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Meeting 2025 TMS Annual Meeting & Exhibition
Symposium Neutron and X-ray Scattering in Materials Science and Engineering
Presentation Title Elucidating the phase evolution of a spinodal Au-Pt-Pd alloy using in situ synchrotron X-ray diffraction
Author(s) James Hogg, Ming En Pek, Hannah Cole, George Wise, Catherine Dejoie, Nicholas Jones, David Collins, Howard Stone
On-Site Speaker (Planned) James Hogg
Abstract Scope Age-hardenable Au-Pt alloys are widely used in viscose rayon spinnerets due to their excellent corrosion resistance in sulfuric acid. However, such alloys are constrained to compositions with sufficiently wide solution treatment windows for reliable processing. This limits the attainable strength and thus the resistance to the abrasive action of dye particles in the viscose solution. In the present work, a ternary Au-Pt-Pd alloy with a superior balance of strength and processibility has been developed. To understand the microstructural origins of strengthening and guide ageing treatments, its phase evolution at a range of temperatures has been characterised in situ by high resolution synchrotron X-ray diffraction. The high angular resolution enabled deconvolution of the diffraction signals due to spinodal decomposition from those due to deleterious discontinuous precipitation of the two equilibrium cubic phases. The temporal evolution of the diffraction data is discussed in terms of the fundamental theories of the respective phenomena.
Proceedings Inclusion? Planned:
Keywords Phase Transformations, Characterization, Other

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Anomalous Neutron Nuclear-Magnetic Interference Spectroscopy
Application of energy-dispersive X-ray diffraction for engineering alloys
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Characterization of Radiation Effects in Ceramics with Neutron Total Scattering
Effects of Cooling Rates on Residual Stress Evolution Quantified via Neutron Diffraction in Lubricant-free, Solid-state Repaired AA7075
Elucidating the phase evolution of a spinodal Au-Pt-Pd alloy using in situ synchrotron X-ray diffraction
Enhanced magnetic-disorder driven magnon softening of TbSb via Y-doping
Feasibility of a Focusing Small-Angle Neutron Scattering (SANS) Instrument at the MIT Nuclear Reactor Laboratory
From Angstroms to Micrometers: Across-length-scale Structural Characterization of Hard Materials via X-ray Scattering
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Impact of electric fields on local structure, phonons, and thermal transport in a relaxor ferroelectric
In-situ and multimodal capabilities of Laue diffraction instrument at 34-ID-E of the Advanced Photon Source
In-situ characterization of phase transformation dynamics in fusion-based metal additive manufacturing processes by high-speed X-ray diffraction
In situ X-ray diffraction reveals the early stages of solid phase alloying in the 7XXX Al alloy system
Influence of Selective Laser Preheating on Residual Stress in Ti-6Al-4V Laser Powder Bed Fusion (LPBF)
Investigating Thermal Transport in Nuclear Materials Using Neutron Scattering
Load Partitioning in Eutectic and Near-eutectic Ni-Ce Alloys
Machine Learning Models For X-ray Diffraction Temperature Inference
Mapping of the local residual stress in 316L stainless steel processed by laser powder bed fusion
Measurement of Residual Stress in Additively Manufactured Ti-6Al-4V & Ti-6Al-2Sn-4Zr-6Mo Walls using Neutron Diffraction
Operando inelastic neutron scattering measurements of glass dynamics
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Overview of science capabilities of VENUS neutron imaging beamline at the Spallation Neutron Source at Oak Ridge National Laboratory
Phonon Dynamics and Thermal Transport in Tl3VSe4
Planar thermal transport mapping of the GaN film with Spatial-Temporal-Resolved X-ray diffraction
Probing Ionic Diffusion with Single Crystal Diffuse and Quasielastic Neutron Scattering
Rationalization of non-uniform radial hardness distribution in friction self-piercing riveted Al-7075 using x-ray scattering and advanced microscopy techniques
Redistribution of Residual Stress in Steels during Hybrid Manufacturing
Residual Strain Monitoring by Neutron Diffraction in Metal Additive Manufacturing
Scattering study of spin-lattice interactions in chromia
The development of a stress-strain diffractometer at the MIT Reactor using a polychromatic beam
The influence of grain size on the deformation-induced martensitic transformation in austenitic steels: from grain-average to single-grain behavior studied by in-situ high-energy synchrotron X-ray diffraction.
The Invar Effect Explained by Nuclear Resonant X-ray Scattering from Phonons and Spins
The Role Of Annealing And Grain Boundary Controls On The Mechanical Properties Of Limestones, Marbles And Novaculite
The Role of Vibrational Entropy Across Magnetostructural Transition in Heusler Alloys
The use of neutron diffraction for the understanding of additive manufacturing process of magnesium alloys
Time resolved synchrotron X-ray diffraction study of the structural and mechanical evolutions within a zirconium alloy oxidized at high temperature
Unveiling multiscale structure and dynamics with neutron imaging
Vibrational thermodynamics of the giant elastocaloric effect in NiCoMnTi alloys

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