About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Surface Engineering IX
|
| Presentation Title |
Gradient Nanostructuring of Alloy Steel by High-Pressure Torsion for Enhanced Adhesion of Superhard Coatings and Improved Wear Performance |
| Author(s) |
Ting Roy, Kamel Ben BenNaceur, Rhea Ganguly, Megumi Kawasaki, Anil Singh, Indranil Roy |
| On-Site Speaker (Planned) |
Ting Roy |
| Abstract Scope |
Super-hard tungsten carbide (WC) coatings deposited by HVOF/HVAF are widely used to protect alloy-steel components from abrasion, erosion-corrosion, fretting, and slurry wear in severe energy-service environments. However, coating durability is often limited by substrate support, interfacial cracking, microcracking, and delamination. This work explores high-pressure torsion (HPT) as a severe-plastic-deformation route to surface-engineer alloy-steel plungers with a gradient ultrafine-grained/nanocrystalline structure prior to WC coating. HPT refinement is expected to increase near-surface hardness, introduce favorable compressive residual stress, and modify grain-boundary populations, thereby improving coating adhesion and crack resistance. Wear behavior is evaluated using ASTM G65 dry sand/rubber wheel and ASTM G105 wet sand/rubber wheel testing, supported by TEM and HAADF-STEM characterization. The approach aims to improve coating retention and extend the service life of coated plungers and related components operating under high-pressure abrasive conditions. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Temperature Materials, Surface Modification and Coatings, Nanotechnology |