About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Surface Engineering VIII
|
| Presentation Title |
Mechanically Tailoring Surface Properties through Patterned Peening for Enhanced Strength and Fatigue Life |
| Author(s) |
Josh Clayton, Oliver Fowler, Joby Anthony, Mark Atwater |
| On-Site Speaker (Planned) |
Mark Atwater |
| Abstract Scope |
Mechanical surface hardening by methods such as shot peening and surface mechanical attrition treatment (SMAT) have been used for years to induce grain refinement and residual compressive stress at the surface of a metal component. This is often applied to increase the reliability of the component by resisting crack formation in the surface during cyclic loading. Despite successful long-term use, there are few examples of directly controlling and quantifying the peening process. Here, we apply the method of position and energy controlled SMAT (PECSMAT) to accomplish both by prescribing the location and energy of impacts to dictate component properties. This method enables fundamental scientific inquiry and practical implementation at scale. We demonstrate advantages over randomized impact, significant improvements in fatigue life, and unique microstructural control through computational evaluation and traditional and in-situ experimental investigations. These results are discussed in the context of their gradient nanograin counterparts. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Process Technology, Characterization, Surface Modification and Coatings |