| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Ultrafine-grained and Heterostructured Materials (UFGH XI)
|
| Presentation Title |
Enhanced Strength and Thermal Stability of Cu/Fe Nanolaminates |
| Author(s) |
Mathias Goken, Maher Ghanem, Heinz Werner Höppel, Benoit Merle |
| On-Site Speaker (Planned) |
Mathias Goken |
| Abstract Scope |
Accumulative roll bonding, ARB is a very attractive process to combine different metals in multilayered nano-scaled composites for advanced functional and mechanical performance. By using the ARB process up to 14 cycles, Cu/Fe nanolaminates have been processed in quite large quantities with a layer thickness below 100 nm. The lamellar microstructure of these nano-scaled composites is quite homogeneous over the whole sample volume and is retained also after thermal annealing at more than 600 °C. This clearly shows that nano-materials with exceptional thermal stability have been obtained. Furthermore, also the strength of these nano-laminates is extraordinary. The strength increases, as it is well-known from all severe plastic deformation processes, in the first ARB cycles and later saturates after 6-8 cycles, where a minimum of the grain size is reached in bulk materials. The nano-laminates, however, show after 10-12 ARB cycles again a strong second regime of increasing strength, which is explained by extra grain-refinement, since the very small layer thickness also limits the maximum grain size. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume; Planned: Supplemental Proceedings volume |