Mechanical properties of structural materials for FBR sodium application. Semi-annual progress report for period ending January 31, 1982
Metallographic evaluations of the CRBR core barrel forging material, creep rupture tested at 538/sup 0/C in air, were performed. The majority of the specimens had a knobby appearance on the surface of the gage section. The stress-rupture life for sodium pre-exposed Type 316 stainless steel performed at 538/sup 0/C in flowing sodium is increased by a factor of at least three at a stress of 275.8 MPa (40.0 ksi) when compared to tests in sodium for as-received material (mill annealed) at the same conditions. Creep-rupture tests of mill annealed type 316 stainless steel in flowing sodium at 593/sup 0/C and 224.1 MPa (32.5 ksi), involving different gage diameters of 0.25, 0.15, and 0.10 inches, were evaluated. A creep-rupture test of an alloy 718 specimen tested at 649/sup 0/C and 344.7 MPa (50.0 ksi) in the flowing sodium, after exposure to flowing sodium at 649/sup 0/C for 10,000 hours, ruptured after 9617 hours. It is estimated that after nearly 20,000 hours in sodium, the rupture life was reduced approximately 30% when compared to results for as-received material tested in flowing sodium (and air).
- Research Organization:
- Westinghouse Electric Corp., Madison, PA (USA). Advanced Reactors Div.
- DOE Contract Number:
- AT02-80CH94049
- OSTI ID:
- 5277366
- Report Number(s):
- DOE/CH/94049-T1; ON: DE82013501
- Country of Publication:
- United States
- Language:
- English
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