Effects of helium on mechanical properties of Armco iron [electronic resource].
- Aiken, S.C : Savannah River Laboratory, 1976. and Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Physical Description:
- Pages: 19 : digital, PDF file
- Additional Creators:
- Savannah River Laboratory and United States. Department of Energy. Office of Scientific and Technical Information
- Helium was charged into Armco iron by the decay of dissolved tritium. The effect of helium on the mechanical properties was measured as a function of temperature. Five at. ppM helium degraded the mechanical properties at temperatures greater than 800/sup 0/K. Intergranular cracks formed in both strained and unstrained portions of the specimen at a temperature of about 1000/sup 0/K but only in the strained portion at a temperature of about 800/sup 0/K. High temperature embrittlement appears to be caused by stress-assisted growth of helium bubbles. The maximum in strength caused by dynamic strain aging at about 470/sup 0/K that occurs in steels was absent in Armco iron that contained tritium and helium. The reason for this absence is not clear, but helium and tritium interacting with the carbon and nitrogen may have an influence on the strength maximum.
- Published through SciTech Connect., 01/01/1976., "dp-ms-76-63", " conf-7609106-5", AIME fall meeting, Niagra Falls, NY, USA, 20 Sep 1976., and Donovan, J.A.
- Funding Information:
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