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Mechanical alloying (MA) of TiAl/TiAl–xNb–yAl–1Cr (x=4, 8 and 12, y=2.5, 4 and 6.5 in at.%) was carried out with optimized ball milling parameters. MA of prealloyed TiAl powder resulted nanocrystalline structure at early stages of MA and sustained up to 50h. TiAl–Nb–Al–Cr systems exhibited amorphous structure in lower Nb and Al content and formation of Nb 2 Al nanocrystalline compound with...
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