期刊
JOURNAL OF NUCLEAR MATERIALS
卷 393, 期 1, 页码 36-46出版社
ELSEVIER
DOI: 10.1016/j.jnucmat.2009.05.003
关键词
-
资金
- Office of Fusion Energy Sciences
- US Department of Energy [DE-AC05-00OR22725]
Tensile and fracture toughness properties of a precipitation-hardened CuCrZr alloy were investigated in two heat treatment conditions: solutionized, water quenched and aged (CuCrZr SAA), and hot isostatic pressed, solutionized, slow-cooled and aged (CuCrZr SCA). The second heat treatment simulated the manufacturing cycle for large components, and is directly relevant for the ITER divertor components. Specimens were neutron irradiated at similar to 80 degrees C to two iluences, 2 x 10(24) and 2 x 10(25) n/m(2) (E > 0.1 MeV), corresponding to displacement doses of 0.15 and 1.5 displacements per atom (dpa). Tensile and fracture toughness tests were carried out at room temperature. Significant irradiation hardening and plastic instability at yield occurred in both heat treatment conditions with a saturation dose of,.,0.1 dpa. Neutron irradiation slightly reduced fracture toughness in CuCrZr SAA and CuCrZr SCA. The fracture toughness of CuCrZr remained high up to 1.5 dpa (J(Q) > 200 kJ/m(2)) for both heat treatment conditions. Published by Elsevier B.V.
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