논문 국내 국내전문학술지(KCI급) Estimation of fracture toughness of X65 and X70 steels by DWTT
- 학술지 구분 국내전문학술지(KCI급)
- 게재년월 2012-06
- 저자명 Ye-Won Cho ․Young-ho Song․Jeong-Min Kim․Woo-Sik Kim*․ †Joon-Sik Park
- 학술지명 Journal of the Korean Institute of Gas
- 발행처명 Journal of the Korean Institute of Gas
- 발행국가 국내
- 논문언어 한국어
- 전체저자수 5
홈페이지
논문 초록 (Abstract)
DWTT (Drop Weigh Tearing Test) is one critical method that can exhibit the fracture properties of line pipe steel, since it estimates the properties with real pipe steel. In this study, the ductile portion, inverse fracture ratio and absorbed energy of API X65 and X70 line pipe steels were estimated with temperature variation. Both steels showed that the ratio of ductile area and absorbed energy were decreased with respect to decreasing the test temperature. However, while the ductile fracture behavior exhibited until for the X70 steel, but it showed until for the X65 steel. The fracture properties were discussed with respect to test temperatures.