About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Advances in Surface Engineering IV
|
Presentation Title |
Tribological and Wetting Behavior of Laser Shock Peened High Pressure Cold Sprayed (HPCS) Duplex 316L Stainless Steel |
Author(s) |
Alessandro Mauricio Ralls, Bo Mao, Mohammadreza Daroonpravar , Pradeep L. Menezes |
On-Site Speaker (Planned) |
Alessandro Mauricio Ralls |
Abstract Scope |
In this work, the effect of laser shock peening (LSP) as a post-surface processing technique for high-pressure cold-sprayed (CS) duplex 316L stainless steel (SS) was investigated. It was found that the severe plastic deformation induced from the plasma pressure resulted with surface work-hardening which consequentially improved the tribological behavior of the specimens. The surface integrity of the CS deposits were also largely preserved due to the already work-hardened surfaces induced from the CS process. In fact, despite small change in surface roughness, the surface energies of the LSP substrates were decreased as a function of laser intensity. It was found that the air pockets from the modified surface morphology was the primary factor for improved wettability as per the Cassie-Baxter model. Based on these results, LSP has been determined as a useful method to enhance the surface properties of CS 316L SS deposits. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Surface Modification and Coatings, Mechanical Properties |