|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Nanocomposites V: Structure-Property Relationships in Nanostructured Materials
||The Effects of Nano-Al4C3 on Precipitation Hardening and Mechanical Behaviors in Al-5.5Cu Composites
||Daeyoung Kim, Jun Yeon Hwang, Hyunjoo Choi
|On-Site Speaker (Planned)
Lightweight-metal matrix composites reinforced by nano-carbon materials have been of interest because of their high specific strength. However, it is difficult to produce these composites via conventional metallurgical routes because of difficulties in dispersion of nano-carbon materials. In this study, nano-Al4C3/Al-5.5Cu composites were produced via casting followed by rolling, which can be applied for industrial manufacturing processes. To prevent the floatation of carbon on molten Al, Cu/few layer graphene (FLG) pellet was used as a precursor, wherein FLG, initiated from graphite powder, was mechanically dispersed in Cu powder by ball-milling. During casting, Cu/FLG pellet was decomposed in molten Al. After that, Cu was dissolved in Al to form alloys and FLG was decomposed to be transformed to nano-scale Al4C3. The as-cast composites were subjected to cold rolling and then heat treated for recrystallization and ageing. The effects of nano-Al4C3 and precipitates on mechanical properties of the composites will be discussed.
||Planned: Supplemental Proceedings volume