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Embrittlement of Molybdenum by Neutron Radiation

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Abstract

Commercially pure molybdenum specimens were irradiated in the Materials Testing Reactor for an estimated exposure of 1.9 to 5.9×1020 thermal nvt. Prior to irradiation, the material was ductile in the tension test; whereas after irradiation, it was brittle. The results of tension tests conducted at various temperatures revealed that the transition temperature for this material had been increased from −30° to +70°C as a result of the radiation exposure. From metallographic studies, it is concluded that the embrittlement is due to submicroscopic changes which raise the flow stress-temperature curve of the material.

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Author information

Authors and Affiliations

  1. Knolls Atomic Power Laboratory, General Electric Co., Schenectady, USA

    C. A. Bruch, W. E. McHugh & R. W. Hockenbury

Authors
  1. C. A. Bruch
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  2. W. E. McHugh
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  3. R. W. Hockenbury
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Additional information

Discussion of this paper, TP 3940E, may be sent, 2 copies, to AIME by Apr. 1, 1955. Manuscript, Sept. 10, 1954. Chicago Meeting, February 1955.

Knolls Atomic Power Laboratory is operated by General Electric Co. for the United States Atomic Energy Commission under Contract No. W-31-109 Eng. 52.

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Bruch, C.A., McHugh, W.E. & Hockenbury, R.W. Embrittlement of Molybdenum by Neutron Radiation. JOM 7, 281–285 (1955). https://doi.org/10.1007/BF03377490

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  • DOI: https://doi.org/10.1007/BF03377490

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