低温条件下液化天然气储罐的断裂安全

IF 0.7 4区工程技术 Q4 ENGINEERING, MARINE

International Journal of Maritime Engineering Pub Date : 2023-07-10 DOI:10.5750/ijme.v165ia1.1208

G. An, Jeongung Park, Dae-Jeong Seong, I. Han

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引用次数: 0

摘要

高锰奥氏体钢是一种应用于液化天然气(LNG)储罐和燃料箱的新型低温钢，具有较好的低温断裂韧性和安全性。温度越低，断裂韧性越低;因此，低温钢要求具有较高的断裂韧性，以防止不稳定断裂。本研究对30mm厚高锰奥氏体钢进行了不稳定韧性断裂试验，并评估了其在LNG储罐和燃料箱中的适用性。评估了焊接接头的韧性断裂性能，包括焊缝金属和热影响区。对不同类型LNG储罐的抗不稳定断裂性能进行了评价。研究发现，高锰奥氏体钢具有优异的不稳定断裂特性和良好的低温材料性能;因此，它可以应用于液化天然气储存和燃料箱。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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FRACTURE SAFETY OF LIQUEFIED NATURAL GAS TANK IN CRYOGENIC CONDITIONS

High-manganese austenitic steel has been developed as a new cryogenic steel for application in liquified natural gas (LNG) storage and fuel tanks, with improved fracture toughness and safety at cryogenic temperatures. Generally, the fracture toughness decreases at lower temperatures; therefore, cryogenic steel requires a high fracture toughness to prevent unstable fractures. This study conducted unstable ductile fracture tests with 30-mm-thick high-manganese austenitic steel and evaluated its applicability to LNG storage and fuel tanks. The ductile fracture resistance in the weld joints was evaluated, including the weld metal and heat-affected zone. The unstable fracture resistance was evaluated for different LNG tank types. It was found that high-manganese austenitic steel has excellent unstable fracture characteristics and good material performance as a cryogenic steel; therefore, it can be applied in LNG storage and fuel tanks.

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来源期刊

International Journal of Maritime Engineering ENGINEERING, MARINE-

CiteScore

1.20

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： The International Journal of Maritime Engineering (IJME) provides a forum for the reporting and discussion on technical and scientific issues associated with the design and construction of commercial marine vessels . Contributions in the form of papers and notes, together with discussion on published papers are welcomed.