| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Composition–Processing–Microstructure-Property Relationships of Titanium Alloys
|
| Presentation Title |
Laser Shock Processing of Titanium Alloys: Microstructure Evolution and Enhanced Engineering Performance |
| Author(s) |
Bo Mao, Shuangjie Chu, Qian Liu, Qifei Zhang |
| On-Site Speaker (Planned) |
Bo Mao |
| Abstract Scope |
Laser shock processing (LSP) is an advanced laser-based surface processing technique which has been widely utilized to enhance the engineering performance of metallic materials. Recent research progress has demonstrated LSP can improve the surface wear resistance, fatigue durability, and biocompatibility of Ti alloys. However, the processing-microstructure-property relationship remains unclear due to the complex microstructural response of Ti alloys subjected to ultra-high strain rate plastic deformation (~106/s) during LSP. This presentation will focus on the dislocation dynamics, twinning behavior, and stress-induced phase transformation of CP-Ti and Ti6Al4V alloy processed by LSP. It is found that Ti alloys exhibit distinct mechanical response and microstructure features during LSP. Moreover, surface patterning could be fabricated on Ti alloys during LSP and help to improve the biocompatibility. The mechanism of improved surface hardness, stress corrosion resistance, and biocompatibility of Ti alloys processed by LSP will be discussed. |