About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Surface Engineering IX
|
| Presentation Title |
Modeling the Effect of Impact Angle on Surface Roughness during Vibratory Peening of Ti-6Al-4V |
| Author(s) |
Benjamin St-André |
| On-Site Speaker (Planned) |
Benjamin St-André |
| Abstract Scope |
Vibratory peening (VP) is a mechanical surface treatment that combines conventional shot peening (SP) and vibratory finishing (VF) to reduce the cost and manufacturing time of metallic components. The treatment reduces surface roughness and induces a compressive residual stress (CRS) layer near the surface of the material. However, the literature mostly ignores its impact on complex or angled geometries. This work aims to determine the influence of angled geometries in VP through experimental trials on the Ti-6Al-4V alloy. The experimental setup consists of a vertically vibrating tub filled with steel media, a fixture holding the workpiece immersed within the tub and a water-based lubricant fed in through an open-flow loop. Specimens were processed at angles of 90° and 30° for durations up to 60 minutes. Prior to treatment, their surfaces were polished and ground with 120-grit sandpaper. Profilometry has been used to measure the surface roughness parameters. Results indicate that the samples’ roughness decreases rapidly and then saturates by the 60-minute mark. Peening reduced the average Ra value by 63%. Specimens at 30° were 44% rougher than the perpendicular specimens (90°) and their standard deviation exhibited a similar trend. An analysis of variance revealed that the specimen angle only influences the Rz and Rsk parameters. An empirical equation was developed to predict the final roughness of the angled samples. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Surface Modification and Coatings, Titanium, Mechanical Properties |