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STS304 강의 용접 열영향부의 조사 손상에 미치는 전자선 조사의 영향
배동수,정호신,목하박사,고교평칠랑 대한금속재료학회(대한금속학회) 2001 대한금속·재료학회지 Vol.39 No.2
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.