Magnesium nanocomposites with 0.1, 0.2, 0.3 and 0.4 volume percentages of MgO were synthesized using the powder metallurgy technique. The nanocomposite billets obtained were subsequently hot extruded at a temperature of 350 °C with an extrusion ratio of 20.25:1. The extruded nanocomposites were characterized for their microstructural, physical and mechanical properties. The microstructures of the nanocomposites showed individual particles of MgO uniformly distributed in the magnesium matrix. The thermomechanical analysis results revealed that a more thermally stable magnesium nanocomposite could be obtained with a threshold amount of MgO. The tensile properties results indicated that the yield strength peaks at 0.3 vol.% of reinforcement incorporated, with an improvement of approximately 17%. An attempt is made to correlate the volume fraction of the MgO with the resultant physical and mechanical properties of the magnesium nanocomposites.

1.
Luo
A.
,
1995
, “
Processing, Microstructure, and Mechanical Behaviour of Cast Magnesium Metal Matrix Composites
,”
Metallurgical and Materials Transactions
,
26A
, pp.
2445
2455
.
2.
Saravanan
R. A.
,
Surappa
M. K.
,
2000
, “
Fabrication and Characterization of Pure Magnesium-30 vol.% SiCp Particle Composite
,”
Materials Science and Engineering
,
A276
, pp.
108
116
.
3.
Hassan, S.F., Gupta, M., 2004, “Effect of Type of Primary Processing on the Microstructure, CTE and Mechanical Properties of Magnesium/Alumina Nanocomposites,” Composite Structures, In Press, Corrected Proof.
4.
Hassan
S. F.
,
Gupta
M.
,
2005
, “
Development of High Performance Magnesium Nano-Composites using Nano-Al2O3 as Reinforcement
,”
Materials Science and Engineering A
,
392
, pp.
163
168
.
5.
Goh, C.S., Gupta, M., Wei, J., Lee, L.C., Lim, K.W., 2004, “Characterization of Magnesium/ Carbon Nanotubes Composites Synthesized Using an Innovative Solidification Method,” Proceedings of ASME IMECE 2004.
6.
Lim
S. C. V.
,
Gupta
M.
,
2001
, “
Enhancing the Microstructural and Mechanical Response of a Mg/SiC Formulation by the Method of Reducing Extrusion Temperature
,”
Materials Research Bulletin
,
36
,
2627
2636
.
7.
Dai
L. H.
,
Ling
Z.
,
Bai
Y. L.
,
2001
, “
Size-Dependent Inelastic Behaviour of Particle-Reinforced Metal Matrix Composites
,”
Composites Science and Technology
,
61
, pp.
1057
1063
.
8.
Clyene, T.W., Withers, P.J., 1993, “An Introduction to Metal Matrix Composites” Cambridge University Press, Cambridge, UK.
9.
Gupta
M.
,
Lai
M. O.
,
Saravanaranganathan
,
2002
Synthesis, Microstructure and Properties Characterization of Disintegrated Melt Deposited Mg/SiC Composites
,”
Journal of Materials. Science
,
35
, pp.
2155
2165
.
10.
Vaidya
A. R.
,
Lewandowski
J. J.
,
1996
, “
Effects of SiCp Size and Volume Fraction on the High Cycle Fatigue Behaviour of AZ91D Magnesium Alloy Composites
,”
Materials Science and Engineering
,
A220
, pp.
85
92
.
11.
Seshan
S.
,
Jayamathy
M.
,
Kailas
S. V.
,
Srivatsan
T. S.
, “
The Tensile Behaviour of Two Magnesium Alloys Reinforced with Silicon Carbide Particulates
,”
Materials Science and Engineering
,
A363
, pp.
345
351
.
This content is only available via PDF.
You do not currently have access to this content.