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

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Description

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 ... continued below

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Pages: 26

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Koger, J.W.; Ammons, A.M. & Ferguson, J.E. November 1, 1975.

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Description

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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Pages: 26

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Dep. NTIS

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  • Other Information: Orig. Receipt Date: 30-JUN-76

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  • Report No.: Y--1999
  • Grant Number: W-7405-ENG-26
  • DOI: 10.2172/4118307 | External Link
  • Office of Scientific & Technical Information Report Number: 4118307
  • Archival Resource Key: ark:/67531/metadc871856

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  • November 1, 1975

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  • Sept. 16, 2016, 12:32 a.m.

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  • Nov. 23, 2016, 5:13 p.m.

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Koger, J.W.; Ammons, A.M. & Ferguson, J.E. Effect of aging on the general corrosion and stress corrosion cracking of uranium--6 wt % niobium alloy, report, November 1, 1975; United States. (digital.library.unt.edu/ark:/67531/metadc871856/: accessed August 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.