Abstract:
Present work aims at developing Magnesium based metal matrix composite (MMC) through in-situ reaction. In-situ
generation of micro and nano particles in the Mg-melt is supposed to have a better bonding with the matrix. Ceric
ammonium nitrate (CAN) is added to initial Magnesium melt (with an aim to generate CeO2 and MgO through in-situ
reaction) at temperatures of 670 C and 870 C. The developed MMCs are solution treated to get rid of intermetallic.
The nature of particles is explored with X-ray diffraction (XRD) and Energy dispersion spectroscopy (EDS). The
morphology and sizes of particles are keenly jotted using scanning electron microscope (SEM). Mechanical responses
of developed MMCs are recorded through Hardness, Compression and scratch tests. The compression fractured
surfaces are analyzed with SEM and scratched samples are analyzed on 3 D optical profilometer to explore deformation
behavior. The observations indicate the in-situ formation of CeO2, MgO and CeMg12 intermetallic phases in different
types and sizes. Further, these particles are responsible for improved mechanical properties. The findings are supported
by the contribution of different strengthening mechanisms.
