skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Development of new generation reduced activation ferritic-martenstic steels for advanced fusion reactors

Abstract

International development of reduced activation ferritic-martensitic (RAFM) steels has focused on 9 wt percentage Cr, which primarily contain M23C6 (M = Cr-rich) and small amounts of MX (M = Ta/V, X = C/N) precipitates, not adequate to maintain strength and creep resistance above ~500 °C. To enable applications at higher temperatures for better thermal efficiency of fusion reactors, computational alloy thermodynamics coupled with strength modeling have been employed to explore a new generation RAFM steels. The new alloys are designed to significantly increase the amount of MX nanoprecipitates, which are manufacturable through standard and scalable industrial steelmaking methods. Preliminary experimental results of the developed new alloys demonstrated noticeably increased amount of MX, favoring significantly improved strength, creep resistance, and Charpy impact toughness as compared to current RAFM steels. Furthermore, the strength and creep resistance were comparable or approaching to the lower bound of, but impact toughness was noticeably superior to 9–20Cr oxide dispersion-strengthened ferritic alloys.

Authors:
 [1];  [2];  [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Nuclear Energy (NE); USDOE Office of Science (SC), Fusion Energy Sciences (FES)
OSTI Identifier:
1255666
Alternate Identifier(s):
OSTI ID: 1325370
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Nuclear Materials
Additional Journal Information:
Journal Volume: 478; Journal ID: ISSN 0022-3115
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; precipitates; strengthening; toughness; ODS ferritic steel; reduced activation ferritic-martensitic steels

Citation Formats

Tan, Lizhen, Snead, Lance Lewis, and Katoh, Yutai. Development of new generation reduced activation ferritic-martenstic steels for advanced fusion reactors. United States: N. p., 2016. Web. https://doi.org/10.1016/j.jnucmat.2016.05.037.
Tan, Lizhen, Snead, Lance Lewis, & Katoh, Yutai. Development of new generation reduced activation ferritic-martenstic steels for advanced fusion reactors. United States. https://doi.org/10.1016/j.jnucmat.2016.05.037
Tan, Lizhen, Snead, Lance Lewis, and Katoh, Yutai. Thu . "Development of new generation reduced activation ferritic-martenstic steels for advanced fusion reactors". United States. https://doi.org/10.1016/j.jnucmat.2016.05.037. https://www.osti.gov/servlets/purl/1255666.
@article{osti_1255666,
title = {Development of new generation reduced activation ferritic-martenstic steels for advanced fusion reactors},
author = {Tan, Lizhen and Snead, Lance Lewis and Katoh, Yutai},
abstractNote = {International development of reduced activation ferritic-martensitic (RAFM) steels has focused on 9 wt percentage Cr, which primarily contain M23C6 (M = Cr-rich) and small amounts of MX (M = Ta/V, X = C/N) precipitates, not adequate to maintain strength and creep resistance above ~500 °C. To enable applications at higher temperatures for better thermal efficiency of fusion reactors, computational alloy thermodynamics coupled with strength modeling have been employed to explore a new generation RAFM steels. The new alloys are designed to significantly increase the amount of MX nanoprecipitates, which are manufacturable through standard and scalable industrial steelmaking methods. Preliminary experimental results of the developed new alloys demonstrated noticeably increased amount of MX, favoring significantly improved strength, creep resistance, and Charpy impact toughness as compared to current RAFM steels. Furthermore, the strength and creep resistance were comparable or approaching to the lower bound of, but impact toughness was noticeably superior to 9–20Cr oxide dispersion-strengthened ferritic alloys.},
doi = {10.1016/j.jnucmat.2016.05.037},
journal = {Journal of Nuclear Materials},
number = ,
volume = 478,
place = {United States},
year = {2016},
month = {5}
}

Journal Article:

Citation Metrics:
Cited by: 8 works
Citation information provided by
Web of Science

Save / Share:

Works referenced in this record:

Low-activation ferritic and martensitic steels for fusion application
journal, October 1996


Impurity effects on reduced-activation ferritic steels developed for fusion applications
journal, August 2000


Coarsening of precipitates in an advanced creep resistant 9% chromium steel—quantitative microscopy and simulations
journal, August 2002


Recent Developments in Irradiation-Resistant Steels
journal, August 2008


Creep mechanisms of ferritic oxide dispersion strengthened alloys
journal, February 2003

  • Wasilkowska, A.; Bartsch, M.; Messerschmidt, U.
  • Journal of Materials Processing Technology, Vol. 133, Issue 1-2
  • DOI: 10.1016/S0924-0136(02)00237-6

