Effect of zirconium content on mechanical properties of ODS FeCrAl alloy

Recent Progress on Creep Properties of ODS FeCrAl Alloys for Advanced Reactors

“…Adding the Zr element to the ODS FeCrAl alloy can change its microstructure: the type of dispersed particles changes from Y-Al-O to Y-Zr-O (mainly Y4Zr3O12), the size of Y-Zr-O particles is significantly finer than Y-Al-O particles, and the corresponding number density also improves [37]. Previous work has also confirmed that the addition of Zr content at 0.6 wt.% had the smallest average particle size and the highest mechanical properties [25]. Moreover, there are studies to change the type of dispersed particles by adding the Hf element to the ODS FeCrAl alloy.…”

Enhanced Strength–Ductility Combination by Introducing Bimodal Grains Structures in High-Density Oxide Dispersion Strengthened Fecral Alloys Fabricated by Spark Plasma Sintering

“…Orowan by-pass mechanism were described to obtain the nano-oxide strengthening between 100MPa and 400MPa in (0-1.2Zr) ODS FeCrAl alloys. In fact, the α(r) were from 0.32 to 0.79 in (0-1.2Zr) ODS FeCrAl alloys, which was the hard particle [12]. And also, Li surveyed the influence of hot rolling process on mechanical properties of 15Cr-4Al ODS FeCrAl alloys, and…”

“…14(i), it could be seen that there were much more ductile regions from various layers in 40H than those in 20H, which meant that cracks were more likely to pass through various layers and showed a river-like fracture during tensile tests. In addition, the transfer of cracks between different layers required high energy, leaving a large number of dimples [12]. Thus, high density dimples appeared in Fig.…”

“…added the hot forging technology after MA and HE in Fe-13Cr-5Al ODS alloys to improve the mechanical properties. The elongation was about 20%, while the ultimate stress was decreased to be less than 700MPa, and the ultimate stress was obviously increased to be more than 1000MPa with a lower elongation of 16%, when 0.6% Zr element was added in the matrix [12]. Meanwhile, Ukai, et, al. studied the effect of the content of Cr and Al elements on the mechanical properties for ODS FeCrAl alloys, since both Cr and Al were vital elements with synergistic effects in strength and ductility.…”