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The effect of carbon addition on the microstructures and mechanical properties of TiAl intermetallic alloys has been characterized. It is shown that carbon is not only an efficient solid solution strengthener in TiAl, it is also an efficient precipitation strengthener by fine dispersion of carbide. Transmission electron microscope observations have revealed that fine needle-like precipitates, which...
The morphology of deformation-induced dislocations in polycrystalline Ni 3 (Al,Cr) containing M 23 C 6 precipitates has been investigated using transmission electron microscopy. Fine polyhedral precipitates of M 23 C 6 were formed in the Ni 3 (Al,Cr) matrix by aging at temperatures around 973 K after solution annealing at 1423 K. The aging...
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