Liquid Metal Embrittlement (IMAGE) Lehigh University Caption STEM HAADF micrographs show 2 layers of Bi absorbed along the general GBs of a Ni polycrystal quenched from 700°C. (C) Weakly bonded Bi atoms could cause the boundaries to easily fracture between layers and thus embrittle the material. Presumably, decohesion of this GB occurred during TEM specimen preparation. (D) A bilayer interfacial phase of similar character was observed in specimens quenched from 1100°C. Credit Martin Harmer, Lehigh 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.