| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Low-cost Titanium: 'Affordable Ti'
|
| Presentation Title |
Electroplastic Effects in a Dilute Ti-Al Alloy |
| Author(s) |
Shiteng Zhao, Ruopeng Zhang, Andrew Minor |
| On-Site Speaker (Planned) |
Shiteng Zhao |
| Abstract Scope |
For decades, it has been known that the application of a high-density direct current pulses can significantly alter the mechanical properties of metals.We performed a series of electrically biased tensile tests using a Ti-7 at. % Al alloy under a current density of 0.5X103 A/cm2. The temperature during the testing was monitored by an infrared camera and only a neglectable temperature rise was observed. It is shown that the tensile ductility of the materials is increased by the electrical pulsing. Postmortem microstructure characterization shows an increased number of {10-12} tensile twins in the electrical-pulsing deformed sample, which is similar to its cryogenic behavior.The twinning induced plasticity, which is most likely to occur during the late stage of deformation, is considered to be responsible for the prolonged ductility of the materials. This work demonstrates that electrical pulsing can potentially be used as a cost-effective way of materials processing for Ti-Al alloys. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |