Effect of aging on the general corrosion and stress corrosion cracking of uranium--6 wt % niobium alloy | Zendy

J. W. Koger | Zendy; A. M. Ammons | Zendy; Jennifer Ferguson | Zendy

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Effect of aging on the general corrosion and stress corrosion cracking of uranium--6 wt % niobium alloy

Author(s) -

J. W. Koger,

A. M. Ammons,

Jennifer Ferguson

Publication year - 1975

Publication title -

osti oai (u.s. department of energy office of scientific and technical information)

Language(s) - English

Resource type - Reports

DOI - 10.2172/4118307

Subject(s) - materials science , alloy , corrosion , metallurgy , niobium , stress corrosion cracking , ultimate tensile strength , elongation , uranium , stress (linguistics) , phase (matter) , cracking , microstructure , composite material , chemistry , linguistics , philosophy , organic chemistry

Mechanical properties of the uranium-6 wt percent niobium alloy change with aging time and temperature. In general, the ultimate tensile strength and hardness reach a peak, while elongation becomes a minimum at aging temperatures between 400 and 500$sup 0$C. The first optical evidence of a second phase was in the 400$sup 0$C-aged alloy, while complete transformation to a two-phase structure was seen in the 600$sup 0$C-aged alloy. The maximum-strength conditions correlate with the minimum stress corrosion cracking (SCC) resistance. The maximum SCC resistance is found in the as-quenched and 150, 200, and 600$sup 0$C-aged specimens. The as-quenched and 300$sup 0$C-aged specimens had the greatest resistance to general corrosion in aqueous chloride solutions; the 600$sup 0$C-aged specimen had the least resistance. (auth

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