Use of Liquid Metal Embrittlement (LME) for Controlled Fracture

Report No. ARL-TR-4976
Authors: James C. Hirvonen, Daniel J. Snoha, Jonathan S. Montgomery, Laszlo J. Kecskes, David M. Gray, and William S. de Rosset
Date/Pages: September 2009; 48 pages
Abstract: A concept is described for using liquid metal embrittlement (LME) to cause fracture of steel. Three different approaches are taken to break the metal, all based on putting the liquid metal (LM) into a surface notch (or groove) and applying stress. Some success was achieved in breaking the metal in quasi-static tests of flat samples. However, for dynamic tests of flat samples, as well as tests of a specific cylindrical configuration, brittle fracture was not achieved.
Distribution: Approved for public release
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Last Update / Reviewed: September 1, 2009