Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7893674 | Corrosion Science | 2018 | 5 Pages |
Abstract
The microstructure evolution of a FeNiCr alloy oxidized at 600â¯Â°C by simultaneously applying stress via high temperature nanoindentation is reported. Analysis using transmission electron microscopy shows that a sharp crack was induced beneath the indentation area under the stress-oxidation coupling condition. Nanotwins beneath the indentation area were also observed, which acted as a barrier that ceased the crack propagation beneath the indenter by altering the path of the crack. Results reveal a transformation from inter-granular crack propagation along the oxide grain boundaries to intra-granular crack propagation through the nanotwin structure with a zig-zag pattern.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Yan Li, Xufei Fang, Siyuan Zhang, Xue Feng,