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Meeting

2025 TMS Annual Meeting & Exhibition

Symposium

Advances in Multi-Principal Element Alloys IV: Mechanical Behavior

Presentation Title

Quantification of Lattice Distortions in Complex Concentrated Alloys by X-Ray Diffuse Scattering

Author(s)

Alexander M. deJong, Suchismita Sarker, Hyun sang Park, Todd C. Hufnagel

On-Site Speaker (Planned)

Alexander M. deJong

Abstract Scope

Many complex concentrated alloys have interesting mechanical properties that are often attributed to distortions of the underlying lattice. However, there is a dearth of detailed quantitative experimental evidence regarding the nature and extent of these lattice distortions. To address this issue, we have performed diffuse x-ray scattering measurements on bulk single crystals of several alloys of increasing compositional complexity, including Ni, FeNiCo, and FeNiCoCr. We interpret the results in terms of three-dimensional pair distribution functions (3D- ΔPDFs) and the corresponding lattice distortions. Finally, we discuss the implications of these measurements for understanding the effect of lattice distortions on mechanical behavior of complex concentrated alloys.

Proceedings Inclusion?

Planned:

Keywords

High-Entropy Alloys, Mechanical Properties, Other

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