발간논문

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Vol.39, No.2, 139 ~ 146, 2001
Title
Effect of Electron - Beam Irradiation on Irradiation Damage in Heat Affected Zone of Welded STS304 Steel
배동수Dong Su Bae,정호신Ho Shin Jeong,목하박사Hiroshi Kinoshita,고교평칠랑Heishichiro Takahashi
Abstract
The heat affected zone of a welded STS304 steel has been irradiated in an 1300 keV high voltage electron microscope at 673K and up to 5.4 dpa (displacements per atom) to study the effect of electron-beam irradiation on irradiation damage microstructure. The dislocation loop density of initial irradiation state was increased with electron-beam irradiation. Void size, void number density and void swelling percentage were increased and then saturated gradually with irradiation dose. The depletion of Cr and the enrichment of Ni were also recognized in HAZ part of welded STS304 steel at the grain boundary by EDS analysis, as reported already the same tendency for matrix material.
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