Date of download: 12/17/2017 Copyright © ASME. All rights reserved. From: Strengthening Behavior and Tension–Compression Strength–Asymmetry in Nanocrystalline Metal–Ceramic Composites J. Eng. Mater. Technol. 2012;134(4):041003-041003-8. doi:10.1115/1.4006678 Figure Legend: Stress–strain curves for deformation of nanocrystalline (a) Al, (b) Al/Si composite (volume fraction ∼ 56% Si), and (c) Si with a grain size of 6 nm for conditions of loading in tension (black curve) and compression (red curve). See online article for color figure.