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Title: Nanoindentation Characterization of FeCrAl C26M tubes

Abstract

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.

Authors:
 [1];  [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE Office of Nuclear Energy (NE)
OSTI Identifier:
1477622
Report Number(s):
LA-UR-18-29656
DOE Contract Number:  
AC52-06NA25396
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English

Citation Formats

Gigax, Jonathan Gregory, and Li, Nan. Nanoindentation Characterization of FeCrAl C26M tubes. United States: N. p., 2018. Web. doi:10.2172/1477622.
Gigax, Jonathan Gregory, & Li, Nan. Nanoindentation Characterization of FeCrAl C26M tubes. United States. doi:10.2172/1477622.
Gigax, Jonathan Gregory, and Li, Nan. Thu . "Nanoindentation Characterization of FeCrAl C26M tubes". United States. doi:10.2172/1477622. https://www.osti.gov/servlets/purl/1477622.
@article{osti_1477622,
title = {Nanoindentation Characterization of FeCrAl C26M tubes},
author = {Gigax, Jonathan Gregory and Li, Nan},
abstractNote = {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.},
doi = {10.2172/1477622},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {10}
}

Technical Report:

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