From "Smaller is Stronger" to "Size‐Independent Strength Plateau": Towards Measuring the Ideal Strength of Iron. (17th April 2015) - Han, Wei‐Zhong
Abstract The trend from "smaller is stronger" to "size‐independent strength plateau" is observed in the compression of spherical iron nanoparticles. When the diameter of iron nanospheres is less than a critical value, the maximum contact pressure saturates at 10.7 GPa, corresponding to a local shear stress of ≈9.4 GPa, which is comparable to the theoretical shear strength of iron.