About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
|
2020 Technical Division Student Poster Contest
|
Presentation Title |
SPG-30: Effect of Mechanical Milling and Cryomilling on Synthesis of CNT Reinforced 6082 Al Matrix Nanocomposites |
Author(s) |
Rajat Gupta, Yagnesh Shadangi, Kausik Chattopadhyay, Anil Kumar Chaubey, Nilay Krishna Mukhopadhyay |
On-Site Speaker (Planned) |
Rajat Gupta |
Abstract Scope |
The influence of mechanical milling (MM) and cryomilling (CM) on the structure, morphology, phase composition, thermal stability and mechanical properties of multi-walled carbon nanotubes (MWCNTs) reinforced AA 6082 alloys nanocomposite powders has been studied through XRD, TEM, SEM-EDS, Raman spectroscopy and indentation techniques. The MM leads to uniform distribution of CNT in the matrix and cryomilling further reduces its agglomeration and helps in embedding the CNTs into the aluminum matrix composites (AMCs) by effectively shearing the nanotubes. The broadening of diffraction peaks due to milling suggest the enhancement of lattice strain and reduction in the crystallite size. Further, attempts were made to consolidate the MM+CM AMCs by hot pressing followed by hot extrusion. The mechanical properties of AMCs were evaluated through indentation and compressive testing techniques up to 300°C. It has been observed that cyromilling helps in overcoming the problem associated with agglomeration of Al-CNT composites with enhanced mechanical properties. |
Proceedings Inclusion? |
Undecided |