Structural Metallic-Glass Composites (IMAGE) California Institute of Technology Caption Samples of the new titanium-based metallic-glass composites showing their toughness and ductility. Credit PNAS/Douglas Hofmann, Caltech Usage Restrictions With credit as written License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.