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선박 극저온 탱크용 고망간강 소재 맞대기 용접부 기계 물성 분석 연구

원문정보

A Study on Mechanical Properties Analysis of Laser Butt Welds of High Manganese Steel Materials for Vessel Cryogenic Tanks

표창민, 김지선

피인용수 : 0(자료제공 : 네이버학술정보)

초록

영어

As the International Maritime Organization (IMO)'s environmental regulations on ship emissions become strict, the demand for ships powered by Liquefied Natural Gas (LNG) is rapidly increasing worldwide. Compared to other materials, high manganese steel has the advantages of superior impact toughness at cryogenic temperatures, a small coefficient of thermal expansion, and low cost of base materials and welding rods. However, there is a limitation in that the mechanical properties of the filler material are lower than the base material having excellent mechanical properties. In this study, after performing a high manganese steel laser butt welding experiment, the welding performance was evaluated through mechanical property (yield strength, tensile strength, hardness, cryogenic impact strength) tests of the weld. As a result, it was observed that the yield strength and tensile strength of the high manganese steel laser welding part was 97.5% and 93.5% of the base metal respectively. Also the hardness of welding part was 84.2% of the base metal. The cryogenic impact strength of the welding part and the base metal were over the 27J, the level of welding part is 76.1% of the base metal.

목차

ABSTRACT
1. 서론
2. 고망간강 맞대기 용접 실험
3. 고망간강 용접부 기계 물성 분석
4. 결과 및 논의
6. 결론
References

저자정보

  • 표창민 오연택. Korea Institute of Industrial Technology
  • 김지선 Ji-Sun Kim. Korea Institute of Industrial Technology Researcher

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자료제공 : 네이버학술정보

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