NDLI: Mechanical and Corrosion Characteristics of Zr + 2.5% Nb Zirconium Reactor Alloy

Content Provider	Springer Nature Link
Author	Stukalov, A. I. Gritsina, V. M. Chernyaeva, T. P. Baturevich, D. A.
Copyright Year	2000
Abstract	The results of structural and phase hardening of pipes made of Zr + 2.5% Nb alloy show that ultrahigh-frequency thermal treatment of pipes (fast heating to the temperature of existence of the β-phase followed by sharp cooling and annealing in the high-temperature range of the α-phase) destroys the texture and forms a fine-grained structure (the grain diameter is about 1 μm) with numerous transitional twins and a high density of precipitations of the secondary β-niobium phase (∼ 10$^{16}$ cm$^{−3}$). In this state, the alloy is rather strong and plastic (at room temperature, σ$_{u}$ ≈ 650 MPa, σ$_{0.2}$ ≈ 550 MPa, and δ ∼ 20% both in the longitudinal and transverse directions). The efficiency of hardening by ultrahigh-frequency thermal treatment is not reduced with increase in the temperature of testing up to 500°C. Corrosion tests of channel pipes made of Zr + 2.5% Nb alloy subjected to ultrahigh-frequency thermal treatment in water containing various amounts of oxygen (from 0.1–0.3 to 600 mg/kg) at temperatures of 285–350°C for 700–6600 h under static conditions and in reactor water of the Ignalina Nuclear Power Plant for ∼ 5000 h under dynamic conditions showed that the corrosion resistance of this alloy is on a par with the corrosion resistance of the material of assembly channels of high-power channel reactors subjected to a standard treatment.
Starting Page	669
Ending Page	674
Page Count	6
File Format	PDF
ISSN	1068820X
Journal	Materials Science
Volume Number	36
Issue Number	5
e-ISSN	1573885X
Language	English
Publisher	Kluwer Academic Publishers-Plenum Publishers
Publisher Date	2000-01-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Characterization and Evaluation Materials Mechanics
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Condensed Matter Physics Materials Science Mechanical Engineering

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