About this Abstract |
Meeting |
MS&T22: Materials Science & Technology
|
Symposium
|
Development in Light Weight Alloys and Composites
|
Presentation Title |
Development of Functionally Graded Al Metal Matrix Hybrid Composite Reinforced with CNT ,Y2O3 & SiC through PM Route |
Author(s) |
Rajat Gupta, Kausik Chattopadhyay, Nilay Krishna Mukhopadhyay |
On-Site Speaker (Planned) |
Rajat Gupta |
Abstract Scope |
In the present study light-weight high strength hybrid reinforced Al metal matrix composite (MMC) is fabricated through powder metallurgy. Effect of CNT ,Y2O3 & SiC reinforcements in Al matrix has been studied to investigate their influence on the structure, morphology, phase composition, thermal stability and mechanical properties. Continuous variation of CNT and Y2O3 (0-2.5 wt%) were done simultaneously to prepare a graded structure upon consolidation. Characterizations were done through XRD, TEM, SEM-EDS and indentation. The milling time of more than 20 hrs leads to uniform distribution of CNT and further cryomilling (CM) with ball to powder ratio of 100:1 reduced its agglomeration along with effective cleaving of nanotubes and reducing the entanglements. XRD analysis shows feasible reaction products that were formed during processing. The CM of MMCs effectively helps in overcoming the problem associated with agglomeration and hybrid graded structure significantly reduces the CTE issues with existing Al based MMCs. |