압력용기용 SA516/70강의 고온파괴인성평가

• Published in: Han-guk haeyang gonghak hoeji (Online) Vol. 15; no. 2; pp. 99 - 104
• Main Authors: 박경동(K. D. PARK), 김정호(J. H. KIM), 윤한기(H. K. Yoon), 박원조(W. J. PARK)
• Format: Journal Article
• Language: Korean
• Published: 한국해양공학회 2001
• Subjects: Fracture resistance curve 파괴저항곡선; Pressure vessel steel 압력용기용; Unloading compliance method 제하컴플라이언스법; Side groove effect 측면홈 효과; High temperature fracture toughness 고온파괴인성
• ISSN: 1225-0767; 2287-6715

Elastic-plastic fracture toughness $J_{lc}$ can be used as an effective design criterion in elastic plastic fracture mechanics. Most of these systems are$J_{lc}$ $J_{lc}$ value at high temperature must be determined for use of integrity evaluation and designing of such systems. Elastic-plastic fracture toughness $J_{lc}$ tests were performed on SA516/70 carbon steel plate and test results were analyzed according to ASTM E 813-87, ASTM E 813-89 and ASTM E 1152-87.safety and integrity are required for reactor pressure vessels because, they are operated in high temperature. There are single specimen method, which used as evaluation of safety and integrity for reactor pressure vessels. In this study, elastic-plastic fracture toughness($J_{lc}$) and J-$\Delta$a of SA 516/70 steel used as reactor pressure vessel steel are measured and evaluated at room temperature, 150$^{\circ}C $, 250$^{\circ}C $ and 370$^{\circ}C $ according to unloading compliance method.