In-situ measurements of surface tension-driven shape recovery in a metallic glass

• Main Authors: Packard, Corinne E. (Contributor), Schroers, Jan (Author), Schuh, Christopher A. (Contributor)
• Other Authors: Massachusetts Institute of Technology. Department of Materials Science and Engineering (Contributor)
• Format: Article
• Language: English
• Published: Elsevier, 2012-04-04T13:53:34Z.
• Subjects: Article
• Online Access: Get fulltext

A new technique, involving nanoindentation and in situ scanning probe microscopy at high temperature under an inert atmosphere, is used to study deformation of a Pt-based metallic glass. As temperature is increased into the supercooled liquid regime, impressions made by nanoindentation flatten due to surface tension-driven viscous flow. In situ measurements of shape recovery at various temperatures and times permit an estimation of the apparent activation energy for Newtonian-viscous flow.
United States. Office of Naval Research (grant N00014-08-1-0312)
National Science Foundation (U.S.) (grant 0826445)