scholarly journals Ultrafine-grained oxide-dispersion-strengthened 9Cr steel with exceptional strength and thermal stability

2022 ◽  
pp. 101112
Author(s):  
B.R. Sun ◽  
A.D. Zhou ◽  
Y.L. Li ◽  
Z.L. Zhang ◽  
C.C. Du ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Oxide Dispersion Strengthened ◽  
Oxide Dispersion ◽  
9Cr Steel ◽  
Ultrafine Grained

Study of the thermal stability of nanoparticle distributions in an oxide dispersion strengthened (ODS) ferritic alloys

2012 ◽  
Vol 428 (1-3) ◽  
pp. 154-159 ◽  
Author(s):  
S.Y. Zhong ◽  
J. Ribis ◽  
V. Klosek ◽  
Y. de Carlan ◽  
N. Lochet ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Oxide Dispersion Strengthened ◽  
Oxide Dispersion ◽  
Ferritic Alloys ◽  
Thermal Stability Of

Thermal stability of dispersoids in ferritic oxide-dispersion-strengthened alloys

1994 ◽  
Vol 177 (1-2) ◽  
pp. 199-208 ◽  
Author(s):  
P. Krautwasser ◽  
A. Czyrska-Filemonowicz ◽  
M. Widera ◽  
F. Carsughi
Keyword(s):  
Thermal Stability ◽  
Oxide Dispersion Strengthened ◽  
Oxide Dispersion ◽  
Thermal Stability Of

Preparation and Thermal Stability of a Mechanically Alloyed Oxide Dispersion Strengthened Ferritic Steels

2012 ◽  
Vol 715-716 ◽  
pp. 605-610
Author(s):  
Yu Ren Wen ◽  
Yong Liu ◽  
Dong Hua Liu ◽  
Bei Tang
Keyword(s):  
Thermal Stability ◽  
Nuclear Power ◽  
Oxygen Carrier ◽  
Milled Powder ◽  
Oxide Dispersion Strengthened ◽  
Average Diameter ◽  
Ferritic Steels ◽  
Oxide Dispersion ◽  
Mechanically Alloyed ◽  
The Matrix

Oxide dispersion strengthened ferritic steels (so-called nanostructured ferritic alloys, NFAs), which are candidate structural materials in next generation nuclear power plant, have attracted much attention during recent years. In this work, iron oxide as oxygen carrier and titanium, yttrium hydrides were together mechanically milled with Fe-14Cr-3W gas-atomized powder. The thermal stability and recrystallization behaviour of the as-milled ferritic powder were studied by means of metallography, SEM, TEM and microhardness test. After ball milling for 48h, complete solid solution of bcc-Fe was formed in the as-milled powder. The thermal analysis results show that dispersed oxides with an average diameter of 5nm precipitate from the supersaturated matrix at about 850 °C. During annealing at temperatures from 800 to 1000 °C, a large number of equiaxed grains as fine as few hundreds of microns were found embedding in the matrix; the recrystallized grains stay quite stable and show minor dependence on annealing temperature and time. After being heated to 1200 °C for extended time, abnormal grain growth took place and resulted in bimodal grained structure. The effect of secondary particles on the thermal stability and recrystallization behavior of the ferritic steel was also discussed.

Creep behaviour of ultrafine-grained oxide dispersion strengthened copper prepared by cryomilling

2004 ◽  
Vol 387-389 ◽  
pp. 639-642 ◽  
Author(s):  
D.V. Kudashov ◽  
U. Martin ◽  
M. Heilmaier ◽  
H. Oettel
Keyword(s):  
Creep Behaviour ◽  
Oxide Dispersion Strengthened ◽  
Oxide Dispersion ◽  
Ultrafine Grained

scholarly journals Oxidation/Corrosion Behaviour of ODS Ferritic/Martensitic Steels in Pb Melt at Elevated Temperature

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
O. I. Yaskiv ◽  
V. M. Fedirko
Keyword(s):  
Fusion Reactor ◽  
Corrosion Behaviour ◽  
Oxide Dispersion Strengthened ◽  
Oxide Dispersion ◽  
Martensitic Steels ◽  
Good Adhesion ◽  
High Temperature Application ◽  
9Cr Steel ◽  
Corrosion Kinetics ◽  
Temperature Application

Lead-based melts (Pb, Pb-Bi) are considered as candidate coolants and spallation neutron targets due to their excellent thermophysical and nuclear properties. However, the corrosion of structural materials remains a major issue. Oxide dispersion strengthened (ODS) ferritic/martensitic steels are considered for high temperature application for both fission and fusion reactor concepts. The oxidation/corrosion kinetics in a static oxygen-saturated Pb melt at temperature of 550°C as well as the morphology and composition of scales formed on ferritic/martensitic Fe-9Cr-1.5W and ferritic Fe-14Cr-1.5W ODS steels have been investigated. Both materials showed homogeneous multiple, dense scales that consisted of typical combination of Fe3O4 as outer sublayer and (Fe,Cr)3O4 as inner sublayer. A nonuniform growth of inner oxide sublayers into the metal matrix as well as a good adhesion to the metal substrate is observed. With the prolongation of exposure from 240 to 1000 h, observed scales grow from 35 µm to 45 µm for ODS Fe-9Cr steel and from 40 µm to 60 µm for ODS Fe-14Cr steel with the thinning rates of 0,22 and 0,31 mm/year correspondingly. The mechanism of scales formation is discussed.

Sign in / Sign up

Export Citation Format

Share Document