About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing: Design, Materials, Manufacturing, Challenges and Applications
|
| Presentation Title |
Dynamics and Mechanisms of Defect Formation in Metal Additive Manufacturing Processes |
| Author(s) |
Lianyi Chen |
| On-Site Speaker (Planned) |
Lianyi Chen |
| Abstract Scope |
Metal additive manufacturing (laser powder bed fusion and electron beam powder bed fusion) can manufacture metal components with complex geometries directly from digital models without the design constraints of traditional manufacturing routs, which has potential to revolution many industries. However, metal additive manufacturing technologies still face critical challenges of (1) hard to predict and still relying on “trial and error”, (2) containing many uncertainties, (3) low fatigue life, and (4) lack of qualification and certification. This talk will present our research on overcoming these challenges to achieve predictable, consistent and reliable additive manufacturing through revealing the transient dynamics and fundamental mechanisms of defect formation in metal additive manufacturing processes by in-situ high-speed synchrotron x-ray imaging and diffraction, as well as designing novel alloys and processing strategies based on the newly discovered mechanisms. |