Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1501041 | Scripta Materialia | 2010 | 4 Pages |
Abstract
Strain-induced martensitic transformation of metastable austenite was investigated by nanoindentation of individual austenite grains in multi-phase steel. A cross-section prepared through one of these indented regions using focused ion beam milling was examined by transmission electron microscopy. The presence of martensite underneath the indent indicates that the pop-ins observed on the load–displacement curve during nanoindentation correspond to the onset of strain-induced martensitic transformation. The pop-ins can be understood as resulting from the selection of a favorable martensite variant during nanoindentation.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
T.-H. Ahn, C.-S. Oh, D.H. Kim, K.H. Oh, H. Bei, E.P. George, H.N. Han,