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Updated: Sep 23, 2025

Determining the Mechanical Strength of Ultra-Fine-Grained Metals
Published on: November 22, 2021
Response to Comment on "Cryoforged nanotwinned titanium with ultrahigh strength and ductility"
Shiteng Zhao1,2,3, Ruopeng Zhang1,2, Qin Yu4
1Department of Materials Science and Engineering, University of California, Berkeley, CA 94720, USA.
Abstract:
We address the three main points of Guo et al. They claim that we should have used the engineering stress versus engineering strain curves to infer the mechanical properties of our nanotwinned titanium, question our sample design on the basis of a finite-element analysis, and doubt the immobility of some preexisting grain/twin boundaries in our electron backscatter diffraction micrographs. We find their analysis to be groundless and to contain many inconsistencies.
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