SEDL / STP / STP1366-EB / STP12446S

Effect of Neutron Irradiation on Mechanical Properties of Cn-Alloy/SS316 Joints

Tsuchiya, K
Research engineer, research engineer and principal scientist, Blanket Irradiation and Analysis Laboratory, Oarai Research Establishment, Japan Atomic Energy Research Institute, Ibaraki-ken,

Nakamichi, M
Research engineer, research engineer and principal scientist, Blanket Irradiation and Analysis Laboratory, Oarai Research Establishment, Japan Atomic Energy Research Institute, Ibaraki-ken,

Kawamura, H
Research engineer, research engineer and principal scientist, Blanket Irradiation and Analysis Laboratory, Oarai Research Establishment, Japan Atomic Energy Research Institute, Ibaraki-ken,

Pages: 12    Published: Jan 2000

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Abstract

The effects of neutron irradiation on tensile properties of the Cu alloys to type 316 stainless steel (SS316) joints fabricated by friction welding method were examined. Additionally, irradiation tests of Al²O³-dispersed copper alloy (Al-15), oxygen free copper (OF-Cu) and SS316 were conducted. The Al-15/SS316 and OF-Cu/SS316 joints were irradiated in the Japan Materials Xesting Reactor (JMTR), and tension tests and metallographical observation of these joints have been performed as the post irradiation examination (PIE). In the tension tests of Al-15/SS316 and OF-Cu/SS316 joints, all irradiated specimens fractured at the copper sides. In the tension tests at 293K, tensile strength of the Al-15/SS316 joints irradiated at 693K was equal to that of the base metal (Al-15) irradiated in the same condition. On the other hand, tensile strength of Al-15/SS316 joints was smaller than that of Al-15 in the tension tests at the same temperature as each irradiation temperature. In this study, useful data of the irradiated Al-15/SS316 and OF-Cu/SS316 joints fabricated by friction welding method were obtained to design fusion reactors.