| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Ultrafine-grained and Heterostructured Materials (UFGH XI)
|
| Presentation Title |
Mechanical Properties and Microstructure Evolution of Multilayered Al-Cu Hybrid Materials Produced by High-pressure Torsion |
| Author(s) |
Piotr Bazarnik, Barbara Romelczyk-Baishya, Jiaoyan Dai, Yi Huang, Małgorzata Lewandowska, Terence G. Langdon |
| On-Site Speaker (Planned) |
Piotr Bazarnik |
| Abstract Scope |
High-pressure torsion (HPT) was used to produce nanostructured multilayered hybrid Al-Cu systems. Three-layered blocks of Al/Cu/Al and Cu/Al/Cu were subjected to up to 200 revolutions of HPT. Both systems were examined by X-ray diffraction, scanning and transmission electron microscopy (SEM-TEM), energy dispersive spectrometry (EDX), microhardness measurements and tensile tests. The SEM and TEM observations revealed the formation of nano-layered structures in both configurations but they differed significantly in terms of grain size, which was smaller for the Al/Cu/Al system. XRD and selected area electron diffraction (SAED) analysis confirmed the formation of intermetallic CuAl2 and Cu9Al4 phases, whose fraction was higher for the Al/Cu/Al system. Higher microhardness (500 Hv) was obtained for the Al/Cu/Al system. The results demonstrate that HPT offers a significant opportunity for producing novel nanostructured Al-Cu multilayered composites with unique mechanical properties. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume; Planned: Supplemental Proceedings volume |