Abstract
In situ Nd 2O 3/Ti–6Si (wt.%) alloy composites were synthesized utilizing the reaction from Ti, Si, Nd and SiO 2 through homogeneously melting in a non-consumable vacuum arc melting furnace. The XRD results show that the composites clearly contain α-Ti, β-Ti, Ti 5Si 3 and the in situ synthesized Nd 2O 3 reinforcements. The continuous and quasi-continuous network-shape Ti 5Si 3 + Ti eutectic cells abundantly exist, and Nd 2O 3 grows from near-equiaxed shape to dendritic shape with increase of Nd content in the composites. From the investigations on compressive properties of composites, it is deduced that the significant improvement in modulus and strength can be attributed to the presence of abundant Nd 2O 3 in the composites.
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