Sodium compatibility of ODS steel at elevated temperature

2004 ◽  
Vol 329-333 ◽  
pp. 1393-1397 ◽  
Author(s):  
Eiichi Yoshida ◽  
Shoichi Kato
Keyword(s):  
Elevated Temperature ◽  
Ods Steel

Hardening behavior and deformation microstructure beneath indentation in heavy ion irradiated 12Cr-ODS steel at elevated temperature

2021 ◽  
Vol 543 ◽  
pp. 152606
Author(s):  
H.L. Yang ◽  
S. Kano ◽  
J. McGrady ◽  
J.J. Shen ◽  
Y.F. Li ◽  
...  
Keyword(s):  
Elevated Temperature ◽  
Heavy Ion ◽  
Deformation Microstructure ◽  
Hardening Behavior ◽  
Ods Steel

Microstructural stability of an as-fabricated 12Cr-ODS steel under elevated-temperature annealing

2017 ◽  
Vol 695 ◽  
pp. 1946-1955 ◽  
Author(s):  
Jingjie Shen ◽  
Huilong Yang ◽  
Yanfen Li ◽  
Sho Kano ◽  
Yoshitaka Matsukawa ◽  
...  
Keyword(s):  
Elevated Temperature ◽  
Microstructural Stability ◽  
Ods Steel

Radiation-induced nanoparticle growth in 12Cr-ODS steel at elevated temperature

2020 ◽  
Vol 538 ◽  
pp. 152192 ◽  
Author(s):  
Sun-Ryung Oh ◽  
Sho Kano ◽  
Huilong Yang ◽  
John McGrady ◽  
Hiroaki Abe
Keyword(s):  
Elevated Temperature ◽  
Nanoparticle Growth ◽  
Ods Steel ◽  
Radiation Induced

Formation of nano-size oxide particles and δ-ferrite at elevated temperature in 9Cr-ODS steel

2011 ◽  
Vol 417 (1-3) ◽  
pp. 209-212 ◽  
Author(s):  
Sawoong Kim ◽  
Satoshi Ohtsuka ◽  
Takeji Kaito ◽  
Shinichiro Yamashita ◽  
Masaki Inoue ◽  
...  
Keyword(s):  
Elevated Temperature ◽  
Ods Steel ◽  
Δ Ferrite ◽  
Oxide Particles ◽  
Nano Size

Evidence for a shear mechanism for the precipitation of γ-zirconium hydride in zirconium

1978 ◽  
Vol 36 (1) ◽  
pp. 658-659
Author(s):  
G.J.C. Carpenter
Keyword(s):  
Elevated Temperature ◽  
Strain Field ◽  
Zirconium Hydride ◽  
Zirconium Atom ◽  
Atom Diffusion ◽  
Solvus Temperature ◽  
Hexagonal Close Packed ◽  
Partial Dislocations ◽  
The Face

In zirconium-hydrogen alloys, rapid cooling from an elevated temperature causes precipitation of the face-centred tetragonal (fct) phase, γZrH, in the form of needles, parallel to the close-packed <1120>zr directions (1). With low hydrogen concentrations, the hydride solvus is sufficiently low that zirconium atom diffusion cannot occur. For example, with 6 μg/g hydrogen, the solvus temperature is approximately 370 K (2), at which only the hydrogen diffuses readily. Shears are therefore necessary to produce the crystallographic transformation from hexagonal close-packed (hep) zirconium to fct hydride.The simplest mechanism for the transformation is the passage of Shockley partial dislocations having Burgers vectors (b) of the type 1/3<0110> on every second (0001)Zr plane. If the partial dislocations are in the form of loops with the same b, the crosssection of a hydride precipitate will be as shown in fig.1. A consequence of this type of transformation is that a cumulative shear, S, is produced that leads to a strain field in the surrounding zirconium matrix, as illustrated in fig.2a.

Microstructural characterization of a rapidly solidified Al-Fe-V-Si alloy for elevated temperature applications

1988 ◽  
Vol 46 ◽  
pp. 550-551
Author(s):  
R. E. Franck ◽  
J. A. Hawk ◽  
G. J. Shiflet
Keyword(s):  
High Temperature ◽  
Elevated Temperature ◽  
Grain Growth ◽  
Volume Fraction ◽  
Microstructural Characterization ◽  
Second Phase ◽  
Microstructural Stability ◽  
Elevated Temperature Strength ◽  
Temperature Applications

Rapid solidification processing (RSP) is one method of producing high strength aluminum alloys for elevated temperature applications. Allied-Signal, Inc. has produced an Al-12.4 Fe-1.2 V-2.3 Si (composition in wt pct) alloy which possesses good microstructural stability up to 425°C. This alloy contains a high volume fraction (37 v/o) of fine nearly spherical, α-Al12(Fe, V)3Si dispersoids. The improved elevated temperature strength and stability of this alloy is due to the slower dispersoid coarsening rate of the silicide particles. Additionally, the high v/o of second phase particles should inhibit recrystallization and grain growth, and thus reduce any loss in strength due to long term, high temperature annealing.The focus of this research is to investigate microstructural changes induced by long term, high temperature static annealing heat-treatments. Annealing treatments for up to 1000 hours were carried out on this alloy at 500°C, 550°C and 600°C. Particle coarsening and/or recrystallization and grain growth would be accelerated in these temperature regimes.

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