Grain-boundary cavitation and weld-underbead cracking in DOP-26 iridium alloy

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Description

Plutonium-238 oxide fuel pellets for the General Purpose Heat Source Radioisotopic thermoelectric generators to be used on the NASA Galileo Mission to Jupiter and the International Solar Polar Mission are produced and encapsulated in DOP-26 iridium alloy at the Savannah River Plant. DOP-26 iridium alloy was developed at the Oak Ridge National Laboratory and contains nominally 0.3 weight-percent tungsten, 60-ppM thorium and 50-ppM aluminum. Underbead cracks occasionally occur in the girth weld on the iridium alloy cladding in the area where the gas tungsten arc is quenched. A variety of electron beam techniques have been used to determine the cause ... continued below

Physical Description

Pages: 11

Creation Information

Mosley, W.C. Jr. January 1, 1983.

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  • Savannah River Laboratory
    Publisher Info: Du Pont de Nemours (E.I.) and Co., Aiken, SC (USA). Savannah River Lab.
    Place of Publication: Aiken, South Carolina

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Description

Plutonium-238 oxide fuel pellets for the General Purpose Heat Source Radioisotopic thermoelectric generators to be used on the NASA Galileo Mission to Jupiter and the International Solar Polar Mission are produced and encapsulated in DOP-26 iridium alloy at the Savannah River Plant. DOP-26 iridium alloy was developed at the Oak Ridge National Laboratory and contains nominally 0.3 weight-percent tungsten, 60-ppM thorium and 50-ppM aluminum. Underbead cracks occasionally occur in the girth weld on the iridium alloy cladding in the area where the gas tungsten arc is quenched. A variety of electron beam techniques have been used to determine the cause of cracking. Results are discussed. (WHK)

Physical Description

Pages: 11

Notes

NTIS, PC A02/MF A01.

Source

  • 18. annual Microbeam Analysis Society conference, Phoenix, AZ, USA, 8 Aug 1983

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Identifier

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  • Other: DE83015406
  • Report No.: DP-MS-82-103
  • Report No.: CONF-830815-9
  • Grant Number: AC09-76SR00001
  • Office of Scientific & Technical Information Report Number: 5939599
  • Archival Resource Key: ark:/67531/metadc1099247

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • January 1, 1983

Added to The UNT Digital Library

  • Feb. 18, 2018, 3:59 p.m.

Description Last Updated

  • May 10, 2018, 8:27 p.m.

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Mosley, W.C. Jr. Grain-boundary cavitation and weld-underbead cracking in DOP-26 iridium alloy, article, January 1, 1983; Aiken, South Carolina. (digital.library.unt.edu/ark:/67531/metadc1099247/: accessed August 15, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.