科研之友
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摘要
The present work was undertaken to highlight a novel magnesium matrix composite. Thermodynamics analysis by Miedema model predicts that Al-Ti intermetallics are the predominant equilibrium phases of Mg-Al-Ti system. An in situ titanium tri-aluminide (Al(3)Ti) particulate reinforced magnesium matrix composite has been fabricated successfully through reactive sintering of Mg-Al-Ti system. The composite is characterized by a relatively homogeneous distribution of Al(3)Ti particulates with a size range of 2-4 mu m and a good cohesion at the matrix/particulate interface. The hardness, compressive ultimate stress and wear resistance of the Al(3)Ti(P)/Mg composite are evidently increased, compared with pure magnesium and AZ31 magnesium alloy.