Characterization of oxide nanoprecipitates in an oxide dispersion strengthened 14YWT steel using aberration-corrected STEM
journal, September 2012


Designing Radiation Resistance in Materials for Fusion Energy
journal, July 2014


Effect of thermomechanical treatment on 9Cr ferritic–martensitic steels
journal, October 2013


Creep-strengthening of steel at high temperatures using nano-sized carbonitride dispersions
journal, July 2003

  • Taneike, Masaki; Abe, Fujio; Sawada, Kota
  • Nature, Vol. 424, Issue 6946
  • DOI: 10.1038/nature01740

Effect of tungsten and tantalum on the low cycle fatigue behavior of reduced activation ferritic/martensitic steels
journal, May 2012


The effect of tungsten on dislocation recovery and precipitation behavior of low-activation martensitic 9Cr steels
journal, October 1991

  • Abe, F.; Araki, H.; Noda, T.
  • Metallurgical Transactions A, Vol. 22, Issue 10
  • DOI: 10.1007/BF02664988

Effect of tungsten on tensile properties and flow behaviour of RAFM steel
journal, February 2013


Effect of thermal aging on the microstructure and mechanical properties of 7–11 CrW steels
journal, December 2000


Effects of alloying elements and thermomechanical treatment on 9Cr Reduced Activation Ferritic–Martensitic (RAFM) steels
journal, November 2013


Effect of W and Ta on creep–fatigue interaction behavior of reduced activation ferritic–martensitic (RAFM) steels
journal, November 2015


Effect of silicon on the microstructure and mechanical properties of reduced activation ferritic/martensitic steel
journal, April 2015


Precipitation behavior of laves phase and its effect on toughness of 9Cr-2Mo Ferritic-martensitic steel
journal, November 1986


Thermodynamic modeling and kinetics simulation of precipitate phases in AISI 316 stainless steels
journal, May 2014


Reduced-activation steels: Future development for improved creep strength
journal, August 2008


Microstructure control for high strength 9Cr ferritic–martensitic steels
journal, March 2012


Conversion of MX nitrides to Z-phase in a martensitic 12% Cr steel
journal, January 2010


Effect of creep deformation on Z phase formation in Gr.91 steel
journal, December 2013


High-temperature mechanical properties and microstructure of 9Cr oxide dispersion strengthened steel compared with RAFMs
journal, October 2011


Advances in Physical Metallurgy and Processing of Steels. Strengthening Mechanisms of Creep Resistant Tempered Martensitic Steel.
journal, January 2001


The relation between polycrystal deformation and single-crystal deformation
journal, May 1970

  • Kocks, U. F.
  • Metallurgical and Materials Transactions B, Vol. 1, Issue 5
  • DOI: 10.1007/BF02900224

Formulating the strength factor α for improved predictability of radiation hardening
journal, October 2015


TEM characterization of precipitates in EUROFER 97
journal, May 2012


Quantitative TEM analysis of precipitation and grain boundary segregation in neutron irradiated EUROFER 97
journal, November 2014


Materials design data for reduced activation martensitic steel type F82H
journal, November 2002


Oxide dispersion-strengthened steels: A comparison of some commercial and experimental alloys
journal, May 2005


Present development status of EUROFER and ODS-EUROFER for application in blanket concepts
journal, November 2005


Thermal creep behaviour of the EUROFER 97 RAFM steel and two European ODS EUROFER 97 steels
journal, November 2005


Effects of carbide precipitation on the strength and Charpy impact properties of low carbon Mn–Ni–Mo bainitic steels
journal, August 2001


Notch Impact Behavior of Oxide-Dispersion-Strengthened (ODS) Fe20Cr5Al Alloy
journal, June 2013

  • Chao, J.; Capdevila, C.; Serrano, M.
  • Metallurgical and Materials Transactions A, Vol. 44, Issue 10
  • DOI: 10.1007/s11661-013-1815-7

    Works referencing / citing this record:

    A Novel Low-Activation VCrFeTaxWx (x = 0.1, 0.2, 0.3, 0.4, and 1) High-Entropy Alloys with Excellent Heat-Softening Resistance
    journal, December 2018

    • Zhang, Weiran; Liaw, Peter; Zhang, Yong
    • Entropy, Vol. 20, Issue 12
    • DOI: 10.3390/e20120951

    Evaluation of Hot Deformation and Dynamic Recrystallization Behaviors of Advanced Reduced-Activated Alloy (ARAA)
    journal, January 2019

    • Kim, Sang-Wook; Son, Hyeon-Woo; Jung, Taek-Kyun
    • Metals and Materials International, Vol. 25, Issue 4
    • DOI: 10.1007/s12540-019-00242-1