| About this Abstract |
| Meeting |
2018 TMS Annual Meeting & Exhibition
|
| Symposium
|
Metal-Matrix Composites Innovations, Advances and Applications: An SMD Symposium in Honor of William C. Harrigan, Jr.
|
| Presentation Title |
Fatigue Crack Growth Resistance of Titanium Metal Matrix Composites |
| Author(s) |
Hannah Stanley |
| On-Site Speaker (Planned) |
Hannah Stanley |
| Abstract Scope |
Fatigue behaviour has been assessed in continuous SCS-6 fibre reinforced Ti-6Al-4V composites from unbridged defects at 450°C in air and vacuum. After testing, fibre push out tests were conducted at room temperature to assess the effect of fatigue on interfacial properties.
Fatigue crack growth tests revealed that increased temperatures increased fatigue crack growth rates compared with lower temperatures. Higher test temperatures also enhanced the probability of crack bifurcation. Tests in vacuum conclude that fatigue crack growth rates are reduced. All tests in vacuum grew in a single mode I manner with no signs of crack bifurcation. Push out tests revealed that the average interfacial strength increases with increasing distance from the crack plane and those tested in vacuum have lower average interfacial strengths than those in air. |
| Proceedings Inclusion? |
Planned: None Selected |