Effect of hydrogen treatment on properties and structure development in Zr–2.5Nb alloy

Flow stresses at 600°C of the annealed and quenched Zr–2.5Nb alloy with hydrogen content varying from 0.2 to 20at%, and microstructure development of the alloy after deformation and subsequent vacuum annealing at 580°C were studied. It was found that increase in the volume fraction of the βZr-phase...

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Bibliographic Details
Published in:Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2014-07, Vol.608, p.25-34
Main Authors: Murzinova, M.A., Shagiev, M.R., Srivastava, D., Manikrishna, K.V., Neogy, S., Dey, G.K.
Format: Article
Language:English
Subjects:
Alloy development
Deformation
Flow stress
Heat treatment
Hot deformation
Hydrogen
Microstructure
Microstructure development
Quenching (cooling)
Vacuum annealing
Yield strength
Zirconium
Zirconium base alloys
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Summary:Flow stresses at 600°C of the annealed and quenched Zr–2.5Nb alloy with hydrogen content varying from 0.2 to 20at%, and microstructure development of the alloy after deformation and subsequent vacuum annealing at 580°C were studied. It was found that increase in the volume fraction of the βZr-phase due to hydrogen alloying resulted in substantial decrease in the flow stresses and led to αZr-grain/subgrain refinement to submicron level during the deformation at 600°C. Vacuum annealing resulted in decrease of the hydrogen content and was accompanied by αZr-grain growth.
ISSN:0921-5093
1873-4936
DOI:10.1016/j.msea.2014.04.016