Abstract
NiAl–xTiC nanostructured composite powders [x = 0, 1, 3, 6 and 10 volume fraction per cent (vf%)] were produced by high energy ball milling of Ni, Al and nano-TiC powders. Sintering of prepared nanostructured NiAl powder using hot pressing resulted in an ultrafine grained NiAl intermetallic with a high relative density, while addition of TiC nanoparticles seriously inhibited grain growth and slightly decreased the relative density of nanostructured NiAl. It was found that the addition of nano-TiC reinforcement up to 10 vf% resulted in stabilisation of nanostructured NiAl in nanocomposite products.
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