Hot deformation behavior and microstructure features of FeCrAl–ODS alloy

Long, Dijun; Qiu, Shaoyu; Liu, Wenbo; Sun, Yun; Luo, Wei; Liu, Huiqun; Zhang, Ruiqian

doi:10.1007/s42243-021-00733-9

Cited by 3 publications

(1 citation statement)

References 27 publications

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“…FeCrAl alloys have immense potential for application as accident-tolerant-fuel (ATF)-cladding materials owing to their excellent mechanical properties and resistance to steam oxidation and corrosion at high temperature (HT). [1][2][3][4] In addition to the main elements, FeCrAl alloys contain micro-alloying elements such as Mo, Nb, and Zr. [5][6][7] Due to the high content of Cr (%13 wt%) and Al (%5 wt%), FeCrAl alloys maintain a body-centered-cubic (BCC) structure up to their melting point, without phase transformation.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Precipitation of Laves Phase in FeCrAl Alloy with Zr Addition

Liu

et al. 2023

steel research int.

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FeCrAl alloy is one of potential candidates for accident‐tolerant‐fuel (ATF)‐cladding materials due to its excellent oxidation and corrosion resistance at accident temperature, combining good mechanical properties at service temperature. Alloying strategy is an important way for improving comprehensive properties of FeCrAl alloy through the precipitation of fine Laves phase. Zr alloying can stabilize the Laves phase due to its lower diffusion coefficient and solubility in body‐centered‐cubic ferrite matrix. Herein, it is found that Zr addition changes the dynamic precipitation features of Laves phase in FeCrAl alloy during high‐temperature deformation, from only one type of Fe2M (M = Nb, Mo, Ta) Laves phase to Fe2Zr combining Fe2M‐type Laves phase. The Fe2Zr‐type Laves phase precipitates dynamically first, and the interface precipitates between which with ferrite matrix creates more nucleation sites for subsequent precipitation of Fe2M Laves phase. The results can be possibly applied for alloy design and microstructure tailoring in series of FeCrAl alloys used for ATF cladding in the near future.

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Section: Introductionmentioning

confidence: 99%

Dynamic Precipitation of Laves Phase in FeCrAl Alloy with Zr Addition

Liu

et al. 2023

steel research int.

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Processing map and dynamic recrystallization behaviours of 316LN-Mn austenitic stainless steel

Sheng,

Qiao,

Zhai

et al. 2023

Int J Miner Metall Mater

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High-Temperature Creep Resistance of FeAlOY ODS Ferritic Alloy

Dymáček,

Jarý,

Bártková

et al. 2024

Materials

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A significant effort in optimizing the chemical composition and powder metallurgical processing led to preparing new-generation ferritic coarse-grained ODS alloys with a high nano-oxide content. The optimization was aimed at high-temperature creep and oxidation resistance at temperatures in the range of 1100–1300 °C. An FeAlOY alloy, with the chemical composition Fe–10Al–4Cr–4Y2O3 (wt. %), seems as the most promising one. The consolidation of the alloy is preferably conducted by hot rolling in several steps, followed by static recrystallization for 1 h at 1200 °C, which provides a stable coarse-grain microstructure with homogeneous dispersion of nano-oxides. This represents the most cost-effective way of production. Another method of consolidation tested was hot rotary swaging, which also gave promising results. The compression creep testing of the alloy at 1100, 1200, and 1300 °C shows excellent creep performance, which is confirmed by the tensile creep tests at 1100 °C as well. The potential in such a temperature range is the target for possible applications of the FeAlOY for the pull rods of high-temperature testing machines, gas turbine blades, or furnace fan vanes. The key effort now focuses on expanding the production from laboratory samples to larger industrial pieces.

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Hot deformation behavior and microstructure features of FeCrAl–ODS alloy

Cited by 3 publications

References 27 publications

Dynamic Precipitation of Laves Phase in FeCrAl Alloy with Zr Addition

Dynamic Precipitation of Laves Phase in FeCrAl Alloy with Zr Addition

Processing map and dynamic recrystallization behaviours of 316LN-Mn austenitic stainless steel

High-Temperature Creep Resistance of FeAlOY ODS Ferritic Alloy

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