Nanoindentation Characterization of FeCrAl C26M tubes
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
The present report summarizes the nanoindentation characterization of a FeCrAl alloy, C26M in both tube and bar form. Microstructural analysis on the tube using electron backscatter diffraction showed a textured system with the cross-section favoring orie ntations near the [110] and the tube surface near the [111]. The bar cross-section showed a texture with orientation favoring those near the [100]. A large amount of in-grain misorientation was observed in the tube specimen with very little in the bar, indicating cold-work from tube processing steps. Nanoindentation with a Berkovich tip measured a similar modulus for all specimens of ~220 GPa. The bar specimens had a hardness of ~3.9 GPa, significantly lower than the 4.8 GPa and 5.2 GPa for the tube cross-section and surface, respectively. Spherical nanoindentation was performed on all specimens and orientations. Indentation with a 100 μm tip resulted in a measured modulus value of ~220 GPa for all specimens, in agreement with the Berkovich indentation results. The nanoindentation yield strength for the bar was found to be ~0.8 - 0.9 GPa, nearly 0.5 GPa less than the C26M tube.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE Office of Nuclear Energy (NE)
- DOE Contract Number:
- AC52-06NA25396
- OSTI ID:
- 1477622
- Report Number(s):
- LA-UR-18-29656
- Country of Publication:
- United States
- Language:
- English
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