Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678
The Effect of 800 MeV Proton Irradiation on the Mechanical Properties of Tungsten
Stuart Andrew MaloyMichael Richard JamesWalter Sommer, jr.Gordon Jesse Willcutt, jr.Manuel LopezTobias James Romero
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2002 Volume 43 Issue 4 Pages 633-637


For the Accelerator Production of Tritium (APT) and the Accelerator Driven Transmutation Facility (ADTF), tungsten is being proposed as a target material to produce neutrons. Previous work has shown that the mechanical properties of tungsten are degraded from irradiation in a fission neutron flux but little work has been performed on the irradiation of tungsten in a high energy proton beam. In this study, tungsten rods were irradiated at the 800 MeV Los Alamos Neutron Science Center (LANSCE) proton accelerator for six months. To avoid corrosion during irradiation, the rods were slip fit with thin (0.25 mm thick) 304L stainless steel (SS) or (0.125 mm thick) annealed Alloy 718 tubing. After irradiation to a maximum dose in the tungsten of 23.3 dpa at Tirr=50–270°C, the clad rods were opened in the hot cells and the tungsten was removed. The tungsten was then sliced into short compression specimens (∼ 3 mm long). Hardness tests and compression tests were performed on the tungsten rods to assess the effect of irradiation on their mechanical properties. Results show an increase in hardness with dose and irradiation temperature and an increase in yield stress with dose.

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© 2002 The Japan Institute of Metals and Materials
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