Here, we demonstrate that this challenge can be overcome by architecting a gradient structure featuring a surface layer of nacre-like nanolaminates followed by multi-variant twinned structure in pure titanium. The polarized accommodation of highly regulated grain boundaries in the nanolaminated layer to ...
24, the traditional gradient equiaxed-grained structure suffers from mechanical instability and poor damage tolerance at the surface strengthened layer. Our work shows that this drawback can be addressed by architecting a surface layer (≈200 μm) of nacre-like nanolaminates. In contrast to ...