Microstructural and Micromechanical Characterization of FeCrAl C26M tubes

Technical Report · Thu Sep 12 00:00:00 EDT 2019

DOI:https://doi.org/10.2172/1565812· OSTI ID:1565812

Gigax, Jonathan Gregory  ^[1]; Torrez, Avery Jude ^[1]; Li, Nan  ^[1]

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1. 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. The current heat, AC2-B, investigated by electron backscatter diffraction showed a textured system with the cross-section favoring orientations near the [110] and the tube surface near the [111], similar to previous heats of C26M. Nanoindentation with a Berkovich tip measured a similar moduli and hardness for all specimens of ~220 GPa and ~5 GPa, respectively. Spherical nanoindentation was performed on all specimens and orientations. Indentation with a 100 μm tip resulted in a measured moduli and yield strength values of ~215 GPa and ~1.5 GPa for all specimens, respectively, and in agreement with the Berkovich indentation results. Mesoscale tensile bars were laser cut out of a thin piece of AC2-B. Initial tensile testing showed that a minimum gauge thickness/width of 0.05 mm is required to approach more bulk-like conditions.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE Office of Nuclear Energy (NE)
• DOE Contract Number: 89233218CNA000001
• OSTI ID: 1565812
• Report Number(s): LA-UR-19-29173
• Country of Publication: United States
• Language: English