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Title: Effect of tube processing methods on the texture and grain boundary characteristics of 14YWT nanostructured ferritic alloys

Abstract

Texture and microstructure of tubes and plates fabricated from a nanostructured ferritic alloy (14YWT), produced either by spray forming followed by hydrostatic extrusion (Process I) or hot extrusion and cross-rolling a plate followed by hydrostatic tube extrusion (Process II) have been characterized in terms of their effects on texture and grain boundary character. Hydrostatic extrusion results in a combination of plane strain and shear deformations which generate low intensity α- and γ-fiber components of {001}<110> and {111}<110> together with a weak ζ-fiber component of {011}<211> and {011}<011>. In contrast, multi-step plane strain deformation by hot extrusion and cross-rolling of the plate leads to a strong texture component of {001}<110> together with a weaker {111}<112> component. Although the total strains are similar, shear dominated deformation leads to much lower texture indexes compared to plane strain deformations. In addition, the texture intensity decreases after hydrostatic extrusion of the alloy plate formed by plane strain deformation, due to a lower number of activated slip systems during shear dominated deformation. Notably, hot extruded and cross-rolled plate subjected to plane strain deformation to ~50% engineering strain creates only a modest population of low angle grain boundaries, compared to the much larger population observed following themore » combination of plane strain and shear deformation of ~44% engineering strain resulting from subsequent hydrostatic extrusion.« less

Authors:
 [1];  [2];  [3];  [3];  [3];  [2];  [4];  [5];  [6];  [6]
+ Show Author Affiliations
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Texas A & M Univ., College Station, TX (United States)
  2. Univ. of California, Santa Barbara, CA (United States)
  3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  4. Case Western Reserve Univ., Cleveland, OH (United States)
  5. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  6. Ames Lab., Ames, IA (United States)
Publication Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE Office of Nuclear Energy (NE); USDOE (originally DOE/LANL)
OSTI Identifier:
1261312
Alternate Identifier(s):
OSTI ID: 1304835; OSTI ID: 1359581
Report Number(s):
LA-UR-16-21610
Journal ID: ISSN 0921-5093; AF5810000; NEAF225
Grant/Contract Number:  
AC52-06NA25396
Resource Type:
Accepted Manuscript
Journal Name:
Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing
Additional Journal Information:
Journal Volume: 661; Journal ID: ISSN 0921-5093
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; texture; EBSD; neutron diffraction; nanostructured ferritic alloys

Citation Formats

Aydogan, E., Pal, S., Anderoglu, O., Maloy, S. A., Vogel, S. C., Odette, G. R., Lewandowski, J. J., Hoelzer, D. T., Anderson, I. E., and Rieken, J. R. Effect of tube processing methods on the texture and grain boundary characteristics of 14YWT nanostructured ferritic alloys. United States: N. p., 2016. Web. doi:10.1016/j.msea.2016.02.085.
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Aydogan, E., Pal, S., Anderoglu, O., Maloy, S. A., Vogel, S. C., Odette, G. R., Lewandowski, J. J., Hoelzer, D. T., Anderson, I. E., & Rieken, J. R. Effect of tube processing methods on the texture and grain boundary characteristics of 14YWT nanostructured ferritic alloys. United States. https://doi.org/10.1016/j.msea.2016.02.085
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Aydogan, E., Pal, S., Anderoglu, O., Maloy, S. A., Vogel, S. C., Odette, G. R., Lewandowski, J. J., Hoelzer, D. T., Anderson, I. E., and Rieken, J. R. Tue . "Effect of tube processing methods on the texture and grain boundary characteristics of 14YWT nanostructured ferritic alloys". United States. https://doi.org/10.1016/j.msea.2016.02.085. https://www.osti.gov/servlets/purl/1261312.
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@article{osti_1261312,
title = {Effect of tube processing methods on the texture and grain boundary characteristics of 14YWT nanostructured ferritic alloys},
author = {Aydogan, E. and Pal, S. and Anderoglu, O. and Maloy, S. A. and Vogel, S. C. and Odette, G. R. and Lewandowski, J. J. and Hoelzer, D. T. and Anderson, I. E. and Rieken, J. R.},
abstractNote = {Texture and microstructure of tubes and plates fabricated from a nanostructured ferritic alloy (14YWT), produced either by spray forming followed by hydrostatic extrusion (Process I) or hot extrusion and cross-rolling a plate followed by hydrostatic tube extrusion (Process II) have been characterized in terms of their effects on texture and grain boundary character. Hydrostatic extrusion results in a combination of plane strain and shear deformations which generate low intensity α- and γ-fiber components of {001}<110> and {111}<110> together with a weak ζ-fiber component of {011}<211> and {011}<011>. In contrast, multi-step plane strain deformation by hot extrusion and cross-rolling of the plate leads to a strong texture component of {001}<110> together with a weaker {111}<112> component. Although the total strains are similar, shear dominated deformation leads to much lower texture indexes compared to plane strain deformations. In addition, the texture intensity decreases after hydrostatic extrusion of the alloy plate formed by plane strain deformation, due to a lower number of activated slip systems during shear dominated deformation. Notably, hot extruded and cross-rolled plate subjected to plane strain deformation to ~50% engineering strain creates only a modest population of low angle grain boundaries, compared to the much larger population observed following the combination of plane strain and shear deformation of ~44% engineering strain resulting from subsequent hydrostatic extrusion.},
doi = {10.1016/j.msea.2016.02.085},
journal = {Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing},
number = ,
volume = 661,
place = {United States},
year = {Tue Mar 08 00:00:00 EST 2016},
month = {Tue Mar 08 00:00:00 EST 2016}
}
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https://doi.org/10.1016/j.msea.2016.02.085
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    Effect of High-Density Nanoparticles on Recrystallization and Texture Evolution in Ferritic Alloys
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