IRRADIATION-ENCHANCED CREEP OF COLD-WORKED Z4-2.5NB TUBES AND HELICAL-SPRINGS PDF Download
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Languages : en
Pages : 20
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 20
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Book Description
Author: A. R. Causey
Publisher: Chalk River, Ont. : Reactor Materials Research Branch, Chalk River Laboratories
ISBN:
Category : Anisotropy
Languages : en
Pages : 34
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Book Description
This report investigates the anistrophy of irradiation-enhanced creep of cold-worked Zr-2.5Nb at 548-563 K using internally-pressurized capsules and axially loaded helical-springs. The test specimens were machined from small diameter extruded and cold-worked tubing that had crystallographic texture and microstructure similar to that of CANDU power reactor pressure tubes. The biaxial creep capsules and the helical-springs were irradiated for 9,525 and 16,670 hours, respectively, in a fast neutron flux.
![Relationship Between Swelling and Irradiation Creep in Cold-worked PCA Stainless Steel Irradiated to [approximately]178 Dpa at [approximately]400[degrees]C. PDF](https://books.google.com/books/content/images/frontcover/HKDWjwEACAAJ?fife=w80-h100)
Author:
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Category :
Languages : en
Pages :
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Book Description
The eighth and final irradiation segment for pressurized tubes constructed from the fusion Prime Candidate Alloy (PCA) has been completed in FFTF. At 178 dpa and [approximately]400[degrees]C, the irradiation creep of 20% cold-worked PCA has become dominated by the [open-quotes]creep disappearance[close-quotes] phenomenon. The total diametral deformation rate has reached the limiting value of 0.33%/dpa at the three highest stress levels employed in this test. The stress-enhancement of swelling tends to camouflage the onset of creep disappearance, however, requiring the use of several non-traditional techniques to extract the creep coefficients. No failures occurred in these tubes, even though the swelling ranged from [approximately]20 to [approximately]40%.
