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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Magnetics and the Critical Materials Challenge: An FMD Symposium Honoring Matthew J. Kramer
Presentation Title Far-from-equilibrium Materials Processing
Author(s) Jeffrey E. Shield
On-Site Speaker (Planned) Jeffrey E. Shield
Abstract Scope One approach to developing new materials, or optimizing existing materials, is by using far-from-equilibrium processing to create materials which are either metastable or difficult-to-obtain equilibrium phases. With respect to permanent magnet materials, two examples are MnAl and FeNi. Both relevant phases form in the L10 structure, but in MnAl the phase is metastable while in FeNi it is stable but difficult (impossible?) to form. In this paper, we will use inert gas condensation to produce nanoparticles in these and other alloys in order to produce magnetic materials. Modifying the plasma characteristics can promote either highly disordered structures, enabling diffusion or transitions to metastable or non-equilibrium phases, or in-plasma annealing that promotes atomic rearrangements in situ. Indications of L10 formation in FeNi have been observed in as-deposited Fe-Ni nanoparticles. In other alloy systems, the significant extension of solid solubility far beyond achievable by other processing methods provide pathways to new materials.
Proceedings Inclusion? Planned:
Keywords Magnetic Materials, Nanotechnology, Characterization


A Solution to the Permalloy Problem
Challenges in Affordable, Reliable Permanent Magnets
Controlling First-order Magnetic Phase Transitions in Rare-earth Intermetallics
Critical Materials Challenges in ThMn12-type Hard Magnetic Alloys for Permanent Magnets
Developing Substitutes for Magnetic Alloys
Far-from-equilibrium Materials Processing
From High-throughput Synchrotron Diffraction to Closed-loop Autonomous Materials Discovery
Giant Saturation Magnetization of Fe-based Soft Magnetic Amorphous Alloy by Introducing Nitrogen
HDDR Treatment on Nd2Fe14B-based Magnets in the Presence of an Applied Magnetic Field
Iron Nitride: a Non-rare-earth Containing Permanent Magnet
Like Poles Attraction and Unlike Poles Repulsion - Science Behind the Mystery
Magnetoelastic Interactions Reduce Hysteresis in Soft Magnets
Mechanically Strengthened Heterogeneous Sm-Co Sintered Magnets
Microstructural Evolutions, Phase Transformations and Hard Magnetic Properties in Polycrystalline Ce-Co-Fe-Cu Alloys
Nanocomposite Soft Magnetics: Applications, State-of-art, and Emerging Trends
Structure and Magnetic Properties of Galfenol Nanocomposite Alloys
Synthesis and Characterization of Rare-earth-based Metallic Glasses
Synthesis and Stabilization of Magnetic Nanoparticles of Rare-earth Metal Alloys
Utilizing High Energy X-rays to Perform In Situ observations of Alnico Spinodal Evolution

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