Corrosion and fatigue of super alloys in simulated HTGR helium environment at very high temperatures

Conference · Mon Dec 31 23:00:00 EST 1973

OSTI ID:4113257

Kondo, T; Kikuyama, T; Shindo, M; Tedman, Jr, C S ^[1]

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1. ed.

Corrosion and its effect on fatigue in some commercial super alloys in helium-base environments were studied. The helium-base mixtures were prepared for chemically simulating the HTGR coolant, in which the alloys were tested. The low oxidizing potential in the helium caused selective oxidation of specific alloy constituents at elevated temperatures, and intergranular attack as well as loss of oxide adherence resulted. The roles of alloy constituents and the chemical condition of the environment were investigated in connection with the kinetics of corrosion, the surface morphology, the transport of nuclear- hazardarous species and the corrosion-assisted fracture. 8 references. (auth)

• Research Organization: Japan Atomic Energy Research Inst., Tokai-mura
• NSA Number: NSA-33-013961
• OSTI ID: 4113257
• Country of Publication: United States
• Language: English

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HELIUM
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PRIMARY COOLANT CIRCUITS
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