HRTEM Study of Oxide Nanoparticles in 16Cr-4Al-2W-0.3Ti-0.3Y2O3 ODS Steel

Hsiung, L; Fluss, M; Wall, M; Kimura, A

doi:10.1557/PROC-1215-V02-04

HRTEM Study of Oxide Nanoparticles in 16Cr-4Al-2W-0.3Ti-0.3Y2O3 ODS Steel

Conference · Wed Nov 18 04:00:00 EST 2009

DOI:https://doi.org/10.1557/PROC-1215-V02-04· OSTI ID:971054

Hsiung, L; Fluss, M; Wall, M; Kimura, A

Crystal and interfacial structures of oxide nanoparticles in 16Cr-4Al-2W-0.3Ti-0.3Y{sub 2}O{sub 3} ODS ferritic steel have been examined using high-resolution transmission electron microscopy (HRTEM) techniques. Oxide nanoparticles with a complex-oxide core and an amorphous shell were frequently observed. The crystal structure of complex-oxide core is identified to be mainly monoclinic Y{sub 4}Al{sub 2}O{sub 9} (YAM) oxide compound. Orientation relationships between the oxide and matrix are found to be dependent on the particle size. Large particles (> 20 nm) tend to be incoherent and have a spherical shape, whereas small particles (< 10 nm) tend to be coherent or semi-coherent and have a faceted interface. The observations of partially amorphous nanoparticles lead us to propose three-stage mechanisms to rationalize the formation of oxide nanoparticles containing core/shell structures in as-fabricated ODS steels.

Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA

Sponsoring Organization:: USDOE

DOE Contract Number:: W-7405-ENG-48

OSTI ID:: 971054

Report Number(s):: LLNL-PROC-420389

Country of Publication:: United States

Language:: English

References (13)

Core/shell structures of oxygen-rich nanofeatures in oxide-dispersion strengthened Fe–Cr alloys Marquis, Emmanuelle A. Applied Physics Letters, Vol. 93, Issue 18, Article No. 181904 https://doi.org/10.1063/1.3000965	journal	November 2008
New insights into the structure of ODS particles in the ODS-Eurofer alloy Klimenkov, M.; Lindau, R.; Möslang, A. Journal of Nuclear Materials, Vol. 386-388 https://doi.org/10.1016/j.jnucmat.2008.12.174	journal	April 2009
Development of Oxide Dispersion Strengthened Ferritic Steels for FBR Core Application, (I): Improvement of Mechanical Properties by Recrystallization Processing Ukai, Shigeharu; Nishida, Toshio; Okada, Hirokazu Journal of Nuclear Science and Technology, Vol. 34, Issue 3 https://doi.org/10.1080/18811248.1997.9733658	journal	March 1997
Oxide dispersion-strengthened steels: A comparison of some commercial and experimental alloys Klueh, R. L.; Shingledecker, J. P.; Swindeman, R. W. Journal of Nuclear Materials, Vol. 341, Issue 2-3 https://doi.org/10.1016/j.jnucmat.2005.01.017	journal	May 2005
A Comparison of Three Sets of Diffraction Data for Al2Y4O9: X-Ray Synchrotron Powder Data, X-Ray Single Crystal Data from Ag Kalpha Radiation, and Neutron Single Crystal Data from 1.01 Å Neutrons. Christensen, A. Nørlund; Hazell, R. G.; Stålhandske, Claes Acta Chemica Scandinavica, Vol. 45 https://doi.org/10.3891/acta.chem.scand.45-0226	journal	January 1991
Evaluation of Helium effects on swelling behavior of oxide dispersion strengthened ferritic steels under ion irradiation Yutani, K.; Kishimoto, H.; Kasada, R. Journal of Nuclear Materials, Vol. 367-370 https://doi.org/10.1016/j.jnucmat.2007.03.016	journal	August 2007
The development of structural materials for fusion reactors Ehrlich, Karl Philosophical Transactions of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences, Vol. 357, Issue 1752 https://doi.org/10.1098/rsta.1999.0343	journal	March 1999
Precipitation behavior of oxide particles in mechanically alloyed powder of oxide-dispersion-strengthened steel Sakasegawa, Hideo; Tamura, Manabu; Ohtsuka, Satoshi Journal of Alloys and Compounds, Vol. 452, Issue 1 https://doi.org/10.1016/j.jallcom.2007.01.177	journal	March 2008
Nonscalability and nontransferability in the electronic properties of the Y-Al-O system Ching, W. Y.; Xu, Yong-Nian Physical Review B, Vol. 59, Issue 20 https://doi.org/10.1103/PhysRevB.59.12815	journal	May 1999
Mechanical dispersion of Y2O3 nanoparticles in steel EUROFER 97: process and optimisation de Castro, V.; Leguey, T.; Monge, M. A. Journal of Nuclear Materials, Vol. 322, Issue 2-3 https://doi.org/10.1016/S0022-3115(03)00330-1	journal	November 2003
Dispersion behaviour of oxide particles in mechanically alloyed ODS steel Okuda, T.; Fujiwara, M. Journal of Materials Science Letters, Vol. 14, Issue 22 https://doi.org/10.1007/BF00455428	journal	January 1995
Perspective of ODS alloys application in nuclear environments Ukai, Shigeharu; Fujiwara, Masayuki Journal of Nuclear Materials, Vol. 307-311, p. 749-757 https://doi.org/10.1016/S0022-3115(02)01043-7	journal	December 2002
Ultra Grain Refining and Decomposition of Oxide during Super-heavy Deformation in Oxide Dispersion Ferritic Stainless Steel Powder. Kimura, Yuuji; Takaki, Setsuo; Suejima, Shinichi ISIJ International, Vol. 39, Issue 2 https://doi.org/10.2355/isijinternational.39.176	journal	January 1999

Similar Records

HRTEM Study of Oxide Nanoparticles in K3-ODS Ferritic Steel Developed for Radiation Tolerance

Journal Article · Sun Nov 01 23:00:00 EST 2009 · Journal of Nuclear Materials · OSTI ID:1020326

Structure of Oxide Nanoparticles in Fe-16Cr MA/ODS Ferritic Steel

Journal Article · Tue Apr 06 00:00:00 EDT 2010 · Materials Letters · OSTI ID:1009225

HRTEM Study of the Role of Nanoparticles in ODS Ferritic Steel

Conference · Tue Aug 30 00:00:00 EDT 2011 · OSTI ID:1026918

Related Subjects

36 MATERIALS SCIENCE
CRYSTAL STRUCTURE
FERRITIC STEELS
ORIENTATION
OXIDES
PARTICLE SIZE
SHAPE
STEELS
TRANSMISSION ELECTRON MICROSCOPY

HRTEM Study of Oxide Nanoparticles in 16Cr-4Al-2W-0.3Ti-0.3Y2O3 ODS Steel

Citation Formats

References (13)

Similar Records

Related Subjects