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Title: Processability evaluation of a Mo-containing FeCrAl alloy for seamless thin-wall tube fabrication

Abstract

The processability of a Mo-containing FeCrAl alloy (Fe-13Cr-5.2Al-2Mo base, in wt%), developed for accident-tolerant nuclear fuel claddings, was evaluated through a stepwise rolling process at 400 °C under two different inter-pass annealing conditions (i.e., 650 °C for 1 h and at 870 °C for 30 min). The inter-pass annealing at 870 °C easily softened the FeCrAl alloy; however, it led to the formation of coarse grains of ~200 µm. On the other hand, the FeCrAl alloy maintained elongated, deformed grains with the inter-pass annealing at 650 °C, but the annealed samples showed relatively high deformation resistance and strong texture. Important aspects concerning the processability and microstructural control of FeCrAl alloys, such as deformation inhomogeneity, texture development, and grain coarsening, were discussed. Optimized processing conditions were recommended, based on the results, to achieve desirable microstructures with balanced processability and mechanical properties.

Authors:
 [1];  [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Nuclear Energy (NE)
OSTI Identifier:
1364301
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing
Additional Journal Information:
Journal Volume: 700; Journal Issue: C; Journal ID: ISSN 0921-5093
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Ferrous alloy; EBSD; Thermomechanical processing; Grain growth; Texture; Thin-wall tube

Citation Formats

Sun, Zhiqian, and Yamamoto, Yukinori. Processability evaluation of a Mo-containing FeCrAl alloy for seamless thin-wall tube fabrication. United States: N. p., 2017. Web. doi:10.1016/j.msea.2017.06.036.
Sun, Zhiqian, & Yamamoto, Yukinori. Processability evaluation of a Mo-containing FeCrAl alloy for seamless thin-wall tube fabrication. United States. doi:10.1016/j.msea.2017.06.036.
Sun, Zhiqian, and Yamamoto, Yukinori. Sat . "Processability evaluation of a Mo-containing FeCrAl alloy for seamless thin-wall tube fabrication". United States. doi:10.1016/j.msea.2017.06.036. https://www.osti.gov/servlets/purl/1364301.
@article{osti_1364301,
title = {Processability evaluation of a Mo-containing FeCrAl alloy for seamless thin-wall tube fabrication},
author = {Sun, Zhiqian and Yamamoto, Yukinori},
abstractNote = {The processability of a Mo-containing FeCrAl alloy (Fe-13Cr-5.2Al-2Mo base, in wt%), developed for accident-tolerant nuclear fuel claddings, was evaluated through a stepwise rolling process at 400 °C under two different inter-pass annealing conditions (i.e., 650 °C for 1 h and at 870 °C for 30 min). The inter-pass annealing at 870 °C easily softened the FeCrAl alloy; however, it led to the formation of coarse grains of ~200 µm. On the other hand, the FeCrAl alloy maintained elongated, deformed grains with the inter-pass annealing at 650 °C, but the annealed samples showed relatively high deformation resistance and strong texture. Important aspects concerning the processability and microstructural control of FeCrAl alloys, such as deformation inhomogeneity, texture development, and grain coarsening, were discussed. Optimized processing conditions were recommended, based on the results, to achieve desirable microstructures with balanced processability and mechanical properties.},
doi = {10.1016/j.msea.2017.06.036},
journal = {Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing},
number = C,
volume = 700,
place = {United States},
year = {Sat Jun 10 00:00:00 EDT 2017},
month = {Sat Jun 10 00:00:00 EDT 2017}
}

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Cited by: 3 works
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