Metallic Glass Cylinder (IMAGE) North Carolina State University Caption The cylinder shown here is an amorphous iron alloy, or metallic glass, made using an additive manufacturing technique. Credit Zaynab Mahbooba Usage Restrictions Credit must be given. 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.