Abstract
The deformation behaviour of Nb 3Al compressed at above 1300 K was studied using off-stoichiometric, single-phase Nb 3Al produced by consolidation of prealloyed and ball-milled powders. It was found that Nb 3Al was able to be deformed plastically above 1400 K and the stress-strain curves showed deformation softening after a peak stress. Transmission electron microscopic observations revealed that this deformation softening was caused by dynamic recrystallization. The amount of deformation softening decreases and steady state deformation occurs at an early stage of compression, as the compression temperature increases.
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