High-temperature nanoindentation was used to reveal nano-layer size effects on the hardness of two-dimensional metallic nanocomposites.We report the existence of a critical layer thickness at which strength achieves optimal thermal stability.Transmission electron microscopy and theoretical bicrystal calculations show that this optimum arises due to a Cartridge Sticks CHEWABLE GINGER 500MG transition from thermally activated glide within the layers to dislocation transmission across the layers.
We demonstrate experimentally that the atomic-scale properties of the interfaces profoundly affect this critical transition.The strong implications are that interfaces can be tuned to achieve an optimum in high temperature strength in layered nanocomposite structures.