Density changes of generation 1. 5 and 2. 0 copper alloys irradiated at 411--414 degrees C and 529 degrees C in FFTF-MOTA

Technical Report · Fri Jun 01 04:00:00 EDT 1990

DOI:https://doi.org/10.2172/6698306· OSTI ID:6698306

Garner, F A ^[1]; Brager, H R ^[2]; Anderson, K R ^[3]

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1. Pacific Northwest Lab., Richland, WA (USA)
2. Westinghouse Hanford Co., Richland, WA (USA)
3. Illinois Univ., Urbana, IL (USA)

The intrinsic swelling rate of pure copper and Cu-5Ni appears to be {approximately} 5%/dpa at {approximately} 400{degree}C. At 529{degree}C the swelling rate of these alloys appears to be much lower. In more complex precipitation-strengthened alloys phase instabilities appear to play a role in determining the onset of void swelling and also the density of the unvoided matrix. Dispersion-hardened alloys were found to be very resistant to swelling. Large amounts of oxygen in an alloy, however, can overcome the swelling resistance imparted by very high densities of oxide dispersoids. Internally oxidized Gildcop alloys offer the most pronounced resistance to swelling, with the transient regime progressively extended as alumina content increases. Unfortunately, laser welding destroys the swelling resistance of dispersion-strengthened alloys. 10 refs., 8 figs.

• Research Organization: Pacific Northwest Lab., Richland, WA (USA)
• Sponsoring Organization: DOE/NE
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 6698306
• Report Number(s): PNL-SA-17636; ON: DE90015291
• Country of Publication: United States
• Language: English

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ALLOYS
ALUMINIUM ALLOYS
COPPER
COPPER ALLOYS
COPPER BASE ALLOYS
DENSITY
ELEMENTS
MATERIALS
METALS
NICKEL ALLOYS
PHYSICAL PROPERTIES
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
SWELLING
THERMONUCLEAR REACTOR MATERIALS
TRANSITION ELEMENTS