Microstructural control of FeCrAl alloys using Mo and Nb additions

Sun, Zhiqian; Bei, Hongbin; Yamamoto, Yukinori

doi:10.1016/j.matchar.2017.08.008

Title: Microstructural control of FeCrAl alloys using Mo and Nb additions

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Abstract

The effects of Mo and Nb additions on the microstructure and mechanical properties of two FeCrAl alloys were studied in this paper. Fine and uniform recrystallized grain structures (~ 20–30 μm) were achieved in both alloys through suitable annealing after warm-rolling. The formation of Fe₂Nb-type Laves phase precipitates in the Nb-containing FeCrAl alloy effectively stabilized the deformed and recrystallized microstructures. The Mo-containing FeCrAl alloy exhibited strong γ texture fiber after annealing at 650–900 °C, whereas the annealed Nb-containing FeCrAl alloy had much weaker texture. Finally, both strength and ductility decreased as the grain size increased in both alloys.

Authors:

^[1]; Bei, Hongbin ^[1];

^[1]

Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science and Technology Division

Publication Date:: Mon Aug 14 00:00:00 EDT 2017

Research Org.:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:: USDOE Office of Nuclear Energy (NE), Fuel Cycle Technologies (NE-5); USDOE Office of Nuclear Energy (NE)

OSTI Identifier:: 1376420

Alternate Identifier(s):: OSTI ID: 1495875

Grant/Contract Number:: AC05-00OR22725; AC0500OR22725

Resource Type:: Accepted Manuscript

Journal Name:: Materials Characterization

Additional Journal Information:: Journal Volume: 132; Journal ID: ISSN 1044-5803

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; FeCrAl alloys; Annealing; Electron backscattering diffraction (EBSD); Texture; Hall-Petch effect

Citation Formats


                    Sun, Zhiqian, Bei, Hongbin, and Yamamoto, Yukinori. Microstructural control of FeCrAl alloys using Mo and Nb additions.  United States: N. p., 2017. 
Web.  doi:10.1016/j.matchar.2017.08.008.

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                    Sun, Zhiqian, Bei, Hongbin, & Yamamoto, Yukinori. Microstructural control of FeCrAl alloys using Mo and Nb additions.  United States.  https://doi.org/10.1016/j.matchar.2017.08.008

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                    Sun, Zhiqian, Bei, Hongbin, and Yamamoto, Yukinori. Mon .  
"Microstructural control of FeCrAl alloys using Mo and Nb additions".  United States.  https://doi.org/10.1016/j.matchar.2017.08.008.  https://www.osti.gov/servlets/purl/1376420.

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@article{osti_1376420,

  title        = {Microstructural control of FeCrAl alloys using Mo and Nb additions},

  author       = {Sun, Zhiqian and Bei, Hongbin and Yamamoto, Yukinori},

  abstractNote = {The effects of Mo and Nb additions on the microstructure and mechanical properties of two FeCrAl alloys were studied in this paper. Fine and uniform recrystallized grain structures (~ 20–30 μm) were achieved in both alloys through suitable annealing after warm-rolling. The formation of Fe2Nb-type Laves phase precipitates in the Nb-containing FeCrAl alloy effectively stabilized the deformed and recrystallized microstructures. The Mo-containing FeCrAl alloy exhibited strong γ texture fiber after annealing at 650–900 °C, whereas the annealed Nb-containing FeCrAl alloy had much weaker texture. Finally, both strength and ductility decreased as the grain size increased in both alloys.},

  doi          = {10.1016/j.matchar.2017.08.008},

  journal      = {Materials Characterization},

  number       = ,

  volume       = 132,

  place        = {United States},

  year         = {Mon Aug 14 00:00:00 EDT 2017},

  month        = {Mon Aug 14 00:00:00 EDT 2017}

}

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