Feasibility of using Y2Ti2O7 nanoparticles to fabricate high strength oxide dispersion strengthened Fe–Cr–Al steels

Liu, Tong; Wang, Linbo; Wang, Chenxi; Shen, H. Z.; Zhang, Hongtao

doi:10.1016/j.matdes.2015.08.118

Cited by 42 publications

(12 citation statements)

References 49 publications

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“…However, there are also some results to prove that the added Al decreased the strength of ODS alloys [15], which may caused by the coarsed grains and different types of particles (Y-Al-O) compared with the ODS alloys without Al [18,19]. In this present study, in order to figure out the different effect of Al and Ti on the microstructures and mechanical properties of 14Cr ODS alloys.…”

Section: Introductionmentioning

confidence: 72%

The comparison of microstructures and mechanical properties between 14Cr-Al and 14Cr-Ti ferritic ODS alloys

Zhang

Zhou

et al. 2016

Materials & Design

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In this study, two kinds of 14Cr ODS alloys (14Cr-Al and 14Cr-Ti) were investigated to reveal the different effects between Al and Ti on the microstructures and mechanical properties of 14Cr ferritic ODS alloys. The microstructure information such as grains, minor phases of these two alloys has been investigated by high-energy X-ray diffraction and transmission electron microscopy (TEM). The in situ synchrotron X-ray diffraction tensile test was applied to investigate the mechanical properties of these two alloys. The lattice strains of different phases through the entire tensile deformation process in these two alloys were analyzed to calculate their elastic stresses. From the comparison of elastic stress, the strengthening capability of Y 2 T i 2 O 7 is better than TiN in 14Cr-Ti, and the strengthening capability of YAH is much better than YAM and AlN in 14Cr-Al ODS. The dislocation densities of 14Cr-Ti and 14Cr-Al ODS alloys during tensile deformation were also examined by modified Williamson-Hall analyses of peak broadening, respectively. The different increasing speed of dislocation density with plastic deformation reveals the better strengthening effect of Y-Ti-O particles in 14Cr-Ti ODS than that of Y-Al-O particles in 14Cr-Al ODS alloy.

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Section: Introductionmentioning

confidence: 72%

The comparison of microstructures and mechanical properties between 14Cr-Al and 14Cr-Ti ferritic ODS alloys

Zhang

Zhou

et al. 2016

Materials & Design

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“…Because the atomic bonding across the Fe-YTO interface is not fully known, it is difficult to estimate the misfit dislocation network for each of the four ORs. All of the interfaces are semicoherent with misfit strains of at least ∼19%, calculated using the same methods as detailed in our previous paper [39] and in reference [45] . The observed NCSL sizes are reported in Table 1 .…”

Section: Interface Name Orientation Relationshipmentioning

confidence: 99%

Characterization of polyhedral nano-oxides and helium bubbles in an annealed nanostructured ferritic alloy

Stan

Ciston

et al. 2020

Acta Materialia

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“…These techniques are resource and energy consuming and thus non-environmentally friendly; therefore, more economic synthesis methods are required. In [ 56 ], Y 2 Ti 2 O 7 nanoparticles were obtained by annealing Y–Ti hydrides at 900 °C for 1 h, which were then added as an input powder to produce aluminum containing ODS steels. The Y 2 Ti 2 O 7 particles did not decompose, but were transformed into amorphous clusters during mechanical doping.…”

Section: Introductionmentioning

confidence: 99%

Novel Microwave-Assisted Method of Y2Ti2O7 Powder Synthesis

et al. 2020

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In the paper, a novel technique for highly dispersed pyrochlore Y2Ti2O7 is proposed. The experimental results proved that the application of microwave irradiation at a certain stage of calcination allowed synthesizing of Y2Ti2O7 in much shorter time, which ensured substantial energy savings. An increase up to 98 wt.% in the content of the preferred phase with a pyrochlore-type structure Y2Ti2O7 was obtained after 25 h of yttrium and titanium oxides calcination at a relatively low temperature of 1150 °C, while the microwave-supported process took only 9 h and provided 99 wt.% of pyrochlore. The proposed technology is suitable for industrial applications, enabling the fabrication of large industrial amounts of pyrochlore without solvent chemistry and high-energy mills. It reduced the cost of both equipment and energy and made the process more environmentally friendly. The particle size and morphology did not change significantly; therefore, the microwave-assisted method can fully replace the traditional one.

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Feasibility of using Y2Ti2O7 nanoparticles to fabricate high strength oxide dispersion strengthened Fe–Cr–Al steels

Cited by 42 publications

References 49 publications

The comparison of microstructures and mechanical properties between 14Cr-Al and 14Cr-Ti ferritic ODS alloys

The comparison of microstructures and mechanical properties between 14Cr-Al and 14Cr-Ti ferritic ODS alloys

Characterization of polyhedral nano-oxides and helium bubbles in an annealed nanostructured ferritic alloy

Novel Microwave-Assisted Method of Y2Ti2O7 Powder Synthesis

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