Stability of ferritic MA/ODS alloys at high temperatures

M. K. Miller; D. T. Hoelzer; E. A. Kenik; K. F. Russell

doi:10.1016/j.intermet.2004.07.036

Stability of ferritic MA/ODS alloys at high temperatures

M. K. Miller, D. T. Hoelzer, E. A. Kenik, K. F. Russell

Research output: Contribution to journal › Conference article › peer-review

268 Scopus citations

Abstract

The ultrafine scale microstructure of three MA/ODS ferritic alloys (12YWT, 14YWT and MA957) have been characterized by atom probe tomography in the as-received condition and after isothermal heat treatments at temperatures of up to 24 h at 1300 °C (∼85% T_m). Atom probe tomography revealed the presence of a high number density of 2-4 nm diameter titanium-, yttrium- and oxygen-enriched particles. These ultrafine particles were found to be extremely resistant to coarsening during isothermal aging at 1300 °C. Solute segregation of the alloying elements to dislocations and grain boundaries was also observed.

Original language	English
Pages (from-to)	387-392
Number of pages	6
Journal	Intermetallics
Volume	13
Issue number	3-4
DOIs	https://doi.org/10.1016/j.intermet.2004.07.036
State	Published - Mar 2005
Externally published	Yes

Funding

Research at the Oak Ridge National Laboratory SHaRE Collaborative Research Center was sponsored by the Division of Materials Sciences and Engineering and the Office of Nuclear Energy, Science and Technology (I-NERI 2001-007-F), US Department of Energy, under contract DE-AC05-00OR22725 with UT-Battelle, LLC.

Funders	Funder number
Office of Nuclear Energy, Science and Technology
U.S. Department of Energy	DE-AC05-00OR22725
Division of Materials Sciences and Engineering

Keywords

B. Precipitates
C. Mechanical alloying and milling
D. Microstructure

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10.1016/j.intermet.2004.07.036

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title = "Stability of ferritic MA/ODS alloys at high temperatures",

abstract = "The ultrafine scale microstructure of three MA/ODS ferritic alloys (12YWT, 14YWT and MA957) have been characterized by atom probe tomography in the as-received condition and after isothermal heat treatments at temperatures of up to 24 h at 1300 °C (∼85% Tm). Atom probe tomography revealed the presence of a high number density of 2-4 nm diameter titanium-, yttrium- and oxygen-enriched particles. These ultrafine particles were found to be extremely resistant to coarsening during isothermal aging at 1300 °C. Solute segregation of the alloying elements to dislocations and grain boundaries was also observed.",

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author = "Miller, {M. K.} and Hoelzer, {D. T.} and Kenik, {E. A.} and Russell, {K. F.}",

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language = "English",

volume = "13",

pages = "387--392",

journal = "Intermetallics",

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TY - JOUR

T1 - Stability of ferritic MA/ODS alloys at high temperatures

AU - Miller, M. K.

AU - Hoelzer, D. T.

AU - Kenik, E. A.

AU - Russell, K. F.

PY - 2005/3

Y1 - 2005/3

N2 - The ultrafine scale microstructure of three MA/ODS ferritic alloys (12YWT, 14YWT and MA957) have been characterized by atom probe tomography in the as-received condition and after isothermal heat treatments at temperatures of up to 24 h at 1300 °C (∼85% Tm). Atom probe tomography revealed the presence of a high number density of 2-4 nm diameter titanium-, yttrium- and oxygen-enriched particles. These ultrafine particles were found to be extremely resistant to coarsening during isothermal aging at 1300 °C. Solute segregation of the alloying elements to dislocations and grain boundaries was also observed.

AB - The ultrafine scale microstructure of three MA/ODS ferritic alloys (12YWT, 14YWT and MA957) have been characterized by atom probe tomography in the as-received condition and after isothermal heat treatments at temperatures of up to 24 h at 1300 °C (∼85% Tm). Atom probe tomography revealed the presence of a high number density of 2-4 nm diameter titanium-, yttrium- and oxygen-enriched particles. These ultrafine particles were found to be extremely resistant to coarsening during isothermal aging at 1300 °C. Solute segregation of the alloying elements to dislocations and grain boundaries was also observed.

KW - B. Precipitates

KW - C. Mechanical alloying and milling

KW - D. Microstructure

UR - http://www.scopus.com/inward/record.url?scp=13844254943&partnerID=8YFLogxK

U2 - 10.1016/j.intermet.2004.07.036

DO - 10.1016/j.intermet.2004.07.036

M3 - Conference article

AN - SCOPUS:13844254943

SN - 0966-9795

VL - 13

SP - 387

EP - 392

JO - Intermetallics

JF - Intermetallics

IS - 3-4

ER -

Stability of ferritic MA/ODS alloys at high temperatures

Abstract

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Keywords

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