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Meeting 2024 TMS Annual Meeting & Exhibition
Symposium Ultrafine-grained and Heterostructured Materials (UFGH XIII)
Presentation Title Synthesis of Ti-TiAl3 Metal -- Intermetallic Nanolaminates via Accumulative Roll Bonding and Annealing
Author(s) Thomas J. Nizolek, Rodney McCabe, Yifan Zhang, Carl Osborn, Sean Raybon
On-Site Speaker (Planned) Thomas J. Nizolek
Abstract Scope A major limitation of using accumulative roll bonding (ARB) to produce dual-phase lamellar composites is that the constitutive properties of both phases must be well matched to ensure co-deformation during processing. As a result, most ARB-processed nanolaminates are ‘poor’ composites in the traditional sense, being characterized by only a slight mismatch in stiffness, strength, or ductility between the phases. An alternative approach is to perform ARB using reactive, intermetallic-forming metals and grow controlled fractions of a high-strength intermetallic at the interfaces after processing. While the processing window for producing nanolaminates from reactive metal pairs is narrow, we have developed methods for ARB processing Ti-Al composites to nanoscale layer thicknesses and use post-ARB annealing to create titanium/titanium-aluminide nanolaminates. TiAl3 formation is observed to follow a parabolic growth rate and can impart high compressive yield strengths (3 GPa), enabling the formation of nanoscale metal-intermetallic composites with exceptionally high specific stiffness and strength.
Proceedings Inclusion? Planned:
Keywords Titanium, Mechanical Properties, Composites


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Plastic Deformation Processing of Heterostructured Materials: An Overview
Severe Plastic Deformation of Metal Nanoparticles
Structural Characterization and Thermal Evolution of Severe Plastic Deformation Processed Materials by Advanced Synchrotron and Neutron Methods
Synthesis of Ti-TiAl3 Metal -- Intermetallic Nanolaminates via Accumulative Roll Bonding and Annealing
Temporary Alloying with Hydrogen to Create Hierarchical Microstructures in Titanium Alloys
Tensile Deformation Behavior of a Nanocrystalline Cu-2.7at.%Zr Supersaturated Solid-Solution Alloy Processed by the High-Pressure Torsion
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