Microstructural characteristics of cold-rolled Zr-2.5Nb alloy annealed near the monotectoid temperature

Chai, Linjiang; Wu, Hao; Wang, ShuYan; Luan, Baifeng; Wu, Yue; Huang, Xiaoyu

doi:10.1007/s11431-017-9130-4

Cited by 7 publications

(2 citation statements)

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“…Zirconium materials containing β phase are characterized by good mechanical properties. For melted zirconium alloys, the annealing is conducted near the monotectoid temperature of 620 ± 20 • C [5,11,47]. The use of annealing allows for the reduction of thermal or mechanical stresses arising in technological processes.…”

Section: Discussionmentioning

confidence: 99%

“…In the Zr-5 mass% Nb alloys (melted materials), the α-phase had a plate-like shape with the β-phase distributed between the α-grains [46] or at the grain boundaries for Zr-2.5 mass% Nb [47]. With the increase in proportion of niobium in the material, more of the β phase appeared, and the grains stayed more isometric because of the cubic structure of this phase.…”

Section: Microstructures Of Sintered and Extruded Zr-xnb Materialsmentioning

confidence: 99%

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The Pressure Compaction of Zr-Nb Powder Mixtures and Selected Properties of Sintered and KOBO-Extruded Zr-xNb Materials

et al. 2021

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Materials were obtained from commercial zirconium powders. 1 mass%, 2.5 mass% and 16 mass% of niobium powders were used as the reinforcing phase. The SPS method and the extrusion method classified as the SPD method were used. Relative density materials of up to 98% were obtained. The microstructure of the sintered Zr-xNb materials differs from that of the extruded materials. Due to the flammability of zirconium powders, no mechanical alloying was used; only mixing of zirconium and niobium powders in water and isopropyl alcohol. Niobium was grouped in clusters with an average niobium particle size of about 10 μm up to 20 μm. According to the Zr-Nb phase equilibrium system, the stable phase at RT was the hexagonal α-phase. The tests were carried out for materials without the additional annealing process. The effect of niobium as a β-Zr phase stabilizer is confirmed by XRD. Materials differed in their phase composition, and for both methods the β-Zr phase was present in obtained materials. A very favorable effect of niobium on the increase in corrosion resistance was observed, compared to the material obtained from the powder without the addition of niobium.

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Section: Discussionmentioning

confidence: 99%

Section: Microstructures Of Sintered and Extruded Zr-xnb Materialsmentioning

confidence: 99%