Metal Fracture (IMAGE) Texas A&M University Caption Advanced imaging provides clues to predicting fracture in metals. In this study, cracks in a nickel alloy embrittled by hydrogen were caught 'red handed' as they propagated along grain boundaries. Credit Texas A&M University Usage Restrictions None 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.