SYMPOSIA PAPER Published: 01 January 1986
STP32992S

Use of the Disk Bend Test to Assess Irradiation Performance of Structural Alloys

Source

The disk bend test has been a valuable technique for rapid evaluation of the ductility of a large number of alloys under consideration for use as structural materials in the breeder and fusion reactor programs. The test employs the 3-mm-diameter, 0.3-mm-thick microscopy and density disk specimen, conserving valuable experimental volume in the limited reactor space available.

The test involves bending the disk symmetrically about the center, producing a simple, axisymmetric stress state. Experimental results are in agreement with a theoretical analysis of the bend configuration. The advantages and limitations of the technique are discussed.

The test has shown that commercial precipitation-strengthened alloys and the Path B alloys of the U.S. Fusion Program exhibit unacceptably low ductilities following irradiation. This was demonstrated for a number of alloys, in a variety of thermomechanical conditions, including cold worked, cold worked and aged, and solution treated and aged.

Author Information

Hamilton, ML
Westinghouse Hanford Company, Richland, WA
Huang, FH
Westinghouse Hanford Company, Richland, WA
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Details
Developed by Committee: E10
Pages: 5–16
DOI: 10.1520/STP32992S
ISBN-EB: 978-0-8031-4960-1
ISBN-13: 978-0-8031-0440-2