| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
2024 Graduate Student Poster Contest
|
| Presentation Title |
SPG-44: Effect of Crystallographic Texture on Residual Stresses Induced during Surface Modification of Ti6Al4V Rolled Plate |
| Author(s) |
Ayobami Alice Oladipo, Likun Sun, Priam Tyagi, Meiyan Timberlake, Adam Pilchak , Matthew Steiner, Eric Payton |
| On-Site Speaker (Planned) |
Ayobami Alice Oladipo |
| Abstract Scope |
Compressive residual stresses induced by surface modification techniques such as Ultrasonic Nanocrystal Surface Modification (UNSM) and Laser Shock Peening (LSP) are known to improve fatigue lives through inhibition of fatigue crack initiation and growth. Thermomechanical processing often results in substantial crystallographic texture development in Ti-6Al-4V, a workhorse alloy in the aerospace industry. This study investigates the effects of the crystallographic texture and microstructure from plate rolling of Ti-6Al-4V on the depth and intensity of compressive residual stresses formed by UNSM and LSP treatments. Texture and residual stress are characterized using X-ray diffraction, while microstructure has been characterized using electron backscatter diffraction, optical microscopy, and scanning electron microscopy. The potential implications of crystallographic texture on fatigue performance are discussed in the context of prior publications on the effect of surface residual stress on fatigue behavior of Ti-6Al-4V. |