Abstract
Ti–6Al–4V alloys with a hierarchical 3D nanolayered structure, comprised of nanoscale (α+β) duplex phases, were successfully produced by a conventional dynamic thermal–mechanical phase transformation (DTMPT) process. The Ti–6Al–4V alloys with hierarchical 3D nanolayered structure exhibited simultaneously enhanced strength and ductility as compared to the coarse-lamellar material of the same chemistry. The strength and ductility enhancement may derived from high interface density and unique interface structure. A formation mechanism of hierarchical 3D nanolayered structure has also been proposed based on the nucleation and coarsening of α phase.
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