Orientation dependence of yield strength in a new single crystal-like FeCrAl oxide dispersion strengthened alloy

2021 ◽  
Vol 176 ◽  
pp. 111043
Author(s):  
S.M.S. Aghamiri ◽  
T. Sugawara ◽  
S. Ukai ◽  
N. Oono ◽  
K. Sakamoto ◽  
...  
Keyword(s):  
Yield Strength ◽  
Single Crystal ◽  
Oxide Dispersion Strengthened ◽  
Orientation Dependence ◽  
Oxide Dispersion ◽  
Oxide Dispersion Strengthened Alloy

scholarly journals ODS EUROFER Steel Strengthened by Y-(Ce, Hf, La, Sc, and Zr) Complex Oxides

Metals ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 1148 ◽  
Author(s):  
Roman Husák ◽  
Hynek Hadraba ◽  
Zdeněk Chlup ◽  
Milan Heczko ◽  
Tomáš Kruml ◽  
...  
Keyword(s):  
Grain Size ◽  
Yield Strength ◽  
Complex Oxides ◽  
Oxide Dispersion Strengthened ◽  
Interparticle Spacing ◽  
Oxide Dispersion ◽  
Strengthening Effect ◽  
Dispersion Strengthening ◽  
Doping Element ◽  
Average Grain Size

Oxide dispersion-strengthened (ODS) materials contain homogeneous dispersions of temperature-stable nano-oxides serving as obstacles for dislocations and further pinning of grain boundaries. The strategy for dispersion strengthening based on complex oxides (Y-Hf, -Zr, -Ce, -La) was developed in order to refine oxide dispersion to enhance the dispersion strengthening effect. In this work, the strengthening of EUROFER steel by complex oxides based on Y and elements of the IIIB group (lanthanum, scandium) and IVB group (cerium, hafnium, zirconium) was explored. Interparticle spacing as a dispersoid characteristic appeared to be an important factor in controlling the dispersion strengthening contribution to the yield strength of ODS EUROFER steels. The dispersoid size and average grain size of ODS EUROFER steel were altered in the ranges of 5–13 nm and 0.6–1.7 µm, respectively. Using this strategy, the yield strength of the prepared alloys varied between 550 MPa and 950 MPa depending on the doping element.

Tensile properties of Co-added FeCrAl oxide dispersion strengthened alloy

2021 ◽  
Vol 852 ◽  
pp. 156956
Author(s):  
Shenghua Zhang ◽  
Shigeharu Ukai ◽  
S.M.S. Aghamiri ◽  
Naoko Oono ◽  
Shigenari Hayashi
Keyword(s):  
Tensile Properties ◽  
Oxide Dispersion Strengthened ◽  
Oxide Dispersion ◽  
Oxide Dispersion Strengthened Alloy
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