Evolution of Static Physical Properties in Plutonium by Self-irradiation Damage

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The alpha-decay of plutonium leads to the age-related change in physical properties. This paper presents updated results of age-related effects on enriched and reference alloys measured from immersion density, dilatometry, and mechanical tests. After nearly 100 equivalent years of aging, both the immersion density and dilatometry show that the enriched alloys are decreasing in density by less than 0.02% per year and now exhibit a near linear density decrease, without void swelling. The tensile tests show that the aging process increases the strength of plutonium alloys, followed by possible saturation past 70 equivalent years of age. The ultimate goal of ... continued below

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Chung, B W; Lema, K E & Hiromoto, D S April 13, 2010.

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The alpha-decay of plutonium leads to the age-related change in physical properties. This paper presents updated results of age-related effects on enriched and reference alloys measured from immersion density, dilatometry, and mechanical tests. After nearly 100 equivalent years of aging, both the immersion density and dilatometry show that the enriched alloys are decreasing in density by less than 0.02% per year and now exhibit a near linear density decrease, without void swelling. The tensile tests show that the aging process increases the strength of plutonium alloys, followed by possible saturation past 70 equivalent years of age. The ultimate goal of this work is to develop capabilities to predict physical properties changed by aging effects.

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PDF-file: 6 pages; size: 0.7 Mbytes

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  • Presented at: Materials Research Society, San Francisco, CA, United States, Apr 05 - Apr 09, 2010

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  • Report No.: LLNL-PROC-427943
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 1009221
  • Archival Resource Key: ark:/67531/metadc840587

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Office of Scientific & Technical Information Technical Reports

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  • April 13, 2010

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  • May 19, 2016, 3:16 p.m.

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  • Nov. 28, 2016, 1:48 p.m.

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Chung, B W; Lema, K E & Hiromoto, D S. Evolution of Static Physical Properties in Plutonium by Self-irradiation Damage, article, April 13, 2010; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc840587/: accessed October 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.