About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Dynamic Behavior of Materials IX
|
Presentation Title |
In-Situ X-ray Diffraction Shock Experiments on Titanium Diboride |
Author(s) |
Cyril Williams |
On-Site Speaker (Planned) |
Cyril Williams |
Abstract Scope |
Titanium diboride (TiB2) exhibits numerous excellent properties such as high melting point and high elastic modulus. The shock wave velocity profile of TiB2 reveals an anomalous double cusps with the first appearing between 4.2 GPa and 5.8 GPa, the second between 9.0 GPa and 17.0 GPa. Numerous shock wave research studies have being conducted to elucidate the cause for both cusps and one such study clearly shows that failure waves are only active between both cusps. To further explore the two cusps phenomenon, in-situ XRD shock experiments were conducted between the two cusps at 7.2 GPa shock stress, just above the second cusp at 15.6 GPa shock stress, and at 38.2 GPa shock stress. The acquired results not only confirmed that failure waves are active between both cusps but also suggest dilatancy. The experimental evidence show that both processes do not operate above the second cusp. |
Proceedings Inclusion? |
Planned: |
Keywords |
Ceramics, Mechanical Properties, Other |