Nanoindentation Characterization of FeCrAl C26M Welds
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
The present report summarizes the initial mechanical characterization of a welded FeCrAl alloy, C26M, with comparison to two other welded specimens, C35M and C37M. The welded C26M showed a larger fusion and heat-affected zone than either the C35M or C37M welds. Nanoindentation hardness measurements using a Berkovich tip showed no major changes in the hardness and modulus between the fusion zone, heat-affected zone, and unaffected C26M tube. Nanoindentation strain-rate sensitivity tests were also performed and showed no changes between each of the regions in the C26M weld. Spherical nanoindentation tests were carried out to evaluate the nanoindentation modulus and nanoindentation yield strength in each of the regions of the C26M weld sample. No significant changes in strength from welding were observed with an average nanoindentation yield strength of ~1 GPa and nanoindentation modulus of ~220 GPa. Nanoindentation tests all show that the C26M does not change significantly after welding and that further characterization with some form of tensile loading is necessary to determine if any significant change has occurred.
- 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:
- 1473768
- Report Number(s):
- LA-UR-18-28942
- Country of Publication:
- United States
- Language:
- English
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