Metallurgical and Materials Transactions A

, Volume 45, Issue 12, pp 5409–5418 | Cite as

An Assessment of Milling Time on the Structure and Properties of a Nanostructured Ferritic Alloy (NFA)

  • Richard DiDomizio
  • Shenyan Huang
  • Laura Dial
  • Jan Ilavsky
  • Mike Larsen
Article
First Online:

Abstract

The tensile properties of a 14 wt pct chromium nanostructured ferritic alloy (NFA) are assessed as a function of attrition time. Small angle X-ray scattering results show quantitatively that the number density of precipitated oxides increases as a function of milling time. This difference in oxide density alone is not enough to describe the tensile behavior of the NFA as a function of temperature. As a result, a previously proposed root mean square strengthening model is applied to the current study where direct dispersion strengthening, grain boundary strengthening, dislocation forest hardening, and matrix hardening are all considered. When an optimization routine is conducted, the fitting results suggest that the precipitated oxides are soft obstacles to dislocation motion.

Keywords

Milling Time Fast Fourier Transform Analysis Prior Particle Boundary Irradiation Damage Resistance Nanostructured Ferritic Alloy 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Notes

Acknowledgments

This material is based upon work supported by the Department of Energy under Award Number EE0003487. This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes and legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof. ChemMatCARS Sector 15 is principally supported by the National Science Foundation/Department of Energy under grant number NSF/CHE-0822838. Use of the Advanced Photon Source, an Office of Science User Facility operated for the U.S. Department of Energy (DoE) Office of Science by Argonne National Laboratory, was supported by the U.S. DoE under Contract No. DE-AC02-06CH11357. The authors greatly acknowledge Dr. Matthew Alinger, Dr. Ernie Hall, Dr. Yan Gao, Mr. Orrie Riccobono, Mr. Ian Spinelli, Mr. Tony Barbuto, Ms. Rebecca Casey, Mr. Mitchell Hammond, and Dr. Ning Zhou for their efforts and discussions.

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Copyright information

© The Minerals, Metals & Materials Society and ASM International 2014

Authors and Affiliations

  • Richard DiDomizio
    • 1
  • Shenyan Huang
    • 1
  • Laura Dial
    • 1
  • Jan Ilavsky
    • 2
  • Mike Larsen
    • 1
  1. 1.GE Global ResearchNiskayunaUSA
  2. 2.Argonne National LaboratoryArgonneUSA

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