Degradation Modes of Alloy 22 in Yucca Mountain Repository Conditions

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The nuclear waste package design for Yucca Mountain (Nevada, USA), in its current configuration, consists of a double wall cylindrical container fabricated using a highly corrosion resistant Ni-based Alloy 22 for the outer barrier and type 316 stainless steel for the inner structural vessel. A mailbox-shaped drip shield fabricated primarily using Ti Grade 7 will cover the waste packages. The environmental degradation of the relevant materials have been extensively studied and modeled for over ten years. This paper reviews the state-of-the-art understanding of the degradation modes of Alloy 22 (N06022) due to its interaction with the predicted in-drift mountain conditions ... continued below

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PDF-file: 26 pages; size: 0.8 Mbytes

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Hua, F; Gordon, G M; Mon, K G & Rebak, R B November 5, 2005.

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Description

The nuclear waste package design for Yucca Mountain (Nevada, USA), in its current configuration, consists of a double wall cylindrical container fabricated using a highly corrosion resistant Ni-based Alloy 22 for the outer barrier and type 316 stainless steel for the inner structural vessel. A mailbox-shaped drip shield fabricated primarily using Ti Grade 7 will cover the waste packages. The environmental degradation of the relevant materials have been extensively studied and modeled for over ten years. This paper reviews the state-of-the-art understanding of the degradation modes of Alloy 22 (N06022) due to its interaction with the predicted in-drift mountain conditions including temperature and types of electrolytes. Subjects discussed include thermal aging and phase stability, dry oxidation, general and localized corrosion, stress corrosion cracking and hydrogen induced cracking.

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PDF-file: 26 pages; size: 0.8 Mbytes

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  • Presented at: Corrosion/2006 Conference and Exposition, San Diego, CA, United States, Mar 12 - Mar 16, 2006

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  • Report No.: UCRL-CONF-216906
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 881894
  • Archival Resource Key: ark:/67531/metadc886229

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  • November 5, 2005

Added to The UNT Digital Library

  • Sept. 21, 2016, 2:29 a.m.

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  • Nov. 23, 2016, 12:37 p.m.

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Hua, F; Gordon, G M; Mon, K G & Rebak, R B. Degradation Modes of Alloy 22 in Yucca Mountain Repository Conditions, article, November 5, 2005; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc886229/: accessed August 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.