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Meeting 2023 TMS Annual Meeting & Exhibition
Symposium Deformation-induced Manipulation of Defect Structures and Hierarchical Microstructures
Presentation Title Self-lubricating Ni-based Superalloy Composites Processed by Severe Plastic Deformation
Author(s) Manoel Kasalo, Sebastian Suarez, Andrea Bachmaier
On-Site Speaker (Planned) Manoel Kasalo
Abstract Scope Low friction and high wear resistance can result in a prolonged operating lifespan of mechanically stressed components. Both characteristics could be achieved in nanostructured self-lubricating metal matrix composites, by adjusting the matrix microstructure and the lubricant integration to it. In this work, high-pressure torsion (a severe plastic deformation technique) was used to incorporate solid lubricants (e.g., Graphite, MoS2) in different quantities into Ni-based superalloys. The aim is to determine which amount of solid lubricant and which deformation parameters ensure an improvement of the tribological performance, without compromising the mechanical properties of the composites. A better distribution of the solid lubricant phase was observed by scanning electron microscopy when the powders were colloidally mixed before the deformation process. Mechanical properties were evaluated by micro tensile tests and microhardness measurements, observing increased values in the latter. The self-lubricity of the composites was investigated by using a ball-on-flat tribometer.
Proceedings Inclusion? Planned:
Keywords Other, Other, Other

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A Novel Warm Rolling Induced Microstructure Modification for Evading Strength-Ductility Trade-off in Medium Manganese Steel
Deformation Induced Hierarchical Twinning in Titanium Alloys
Deformation Mechanisms in Cu-Nb Nanolayered Composite under Pico-indentation and Tribological Testing
Deformation of Fe-Rich, Co-Free Multi-Principal Element Alloys at Multiple Strain Rates and Temperature Conditions
Dynamically Reversible Shear Transformations in a CrMnFeCoNi High-entropy Alloy
Effect of Pre-straining on High Strain Rate Compression Behavior of a Complex Concentrated Alloy Exhibiting Transformation Induced Plasticity
Exploiting Hydrogen Segregation Effects for Controlling Microstructure Evolution
Exploring Joining Mechanism for Immiscible System: Friction Stir Welding of Pure Mg and Pure Fe
Grain Refinement and Microstructural Evolution in AM High Entropy Alloys through SPD and Thermomechanical Processing
Microstructural Inelastic Deformation and Fracture Modes in Crystalline Materials
Nanostructural Hierarchy in Metallic Materials for Extended High Temperature Stability
Phase Stability in Alloys during Severe Plastic Deformation in the High Strain Limit
Processing Heterostructures Using Deformation Techniques
Role of Cold Sprayed Microstructure on Tensile and Fatigue Behavior for AA7075
Self-lubricating Ni-based Superalloy Composites Processed by Severe Plastic Deformation
The Role of Deformation Induced Defects on Phase Evolution in High Entropy Alloys
Under Pressure - Exploring the Synergy of High Pressure Deformation Mechanisms of Metals and Rocks
Universal Trend in the Non-Equilibrium Evolution of Metastable Grain Boundaries at Extreme Conditions

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