AISI 304 스테인리스 강으로 제작된 LNG배관 용접부의 극저온 샤르피 충격시험 (Cryogenic Charpy Imapct Test Based on GTAW Method of AISI 304 Stainless Steel for LNG Pipeline)

서지정보

· 발행기관 : 대한용접접합학회
· 수록지 정보 : 대한용접접합학회지 / 32권 / 3호 / 89 ~ 94페이지
· 저자명 : 김정현, 최성웅, 박두환, 이제명

초록

AISI 304 austenitic stainless steel is widely used for LNG pipes for LNG transmission thanks to its goodmetallurgical and mechanical properties. In the present research, impact toughness of a gas tungsten arcwelded AISI 304 stainless steel pipe was evaluated between room and liquid nitrogen (-196˚C) test temperatures.
In addition, a comparative study was made of the fracture behavior of FCC crystal structuredstainless steel weldments and BCC crystal structured mild steels(A-grade and SS400). The results showed aslight decrease in the impact energy of the AISI 304 base metal, heat affected zone(HAZ), and weldedzone with decreasing test temperature. In addition, the welded metal has the highest absorbed impactenergy, followed by HAZ and the base metal.

영어초록

AISI 304 austenitic stainless steel is widely used for LNG pipes for LNG transmission thanks to its goodmetallurgical and mechanical properties. In the present research, impact toughness of a gas tungsten arcwelded AISI 304 stainless steel pipe was evaluated between room and liquid nitrogen (-196˚C) test temperatures.
In addition, a comparative study was made of the fracture behavior of FCC crystal structuredstainless steel weldments and BCC crystal structured mild steels(A-grade and SS400). The results showed aslight decrease in the impact energy of the AISI 304 base metal, heat affected zone(HAZ), and weldedzone with decreasing test temperature. In addition, the welded metal has the highest absorbed impactenergy, followed by HAZ and the base metal.

참고자료

· 없음