| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Cold Spray Additive Manufacturing: Part Quality and Performance
|
| Presentation Title |
Effect of Friction Stir Processing on the Microstructure and Mechanical Performance of 316L SS Cold Sprayed Deposits |
| Author(s) |
Srinivasan Nagarajan, Michael Carter, Todd Curtis, Grant Crawford |
| On-Site Speaker (Planned) |
Srinivasan Nagarajan |
| Abstract Scope |
Austenitic stainless steel cold spray depositions performed using nitrogen carrier often suffer from poor adhesive and cohesive strengths, which limits their application for structural coatings and repairs. This work focuses on the use of friction stir processing, in conjunction with additional post processing methods, to enhance the mechanical performance of 316L stainless steel cold sprayed depositions. 316L cold spray depositions were performed using high pressure cold spray with a nitrogen carrier gas. As-deposited specimens were subjected to friction stir processing, with and without thermal pre-treatment. The mechanical properties (i.e., tensile strength, microhardness, and adhesion) of the as-sprayed, thermally treated, and friction stir processed specimens were determined and correlated to their microstructure, residual stress, and defect density. This study demonstrates superior properties achieved through friction stir processing of cold spray depositions compared to those in as-sprayed or thermally treated condition. Processing-microstructure-property relationships and the mechanisms for improved performance are also discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, Iron and Steel, Surface Modification and Coatings |