| 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 |
The Tensile Response and Fracture Behavior of a Copper-Niobium Microcomposite: Role of Surface Modification |
| Author(s) |
Paul Arindam, T.S. Srivatsan |
| On-Site Speaker (Planned) |
T.S. Srivatsan |
| Abstract Scope |
In this presentation, the influence of nanocrystalline surface modification on microhardness, tensile response and fracture behaviour of an oxide dispersion strengthened copper-niobium (Cu-Nb) micro-composite will be highlighted. The presence of a hardened surface layer and associated compressive residual stress results in a noticeable increase in micro-hardness and a marginal improvement in both stiffness and strength. The increase in work hardening is quantified by the monotonic stress versus strain curve. For both the as-provided and surface treated composites tensile fracture was macroscopically ductile and microscopically revealed features reminiscent of locally brittle and ductile failure mechanisms. The mechanical properties and fracture behaviour will be presented and discussed considering mutually interactive influences of nature of loading, deformation characteristics of the microstructural constituents and intrinsic microstructural effects. |
| Proceedings Inclusion? |
Planned: None Selected |