. P.Extern*XFEL.EU* ; Stumpf, G. C.Extern* ; Spadotto, J.Extern* ; Pickering, E. J.Extern* ; Botta, W. J. ; Bolfarini, C.Extern* ; Coury, F. G.

2025
Springer Nature [London]

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Please use a persistent id in citations: doi:10.1038/s41467-025-63900-6  doi:10.3204/PUBDB-2025-04610

Abstract: Developing predictive models for solid solution strengthening is a key tool inalloy design, enabling the optimization of mechanical properties. This studyaims to identify the primary factor governing solid solution strengthening,providing foundations for more accurate predictive models. In this worksingle-phase solid solution alloys are developed with differences in atomicvolume and electronegativity among constituent elements. Unlike previousstudies focusing on only one factor, this work employs alloys specificallydesigned to assess both variables simultaneously, operating at the boundaryconditions of different strengthening models. Vanadium is selected for itslarge electronegativity difference relative to nickel, while palladium is chosenfor its significant atomic volume difference. We demonstrate that atomicvolume differences play a dominant role in solid solution strengthening.Moreover, each solid solution exhibits a critical grain size below which grainrefinement influences mechanical properties more than solid solutionstrengthening. Finally, a Ni₅₀Pd₅₀ alloy is produced showing a stability ofmechanical properties with increasing grain size.

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Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)
2. Helmholtz-Zentrum Hereon (Hereon)

Research Program(s):

1. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)

Experiment(s):

1. PETRA Beamline P07 (PETRA III)
2. PETRA Beamline P02.1 (PETRA III)

Appears in the scientific report 2025

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