| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
|
| Symposium
|
Processing and Performance of Materials Using Microwaves, Electric and Magnetic Fields, Ultrasound, Lasers, and Mechanical Work: The Rustum Roy Symposium
|
| Presentation Title |
Electric Current Processing of Additively Manufactured Ti-6Al-4V Alloy |
| Author(s) |
Daudi R. Waryoba, Zahabul Islam, Ted Reutzel, Aman Haque |
| On-Site Speaker (Planned) |
Daudi R. Waryoba |
| Abstract Scope |
Structure-property-processing relationship has been studied in additively manufactured Ti-6Al-4V alloy. The processing was performed in-situ a transmission electron microscope (TEM) using a moderate current density of 5x105 A/cm2, and by suppressing Joule heating such that mechanical properties were not compromised. The results show that while the grain size increased by ~15%, the nanohardness increased by 16%. This is attributed to the pronounced dislocation generation, regeneration, and clustering as well as defect healing. Ultimately, there is a reduction in the residual strain and a significant increase in the intrinsic strength as evidenced by the high Taylor factor of the electric current processed specimen. This novel processing technique presents an alternative pathway for active controlling of microstructure and internal defects for additively manufactured parts that might be sensitive to high temperature processing or other conventional methods. |