Materials selection of liquefied natural gas (LNG) cargo containment systems has influence on the design of structure, safety and cost. As cryogenic temperature metals make up the most in LNG carriers, they are closely related to the design and manufacture. Considering the bearing part and insulation part of containment system, four different metals including invar alloy, 304L stainless steel, Ni9 steel and A5083 aluminum alloy can be taken into account. Thermal conductivity influences the insulation layer's design and welding metallurgy, while low mechanical strength improves the thickness of plate that influences the processing, moving, installation and cost. Material parameters and welding techniques of them are summarized.
林文虎, 华学明, 吴毅雄, 唐永生, 张汇平. 大型液化天然气船围护系统及其低温金属材料焊接技术[J]. 海洋工程装备与技术, 2014, 1(2): 160-165.
Wen-hu LIN, Xue-ming HUA, Yi-xiong WU, Yong-sheng TANG, Hui-ping ZHANG. Reviews of the Cargo Containment Systems of Large Scale LNG Carriers and the Welding of Related Low Temperature Metals. Ocean Engineering Equipment and Technology, 2014, 1(2): 160-165.
Park W S, Chun M S, Han M S, et al.Comparative study on mechanical behavior of low temperature application materials for ships and offshore structures. Part I. Experimental investigations[J]. Materials Science and Engineering A, 2011, 528(18): 5790.
[6]
Yoo C H, Kim K S, Choung J et al. An experimental study on behaviors of IMO Type B CCS materials at room and cryogenic temperatures[C]. ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering, 2011: 241.
[7]
张成俊. 液化天然气贮藏舱用材料[J]. 上海钢研, 1989(5): 66.
[8]
Vinogradov A, Hashimoto S, Kopylov V I.Enhanced strength and fatigue life of ultra-fine grain Fe-36Ni invar alloy[J]. Materials Science and Engineering A, 2003, 355(1): 277.
[9]
Johan P, Guha B, Achar D R G. Fatigue life improvement of AISI 304L cruciform welded joints by cryogenic treatment[J]. Engineering Failure Analysis, 2003, 10(1): 1.
Avery R E, Parsons D.Welding stainless and 9% nickel steel cryogenic vessels[J]. Welding Journal-Including Welding Research Supplement, 1995, 74(11): 45.