Influence of particle dispersions on the high-temperature strength of ferritic alloys

D. T. Hoelzer; J. Bentley; M. A. Sokolov; M. K. Miller; G. R. Odette; M. J. Alinger

doi:10.1016/j.jnucmat.2007.03.151

Influence of particle dispersions on the high-temperature strength of ferritic alloys

D. T. Hoelzer, J. Bentley, M. A. Sokolov, M. K. Miller, G. R. Odette, M. J. Alinger

Research output: Contribution to journal › Article › peer-review

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Abstract

Four ferritic alloys based on the composition Fe-14Cr-3W-0.4Ti (nominal wt%) were developed with a predominant dispersion of either oxide particles or nano-size Y-, Ti-, O-rich clusters, or nanoclusters (NC). Tensile specimens machined from the alloys were tested at room temperature and at temperatures ranging from ∼360 °C to 800 °C in air using a strain rate of 10^-3 s^-1. The results showed that the high-temperature strength of the NC strengthened alloys was significantly better than that of the oxide strengthened alloys. The room temperature yield strengths of the two alloys containing the NC were 1469 MPa and 1261 MPa while the yield strengths of the two oxide dispersion alloys were 819 MPa (Y-Ti-oxides) and 583 MPa (Ti-oxides). However, the ductility of the oxide strengthened alloys was better than that of the NC strengthened alloys.

Original language	English
Pages (from-to)	166-172
Number of pages	7
Journal	Journal of Nuclear Materials
Volume	367-370 A
Issue number	SPEC. ISS.
DOIs	https://doi.org/10.1016/j.jnucmat.2007.03.151
State	Published - Aug 1 2007

Funding

Research at Oak Ridge National Laboratory (ORNL) and the University of California Santa Barbara (UCSB) was primarily sponsored by the US Department of Energy Office of Nuclear Energy, Science and Technology (I-NERI 2001-007-F), and the ORNL Laboratory Directed Research and Development Program. Research at the ORNL SHaRE Facility was supported in part by the Division of Scientific User Facilities, Office of Basic Energy Sciences, US Department of Energy. ORNL is managed by UT-Battelle, LLC for the US Department of Energy under Contract No. DE-AC05-00OR22725.

Funders	Funder number
ORNL Laboratory Research and Development Program
US Department of Energy Office of Nuclear Energy, Science and Technology
U.S. Department of Energy	DE-AC05-00OR22725
Basic Energy Sciences
Oak Ridge National Laboratory
University of California, Santa Barbara

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title = "Influence of particle dispersions on the high-temperature strength of ferritic alloys",

abstract = "Four ferritic alloys based on the composition Fe-14Cr-3W-0.4Ti (nominal wt%) were developed with a predominant dispersion of either oxide particles or nano-size Y-, Ti-, O-rich clusters, or nanoclusters (NC). Tensile specimens machined from the alloys were tested at room temperature and at temperatures ranging from ∼360 °C to 800 °C in air using a strain rate of 10-3 s-1. The results showed that the high-temperature strength of the NC strengthened alloys was significantly better than that of the oxide strengthened alloys. The room temperature yield strengths of the two alloys containing the NC were 1469 MPa and 1261 MPa while the yield strengths of the two oxide dispersion alloys were 819 MPa (Y-Ti-oxides) and 583 MPa (Ti-oxides). However, the ductility of the oxide strengthened alloys was better than that of the NC strengthened alloys.",

author = "Hoelzer, {D. T.} and J. Bentley and Sokolov, {M. A.} and Miller, {M. K.} and Odette, {G. R.} and Alinger, {M. J.}",

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T1 - Influence of particle dispersions on the high-temperature strength of ferritic alloys

AU - Hoelzer, D. T.

AU - Bentley, J.

AU - Sokolov, M. A.

AU - Miller, M. K.

AU - Odette, G. R.

AU - Alinger, M. J.

PY - 2007/8/1

Y1 - 2007/8/1

N2 - Four ferritic alloys based on the composition Fe-14Cr-3W-0.4Ti (nominal wt%) were developed with a predominant dispersion of either oxide particles or nano-size Y-, Ti-, O-rich clusters, or nanoclusters (NC). Tensile specimens machined from the alloys were tested at room temperature and at temperatures ranging from ∼360 °C to 800 °C in air using a strain rate of 10-3 s-1. The results showed that the high-temperature strength of the NC strengthened alloys was significantly better than that of the oxide strengthened alloys. The room temperature yield strengths of the two alloys containing the NC were 1469 MPa and 1261 MPa while the yield strengths of the two oxide dispersion alloys were 819 MPa (Y-Ti-oxides) and 583 MPa (Ti-oxides). However, the ductility of the oxide strengthened alloys was better than that of the NC strengthened alloys.

AB - Four ferritic alloys based on the composition Fe-14Cr-3W-0.4Ti (nominal wt%) were developed with a predominant dispersion of either oxide particles or nano-size Y-, Ti-, O-rich clusters, or nanoclusters (NC). Tensile specimens machined from the alloys were tested at room temperature and at temperatures ranging from ∼360 °C to 800 °C in air using a strain rate of 10-3 s-1. The results showed that the high-temperature strength of the NC strengthened alloys was significantly better than that of the oxide strengthened alloys. The room temperature yield strengths of the two alloys containing the NC were 1469 MPa and 1261 MPa while the yield strengths of the two oxide dispersion alloys were 819 MPa (Y-Ti-oxides) and 583 MPa (Ti-oxides). However, the ductility of the oxide strengthened alloys was better than that of the NC strengthened alloys.

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Influence of particle dispersions on the high-temperature strength of ferritic alloys

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